Citations with the tag: GRIGNARD reagents
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- Reaction of 4-aryl-2,6-dichlorobenzo[ e[1,2]oxaphosphinine 2-oxides with organomagnesium compounds as a convenient synthetic approach to ( Z)-dialkyl(aryl)[2-(2-hydroxyaryl)-2-arylethenyl]phosphine oxides.
Tatarinov, D. A.; Mironov, V. F.; Varaksina, E. N.; Konovalov, A. I. // Russian Journal of General Chemistry; Jun2008, Vol. 78 Issue 6, p1287
A letter to the editor is presented regarding the mechanism and products formed by the reaction of 4-aryl-2,6-dichlorobenzo[e][1,2]oxaphosphinine 2-oxides I with organomagnesium reagents (Grignard reagents).
- Grignard reaction.
Tatarinov, D. A.; Mironov, V. F.; Varaksina, E. N.; Konovalov, A. I. // Taber's Cyclopedic Medical Dictionary (2009); 2009, Issue 21, p987
An encyclopedia entry for "Grignard reaction," which refers to a classical organic-chemical process forming carbon-carbon bonds, is presented.
- Cyclomagnesiation of nitrogen-containing 1,2-dienes with grignard compounds catalyzed by CpTiCl.
D'yakonov, V.; Makarov, A.; Makarova, E.; Khalilov, L.; Dzhemilev, U. // Russian Journal of Organic Chemistry; Mar2012, Vol. 48 Issue 3, p349
Cyclomagnesiation of nitrogen-containing 1,2-dienes with Grignard compounds in the presence of activated magnesium and CpTiCl as catalyst afforded 2,5-bis(aminoalkylidene)magnesacyclopentanes in high yield.
- Iron-Catalyzed Cross-Coupling Reaction of Aryl Grignard Reagents with bis(2-bromovinyl)benzenes.
Operamolla, Alessandra; Omar, Omar Hassan; Babudri, Francesco; Vitulli, Michele; Farinola, Gianluca M. // Letters in Organic Chemistry; Oct2009, Vol. 6 Issue 7, p573
Fe(acac)3 has been used as the catalyst in cross-coupling reactions of aryl Grignard reagents with 1,4-bis(2-bromovinyl)benzenes affording bis(2-arylvinyl)benzenes. Effects of alkoxy substituents on both reactants and of the temperature on the reaction outcome are investigated.
- An 'inorganic Grignard reagent' with a Mn-Mg bond.
Operamolla, Alessandra; Omar, Omar Hassan; Babudri, Francesco; Vitulli, Michele; Farinola, Gianluca M. // Chemistry in Australia; Jun2014, p12
The article focuses on the role of a manganese-magnesium chemical bond as an inorganic Grignard reagent and mentions topics like the applications of the reagent in synthesis of chemicals.
- A concise synthesis of azoxystrobin using a Suzuki cross-coupling reaction.
Liu, Yong-Gan; Luo, Yan; Lu, Yao // Journal of Chemical Research; Oct2015, Vol. 39 Issue 10, p586
A simple, efficient and eco-friendly process for the synthesis in good yield of azoxystrobin from 2-bromophenol has been developed using phenolic hydroxyl protection, Grignard reaction, Suzuki cross-coupling, hydrogenation and a nucleophilic reaction on a 2-chloropyrimidine.
- Aryl-Substituted Boron Subphthalocyanines and their Application in Organic Photovoltaics.
Bonnier, Catherine; Josey, David S.; Bender, Timothy P. // Australian Journal of Chemistry; 2015, Vol. 68 Issue 11, p1750
A family of five axial aryl-substituted boron subphthalocyanine (BsubPc) derivatives bearing a hydrido, methyl, methoxy, phenyl, or fluoro substituent at the para position of the aryl were synthesised from Br-BsubPc and the corresponding aryl Grignard reagent in moderate yields. The...
- Synthetic dyes: simple and original ways to 4-substituted flavylium salts and their corresponding vitisin derivatives.
