Synthesis of polyfunctional aliphatic carbonyl compounds under phase-transfer conditions
摘要:
We have studied mono- and dialkylation of malonic, acetoacetic, and cyanoacetic esters with esters of haloacetic and beta-halopropionic acids and addition of the CH acids mentioned and their analogs to methyl and ethyl acrylate under phase-transfer catalysis conditions, and also deethoxycarbonylation of the obtained products. We have demonstrated for the first time the possibility of Dieckmann cyclization under phase-transfer catalysis conditions and have developed a simple method for the synthesis of 2,3-di(ethoxycarbonyl)cyclopentanone, a key intermediate in the syntheis of deoxyprostaglandins, by cyclization of triethyl 1,2,4-butanetricarboxylate.
Henecka,H. et al., Angewandte Chemie, 1960, vol. 72, p. 960 - 963
作者:Henecka,H. et al.
DOI:——
日期:——
SIZOV, A. YU.;DOMBROVSKIJ, V. A.;YANOVSKAYA, L. A., IZV. AN CCCP. CEP. XIM.,(1991) N, S. 1073-1079
作者:SIZOV, A. YU.、DOMBROVSKIJ, V. A.、YANOVSKAYA, L. A.
DOI:——
日期:——
US8466297B2
申请人:——
公开号:US8466297B2
公开(公告)日:2013-06-18
Synthesis of polyfunctional aliphatic carbonyl compounds under phase-transfer conditions
作者:A. Yu. Sizov、V. A. Dombrovskii、L. A. Yanovskaya
DOI:10.1007/bf00961357
日期:1991.5
We have studied mono- and dialkylation of malonic, acetoacetic, and cyanoacetic esters with esters of haloacetic and beta-halopropionic acids and addition of the CH acids mentioned and their analogs to methyl and ethyl acrylate under phase-transfer catalysis conditions, and also deethoxycarbonylation of the obtained products. We have demonstrated for the first time the possibility of Dieckmann cyclization under phase-transfer catalysis conditions and have developed a simple method for the synthesis of 2,3-di(ethoxycarbonyl)cyclopentanone, a key intermediate in the syntheis of deoxyprostaglandins, by cyclization of triethyl 1,2,4-butanetricarboxylate.
[EN] MANUFACTURING PROCESS FOR (S)-PREGABALIN<br/>[FR] PROCÉDÉ DE FABRICATION DE LA (S)-PRÉGABALINE
申请人:DRUG PROCESS LICENSING ASS LLC
公开号:WO2012059830A1
公开(公告)日:2012-05-10
The present invention relates to a novel manufacturing process and novel intermediates useful in the synthesis of pharmaceutically active compounds of general formula (I) used for treatment of epilepsy, neuropathic pain, anxiety and social phobia. The invention describes preparation of enantiomerically pure (S)-Pregabalin from chiral pyrrolidin-2-one of formula (IV).