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