Roehri-Stoeckel, Christine; Gonzalez, Emmanuel; Fougerousse, Andr�; Brouillard, Raymond // Canadian Journal of Chemistry; Jul2001, Vol. 79 Issue 7, p1173
Flavylium salts substituted at the 4-position have been prepared according to a Grignard reaction of some flavones with appropriate alkyl- and aryl-magnesium bromides. Among these compounds, 4-methyl flavylium salts were gently reacted with aromatic aldehydes, affording new anthocyanidin...
- Cluster quantum-chemical study of Grignard reagent formation.
Porsev, V.; Tulub, A. // Doklady Physical Chemistry; Aug2006, Vol. 409 Issue 2, p237
This article discusses the Grignard reaction which is the most widely used reactions in synthetic organic chemistry. It identifies the two-stage process of Grignard formation reaction. The first stage involves the formation of alkylmagnesium halide adsorbed on the magnesium cluster, and the...
- Interaction of (1-phenylethyl)indole-2-carbonitrile with C-nucleophiles.
Golantsov, N.; Karchava, A.; Yurovskaya, M. // Chemistry of Heterocyclic Compounds; Aug2006, Vol. 42 Issue 8, p1021
Methods of obtaining ketones and enamino esters have been developed on the basis of reactions of 1-(1-phenylethyl)indole-2-carbonitrile with organomagnesium and organozinc compounds. Removal of a benzyl group from the indole nitrogen atom by the Grignard reagent has been discovered.
- Allyl Silane Additions to Highly Electrophilic 5,6-Dihydro-2H-1,4-oxazinones.
Shafer, Cynthia M.; Pigza, Julie; Molinski, Tadeusz F. // Letters in Organic Chemistry; Apr2009, Vol. 6 Issue 3, p224
Allylsilane addition to the dihydro-2H-1,4-oxazinones, 1, proceeded in moderate to good yields with transdiastereoselectivity. The yield of addition reactions of 5-phenyl-5,6-dihydro-2H-1,4-oxazin-2-one with allylsilanes is improved over the corresponding additions of Grignard reagents to 1 and...
- Synthesis of 2,4-diarylquinolines: nickel-catalysed ligand-free cross-couplings of 4-chloro-2-arylquinolines with arylmagnesium halides in 2-methyltetrahydrofuran.
Li, Zhenhua; Xu, Lingmin; Su, Weike // Journal of Chemical Research; 2011, Vol. 35 Issue 4, p240
A ligand-free and room temperature protocol for the synthesis of 2,4-diarylquinolines is described. Treatment of 4-chloro-2-arylquinolines with arylmagnesium halides in the presence of a catalytic amount of nickel(II) chloride without ligands in 2-methyltetrahydrofuran (2-MeTHF) afforded the...
- Hexatriene formation from the regiospecific alkene cross-metathesis of trans-1-(buta-1,3-dien-1-yl)-2-acryloyloxynaphthalene.
Gabbutt, Christopher D.; Heron, B. Mark; Kilner, Colin; Kolla, Suresh B. // Journal of Chemical Research; 2011, Vol. 35 Issue 9, p531
Wittig olefination of 2-hydroxy-1-naphthaldehyde with allylidenetriphenylphosphorane afforded trans-1-(buta-1,3-dien-1-yl)-2-naphthol in good yield. Subsequent O-acylation with acryloyl chloride provided the corresponding acrylate ester. Attempts to effect cyclisation of the latter by...
- Nickel-catalyzed C(sp)-C(sp) Cross Coupling Reactions of Sulfur-Functionalities and Grignard Reagents.
Someya, Chika; Weidauer, Maik; Enthaler, Stephan // Catalysis Letters; May2013, Vol. 143 Issue 5, p424
In the present study, the nickel-catalyzed carbon carbon bond formation of a range of sulfur containing substrates with Grignard reagents via desulfurization has been explored. After investigation of different reaction parameters with a well-defined nickel complex an excellent and...
- A Novel and Convenient Method for the Synthesis of Ubiquinone-10.
Wang, Feng; Jiang, Xiangrui; Hu, Lihong; Dong, Shengyi; Wu, Xiumei; Bai, Hua; Zhang, Yongmin; Stöckigt, Joachim; Zhao, Yu // Letters in Organic Chemistry; Aug2006, Vol. 3 Issue 8, p610
A novel and convenient synthetic approach to ubiquinone-10 was reported via the SN2'-type nucleophilic displacement reaction between copper-catalyzed Grignard reagent and the secondary allylic acetate, which was suitable for the large-scale production of ubiquinone-10.
