Reactions of some alkynyl halides with Samarium(II) iodide
作者:Zhihong Zhou、Denis Larouche、Sharon M. Bennett
DOI:10.1016/0040-4020(95)00703-b
日期:1995.10
Certain alkynyl halides (6-halo-1-ynes) react with samarium(II) iodide (SmI2) to give cyclized products (methylenecyclopentanes) in good yield. We have found some interesting evidence for the presence of radical and unstable organosamarium intermediates in these reductive cyclizations. Methyl 7-halohept-2-ynoates are not. however, good substrates for this cyclization methodology.
A convenient annulation process involving a tandem alkylation-Michael addition sequence
作者:Didier Desmaële、Jean-Marc Louvet
DOI:10.1016/s0040-4039(00)77167-x
日期:1994.4
Malonic esters, beta-keto-ester and other methylene-active compounds react with the 7-iodo-2-heptenoic acid methyl ester 2 in presence of cesium carbonate to give six-membered ring products 5, through a tandem alkylation-Michael addition reaction.
Enders, Dieter; Scherer, Hermann J.; Runsink, Jan, Chemische Berichte, 1993, vol. 126, # 8, p. 1929 - 1944
作者:Enders, Dieter、Scherer, Hermann J.、Runsink, Jan
DOI:——
日期:——
A new access to homoerythrina alkaloids
作者:Marie Anne Le Dreau、Didier Desmaele、Francoise Dumas、Jean d'Angelo
DOI:10.1021/jo00063a004
日期:1993.5
(+)-(R)- and (−)-(S)-Perhexiline maleate: Enantioselective synthesis and functional studies on Schistosoma mansoni larval and adult stages
previously shown to be effective on larval, juvenile, and adult stages of S. mansoni and to impact egg production in vitro. Since PHX is a racemic mixture of R-(+)- and S-(−)-enantiomers, we designed and realized a stereoselective synthesis of both PHX enantiomers and developed an analytical procedure for the direct quantification of the enantiomeric excess also suitable for semipreparative separation