Reaction of non-activated olefins with CH-acids; a novel method for the preparation of electrophilic cyclopropanes
作者:László Tóke、Gábor T Szabó、Zoltán Hell、Gábor Tóth
DOI:10.1016/s0040-4039(00)88529-9
日期:1990.1
Reaction of non-activated olefines with active methylene compounds was accomplished under solid-liquid phase-transfer conditions, in the presence of iodine, to give electrophiliccyclopropanes of a wide range of substituents. Several data to the mechanism of the reaction are also given.
Stereoselective Gold(I) Domino Catalysis of Allylic Isomerization and Olefin Cyclopropanation: Mechanistic Studies
作者:Sebastian Klimczyk、Xueliang Huang、Hanspeter Kählig、Luís F. Veiros、Nuno Maulide
DOI:10.1021/acs.joc.5b00666
日期:2015.6.5
Gold(I) catalysis of olefin activation is still a rare feature in the repertoire of that metal. Mechanistic studies on the gold(I)-catalyzedcyclopropanation of allyl-substituted sulfonium ylides, including kinetic analysis as well as detailed computational studies, reveal that the reaction proceeds through activation of the alkene moiety. Furthermore, a novel competitive allylic isomerization pathway
Single electron transfer induced elemental steps in the transformation of iodomalonic esters and related CH-acids under solid-liquid PTC conditions. Preparation of electrophilic cyclopropanes
作者:László Tőke、Zoltán Hell、Gábor T. Szabó、Gábor Tóth、Mária Bihari、Antal Rockenbauer
DOI:10.1016/s0040-4020(01)81878-0
日期:1993.6.4
Single electron transfer induced elemental steps have been shown to occur during the transformation of iodomalonic esters and related CH-acids to cyclopropane derivatives undersolid-liquid phase transfer catalytic conditions. The iodo derivatives are formed from iodine and CH-acids “in situ”, in the same pot in which the transformations to cyclopropane derivatives take place. A number of electrophilic