- Synthesis of Some Derivatives of Benzophenothiazinone Of Pharmaceutical Interests Via Nickel Catalysed Grignard Couplings.
Onoabedje, E. A.; Ezema, B. E.; Ezema, C. G.; Ugwu, D. I. // Chemical & Process Engineering Research; 2013, Vol. 8, p6
Some derivatives of 6-chlorobenzo[a]phenothiazin-5-one were synthesized via nickel catalyzed Grignard couplings. The parent compound 6-chlorobenzo[a]phenothiazin-5-one was prepared by refluxing a mixture of 2- aminobenzenethiol and 2,3-dichloro-1,4-napthoquinone in anhydrous potassium acetate in...
- SYNTHESIS OF THE HYDROCHLORIDES OF 1-(4-ETHOXYPHENYL)-1-ALKYL(ARYL)-2-(4'-CHLOROPHENYL)-3-MORPHOLINOPROPAN-1-OLS.
Gevorgyan, G. A. // Electronic Journal of Natural Sciences; Jul2006, Vol. 7 Issue 2, p7
Î±-[4â€²-Chlorophenyl]-Î²-morpholino-4-ethoxypropiophenones have been synthesized by aminomethylation of 4-ethoxyphenyl-4â€²-chlorobenzylketones with paraformaldehyde and morpholine. 1-(4-Ethoxyphenyl)-1-alkyl(aryl)-2-(4â€²-chlorophenyl)-3-morpholinopropanols were synthesized by...
- Synthesis by Ring-Closing Metathesis and Cytotoxic Evaluation of Novel Thienylmacrolactones.
Krauss, Jürgen; Köbler, Daniela; Miller, Verena; Bracher, Franz // Scientia Pharmaceutica; Mar2012, Vol. 80 Issue 1, p29
This paper describes the synthesis and biological evaluation of macrolactones containing a thienyl substituent as simple analogues of epothilones. The compounds were prepared in a brief and efficient manner from thiophene-2- carbaldehyde using a ring-closing metathesis with Grubbs I or Grubbs II...
- Copper-catalyzed cross-coupling of ( Z)-allyl phenyl ethers with Grignard compounds in the synthesis of insect pheromones.
Petrushkina, E. A.; Kalinin, V. N. // Russian Journal of General Chemistry; Oct2008, Vol. 78 Issue 10, p1897
(8 Z)-Dodec-8-en-1-yl acetate (pheromone of oriental fruit moth Grapholita molesta) and (9 Z)-dodec-9-en-1-yl acetate (pheromone of grape berry moth Paralobesia viteana) containing impurities of isomeric structures were synthesized via copper-catalyzed cross-coupling of ( Z)-1-phenoxyhex-2-ene...
- Synthesis of 2-hydroxy-5-methyl-3-hexanone.
Tian, Hong-Yu; Ye, Hong-Lin; Sun, Bao-Guo; Wang, Ya-Ling // Journal of Chemical Research; 2011, Vol. 35 Issue 1, p51
2-Hydroxy-5-methyl-3-hexanone, which is a characteristic component of eucalyptus honeys, was synthesised by oxidation of the silyl enol ether of 5-methyl-3-hexanone. 5-Methyl-3-hexanone was prepared by Grignard reaction and oxidation starting from isovaleraldehyde and ethylmagnesium bromide. The...
- Synthesis of [9,10-Dihydro-9-(2-methylaminoethyl)-9,10-propanoanthracene].
Al-Saeedi, Adel; Karama, Usama; Farooqui, Mazahar // Asian Journal of Research in Chemistry; Dec2012, Vol. 5 Issue 12, p1460
Reaction of anthrone R1 with Grignard reagent to give 9-substituted anthracene R2 which treatment with Î±-bromoacroline to give R3. Reaction of R3 with 1M NaOH resulted in transformation into the ring expanded Î±-hydroxy ketone R4. Transformation of Î±-hydroxy ketone by using samarium...
