Carbenoid Chain Reactions: Substitutions by Organolithium Compounds at Unactivated 1-Chloro-1-alkenes
作者:Rudolf Knorr、Claudio Pires、Claudia Behringer、Thomas Menke、Johannes Freudenreich、Eva C. Rossmann、Petra Böhrer
DOI:10.1021/ja0649116
日期:2006.11.1
chain cycle consists of the following two steps: (i) A fast vinylic substitution reaction of these RLi at carbenoid 6 (step 2) with formation of the chain carrier Alk(2)C=CLi-R (8), and (ii) a rate-limiting transfer of atom A (step 3) from reagent 2 to the chain carrier 8 with formation of the product Alk(2)C=CA-R (4) and with regeneration of carbenoid 6. This chain propagation step 3 was sufficiently