New methods for synthesis of. ALPHA.,. BETA.-unsaturated carboxylic esters from carbonyl compounds using monoanions of dithiocarbonates, and dianions of ethyl …

K Tanaka, N Yamagishi, R Tanikaga…

Index: Tanaka,K. et al. Bulletin of the Chemical Society of Japan, 1979 , vol. 52, p. 3619 - 3625

Full Text: HTML

Citation Number: 50

Abstract

The lithium enolates of O-alkyl S-alkoxycarbonylmethyl dithiocarbonates and monothiocarbonates were found to be efficient reagents for the synthesis of α, β-unsaturated esters from carbonyl compounds by single-step procedure. The dianions of ethyl mercaptoacetate and ethyl 2-mercaptopropionate were successfully generated by treatment with 2.2 equivalents of lithium diisopropylamide (LDA) in the presence of N, N, N′, N′- ...

Related Articles:

Modified Wittig Reactions Using Triethylamine and Lithium Halides: Synthesis of α, β-Unsaturated Esters from Ketones and Ethyl Bis (Trifluoroethyl) …

[Rathke, Michael W.; Bouhlel, Ezzeddine Synthetic Communications, 1990 , vol. 20, # 6 p. 869 - 875]

Chemistry of acetylenic ethers 84: Addition of aldehydes, ketones, esters and amides to 1??alkynyl ethers under the influence of Lewis acids; direct formation of α, β?? …

[Vieregge,H. et al. Recueil des Travaux Chimiques des Pays-Bas, 1966 , vol. 85, p. 929 - 951]

Mechanism of reactions of unsaturated ethers and thioethers IV: Acid catalyzed rearrangement of ethoxyethynyl??and ethylthioethynyl??carbinols

[Hekkert,G.L.; Drenth,W. Recueil des Travaux Chimiques des Pays-Bas, 1961 , vol. 80, p. 1285 - 1304]

Functionalisation of saturated hydrocarbons. part x. 1 a comparative study of chemical and electrochemical processes (gif and gif-orsay systems) in pyridine in …

[Belavoine, Gilbert; Barton, Derek H. R.; Boivin, Jean; Gref, Aurore; Coupanec, Pascale Le; et al. Tetrahedron, 1988 , vol. 44, # 4 p. 1091 - 1106]

More Articles...