- Stereoselective synthesis of allylamines by iron-catalyzed cross-coupling of 3-chloroprop-2-en-1-amines with grignard reagents. Synthesis of naftifine.
Shakhmaev, R.; Sunagatullina, A.; Zorin, V. // Russian Journal of Organic Chemistry; Mar2014, Vol. 50 Issue 3, p322
A general procedure for the synthesis of trans- and cis-allylamines has been developed on the basis of iron-catalyzed cross-coupling of Grignard reagents with stereochemically pure 3-chloroprop-2-en-1-amines prepared by allylation of amines with commercially available 1,3-dichloropropene isomers.
- Stereospecific Grignard reactions of cholesteryl 1-alkenesulfinate esters: Application of the Andersen Protocol to the preparation of non-racemic Î±,Î²-unsaturated sulfoxides.
Strickler, Rick R; Motto, John M; Humber, Craig C; Schwan, Adrian L // Canadian Journal of Chemistry; Jun2003, Vol. 81 Issue 6, p423
Enantiomerically enriched Î±,Î²-unsaturated sulfinate esters of (â€“)-cholesterol undergo stereospecific substitutions at sulfur when treated in benzene at 6Â°C with Grignard reagents. Sulfoxides with ees of 85â€“99.5% are obtained when enantiopure sulfinates are used. The...
- The homocoupling of arylsulfonylhydrazides by palladium-catalysed desulfonation in air.
Zhang, Wei; Zhao, Baoli; Li, Ke // Journal of Chemical Research; Nov2013, Vol. 37 Issue 11, p674
A simple and efficient preparation of biaryl derivatives from arylsulfonyl hydrazides has been developed using Pd(OAc)2 as the catalyst in a mixed solvent of DMA and THF and without the use of any ligand and base.
- Simple and Convenient Synthesis of (Â±)-Bakuchiol.
Hongli Chen; Yuanchao Li // Letters in Organic Chemistry; Sep2008, Vol. 5 Issue 6, p467
A simple and convenient synthesis of (Â±)-bakuchiol has been developed. The key intermediate was obtained in only one step from the easily available starting material, citral, by an 1,4-addition procedure. (Â±)-Bakuchiol was finally produced in 4 steps to give 50% overall yield.
- Synthesis of 3-aryl-2-[hydroxy(diaryl)methyl]-4-oxo-3,4-dihydroquinazolines.
Shemchuk, L. A.; Chernykh, V. P.; Levashov, D. V.; Sytnik, K. M. // Russian Journal of Organic Chemistry; Nov2010, Vol. 46 Issue 11, p1687
By heating arylamides of N-ethoxalylanthranilic acid in the acetic acid mediun in the presence of triethylamine the corresponding ethyl 3-aryl-4-oxo-3,4-dihydroquinazoline-2-carboxylates were obtained. The latter in the conditions of the Grignard reaction formed...
- Functionalized Î±-bromocyclopropylmagnesium bromides: Generation and some reactions.
Bolesov, I. G.; Solov’eva, V. A.; Baird, M. S. // Russian Journal of Organic Chemistry; Nov2013, Vol. 49 Issue 11, p1580
Functional derivatives of gem-dibromocyclopropanes (ethers and esters of gemdibromocyclopropylmethanol, 2,2-dibromocyclopropanecarboxylic acids and their esters) undergo partial hydrodebromination at the treatment with isopropyl magnesium bromide (3â€“6 mol-equiv) in THF and then in...
- Synthesis and Leishmanicidal Evaluation of Novel 4-Substituted-2,2-Dimethyl-7-(prop-2-ynyloxy)Chromenes.
Alizadeh, Babak H.; Foroumadi, Alireza; Ardestani, Sussan K.; Poorrajab, Fatemeh; Shafiee, Abass // Turkish Journal of Chemistry; 2009, Vol. 33 Issue 1, p47
Substituted 4-chromenes were synthesized via the Grignard coupling reaction of various substituted phenyl- and benzylmagnesium chlorides with 2,2-dimethyl-7-(prop-2-ynyloxy)chroman-4-one (1) in relatively good yield (60%-85%). The benzylic-substituted derivatives were a mixture of 2 exo and endo...
- The addition of organometallic reagents to tetramesityldigermene.
Fujdala, Kyle L; Gracey, David W.K; Wong, Erica F; Baines, Kim M // Canadian Journal of Chemistry; Nov2002, Vol. 80 Issue 11, p1387
The thermolysis and photolysis of hexamesitylcyclotrigermane in the presence of ethylmagnesium bromide has been investigated. Under photochemical conditions, ethyldimesitylgermane, 1,2-diethyl-1,1,2-trimesityldigermane and ethyl-1,1,2,2-tetramesityldigermane were isolated and, under thermal...
- Synthesis of Substituted 3,4-Dialkyl-2,6-Diaryl-Piperidin-4-ol Derivatives and Their Conformational Study.
Maruthavanan, T.; Venkatesan, P. // E-Journal of Chemistry; 2012, Vol. 9 Issue 2, p1029
The synthesis of series of 3,4-dialkyl-2,6-diaryl-piperidin-4-ol derivatives (7-12) by reduction of cis-3-alkyl-2,6-diarylpiperidin-4-one (1-6) using Grignard reagent has been reported. The synthesized heterocycles have been characterized on basis of spectroscopic data and their conformation has...
- A new approach to the synthesis of ethyl (4 E)-alkenoates.
Shakhmaev, R.; Sunagatullina, A.; Zorin, V. // Russian Journal of General Chemistry; Nov2013, Vol. 83 Issue 11, p2018
A new approach to the preparation of ethyl (4 E)-alkenoates was developed on the basis of Fe-catalyzed cross-coupling of ethyl (4 E)-5-chloropent-4-enoate with the Grignard reagents. The starting ethyl (4 E)-5-chloropent-4-enoate was obtained by alkylation of malonic ester of (...
- Catalyst-Controlled Site-Selectivity Switching in Pd-Catalyzed Cross-Coupling of Dihaloarenes.
Manabe, Kei; Yamaguchi, Miyuki // Catalysts (2073-4344); Sep2014, Vol. 4 Issue 3, p307
Pd-catalyzed, site-selective mono-cross-coupling of substrates with two identical halo groups is a useful method for synthesizing substituted monohalogenated arenes. Such arenes constitute an important class of compounds, which are commonly identified as drug components and synthetic...
- Synthesis and Biological Evaluation of Novel Alkyl-Imidazolyl Carbinols and their Esters: Potent Antimycotics.
KRAUSS, Jürgen; GRATZL, Carina; STURM, Verena; MÜLLER, Christoph; STAUDACHER, Verena; SCHMIDT, Christoph Q.; BRACHER, Franz // Scientia Pharmaceutica; 2013, Vol. 81 Issue 3, p641
A novel series of imidazol-5-yl carbinols and their 4-chlorobenzoyl esters has been synthesized by the Grignard reaction and subsequent esterification. These compounds were screened for their antimicrobial activities in an agar diffusion assay. The compounds with C10 to C12-alkyl side chains...
- Design, synthesis and characterization of 3-alkyl substituted chlorin derivatives.
Bing Cun Cui; Xin Yu; Dong Mei Ni; Yuan Dong Lu; Il Yoon; Young Key Shim // Journal of Chemical & Pharmaceutical Research; 2013, Vol. 5 Issue 12, p776
The novel 3-alkyl substituted chlorin derivatives exhibiting good lipophilicity were obtained from methyl pheophorbide-a by modification of the peripheral functional groups. The vinyl group at 3-position was oxidized with OsO4 and NaIO4 to form the formyl group and the Grignard reaction of this...
- Effects of water content on magnesium deposition from a Grignard reagent-based tetrahydrofuran electrolyte.
Yagi, Shunsuke; Tanaka, Akira; Ichikawa, Yuya; Ichitsubo, Tetsu; Matsubara, Eiichiro // Research on Chemical Intermediates; Jan2014, Vol. 40 Issue 1, p3
It is well known that water causes decomposition of Grignard reagents. When these reagents are used, water or moisture should be eliminated. However, it is possible that a very small amount of water, for example, trapped in the walls of the glassware used, can enter the system even in a...
- Synthesis of 3-(4-bromophenyl)-1-morpholino-2-phenylalkan-3-ol hydrochlorides.
Isakhanyan, A. U.; Gevorgyan, G. A.; Panosyan, G. A. // Russian Journal of Organic Chemistry; Aug2008, Vol. 44 Issue 8, p1161
Reactions of 1-(4-bromophenyl)-3-morpholino-2-phenylpropan-1-one with various Grignard compounds in diethyl ether gave a broad series of tertiary amino alcohols, 3-(4-bromophenyl)-1-morpholino-2-phenylalkan-3-ol hydrochlorides, that can be regarded as Trihexyphenidyl analogs.
- Grignard Metathesis Polymerization and Properties of 1,1-Disubstituted-2,5-dibromo-3,4-diphenylsiloles.
Young Tae Park // Bulletin of the Korean Chemical Society; 2014, Vol. 35 Issue 6, p1825
Grignard metathesis polymerizations of 1,1-disubstituted-2,5-dibromo-3,4-diphenylsiloles such as 1,1- dimethyl-2,5-dibromo-3,4-diphenylsilole, 1,1-diethyl-2,5-dibromo-3,4-diphenylsilole, 1,1-diisopropyl-2,5-dibromo- 3,4-diphenylsilole, and 1,1-dihexyl-2,5-dibromo-3,4-diphenylsilole were...
- Nitropyridines: III. Synthesis of meta-terphenyls by recyclization of nitropyridinium salts.
Sagitullina, G. P.; Glidzinskaya, L. V.; Sagitullin, R. S. // Russian Journal of Organic Chemistry; Aug2006, Vol. 42 Issue 8, p1203
A two-component Hantzsch synthesis was applied to preparation of nitropyridines and their quaternary salts from various enamines and chalcones based on nitroacetophenone. The recyclization of nitropyridinium quaternary salts under the treatment with an aqueous-alcoholic alkali led to preparation...
- Starting small-scale Grignard reactions.
Hodges, Ray // Chemistry in Australia; Feb2012, Vol. 79 Issue 1, p30
The article discusses small-scale Grignard reactions, wherein all reagents are dry and the approach includes elaborate methods for keeping all components free of water. In a typical exercise, the Grignard reagent is made by dissolving 2.5 grams of magnesium turnings in a solution of bromobenzene...
- Addition of CFCl3 to Aromatic Aldehydes via in Situ Grignard Reaction.
Barkakaty, Balaka; Talukdar, Bandana; Lokitz, Bradley S. // Molecules; Aug2015, Vol. 20 Issue 8, p15098
Synthetic modification of trichlorofluoromethane (CFCl3) to non-volatile and useful fluorinated precursors is a cost-effective and an environmentally benign strategy for the safe consumption/destruction of the ozone depleting potential of the reagent. In this report, we present a novel method...
- Preparation and Reaction Chemistry of Novel Silicon-Substituted 1,3-Dienes.
Choudhury, Partha P.; Welker, Mark E. // Molecules; Sep2015, Vol. 20 Issue 9, p16892
2-Silicon-substituted 1,3-dienes containing non transferrable groups known to promote transmetallation were prepared by Grignard chemistry and enyne metathesis. These dienes participated in one pot metathesis/Diels-Alder reactions in regio- and diastereoselective fashions. Electron-rich alkenes...
- Acridine Synthesis by the Reaction of 2-(Perfluoroalkyl) aniline with ortho-Alkyl-Substituted Aromatic Grignard Reagent: Mechanistic Studies.
Strekowski, Lucjan; Zhang, Jianguo; Saczewski, Jaroslaw; WolińskaD, Ewa // Australian Journal of Chemistry; 2015, Vol. 68 Issue 2, p196
The reaction of 2-(perfluoroethyl)aniline and its higher perfluoroalkyl analogues with an arylmagnesium bromide substituted with a methyl or ethyl group at the ortho position furnishes an acridine containing a shorter perfluoroalkyl group at the 9-position and devoid of the methyl or ethyl group...
- On direct iron-catalyzed cross-coupling reactions.
Czaplik, Waldemar Maximilian; Mayer, Matthias; Grupe, Sabine; von Wangelin, Axel Jacobi // Pure & Applied Chemistry; Jul2010, Vol. 82 Issue 7, p1545
A new methodology for the direct cross-coupling reaction between aryl halides and alkyl halides under iron catalysis is described. Unlike conventional protocols, the direct cross-coupling obviates the need for the preformation of stoichiometric amounts of Grignard species and thus exhibits a...
- Hybrid system for rechargeable magnesium battery with high energy density.
Chang, Zheng; Wu, Yuping; Yang, Yaqiong; Wang, Xiaowei; Li, Minxia; Fu, Zhengwen; Holze, Rudolf // Scientific Reports; 7/17/2015, p11931
One of the main challenges of electrical energy storage (EES) is the development of environmentally friendly battery systems with high safety and high energy density. Rechargeable Mg batteries have been long considered as one highly promising system due to the use of low cost and dendrite-free...
- Diastereoselective addition of Grignard reagents to Î±-epoxy N-sulfonyl hydrazones.
Uteuliyev, Maulen M.; Nguyen, Thien T.; Coltart, Don M. // Nature Chemistry; Dec2015, Vol. 7 Issue 12, p1024
The Î±-alkylation of ketones and their derivatives by the addition of their corresponding enolates to alkyl halides is a fundamental synthetic transformation, but its utility is limited because the key bond-forming step proceeds in a bimolecular nucleophilic substitution fashion. Here we...
- Grignard reaction.
Uteuliyev, Maulen M.; Nguyen, Thien T.; Coltart, Don M. // Taber's Cyclopedic Medical Dictionary; 2005, p910
A definition of the medical term "Grignard reaction" is presented. Grignard reaction refers to a classical organic-chemical process that forms carbon-carbon bonds. It is used to build carbon chains in compounds including drugs, food additives, toxins, and pesticides. The definition is from the...
- Letters in Organic Chemistry [ Rapid Access to Enantiomerically Pure 3,6-Anhydro-2-deoxy-7-phenylglyconolactones. Synthesis of Diastereoisomers of (+)-Goniofufurone ].
Sartillo-Mel�ndez, Cristhian; Cruz-Gregorio, Silvano; Quintero, Leticia; Sartillo-Piscil, Fernando // Letters in Organic Chemistry; Jul2006, Vol. 3 Issue 7, p504
3,4-Anhydro-2-deoxy-7-phenylglyconolactones were synthesized in six steps from diacetone-Dglucose. Construction of the cis-fused bicyclic systems of the corresponding 3,4-anhydro-2-deoxy-7- phenylglycolactones was achieved by a stereoselective substitution reaction at the anomeric position of...
- Synthesis and antioxidant activity of 1-(4-fluorophenyl)-1-alkyl-2-phenyl-3-morpholinopropan-1-ol hydrochlorides.
Isakhanyan, A.; Gevorgyan, G.; Akopyan, N.; Malakyan, M.; Vardevanyan, L.; Badjinyan, S.; Panosyan, G. // Pharmaceutical Chemistry Journal; Jun2011, Vol. 45 Issue 3, p144
Reactions of 4-fluorophenyl-Î²-morpholinopropiophenones with various Grignard reagents in anhydrous ether produced new tertiary aminoalcohols, 1-(4-fluorophenyl)-1-alkyl-2-phenyl-3-morpholinopropan-1-ols, that can be regarded as trihexyphenidyl (cyclodol) analogs. The antioxidant properties of...
- Synthesis of a chiral Î²-amino acid derivative by a cobalt-catalysed coupling reaction.
Pan, Xianhua; Yu, Wansheng; Ou, Wenhua; Tao, Xiaohu; Wan, Jiaomei; Liu, Feng // Journal of Chemical Research; 2011, Vol. 35 Issue 9, p545
A chiral Î²-amino acid derivative was synthesised by a cobalt-catalysed alkylation of 2,4,5-trifluorophenyl magnesium bromide with the alkyl halide derivative of L-aspartic acid, using an efficient catalytic reagent: CoCl2/TMEDA. The halide derivative was synthesised from protected L-aspartic...
- The Meyers Reaction (1994-2010).
Mortier, Jacques // Current Organic Chemistry; Jul2011, Vol. 15 Issue 14, p2413
No abstract available.