Indium-mediated allylation reactions of α-chlorocarbonyl compounds and preparation of allylic epoxides
作者:Jeong Ah Shin、Kyung Il Choi、Ae Nim Pae、Hun Yeong Koh、Han-Young Kang、Yong Seo Cho
DOI:10.1039/b101111l
日期:——
Indium-mediatedallylation of α-chlorocarbonyl compounds with various allyl bromides in aqueousmedia gave the corresponding homoallylic chlorohydrins, which could be transformed into the corresponding epoxides in the presence of a base. These reactions were strongly dependent upon both the substituents at the carbon bearing chlorine and the allyl bromides used.
Sequential Hydrozirconation/Cyclization of Dienes, a New Route toward <i>Trans</i> 2-Substituted Vinylcyclopentanes
作者:Sébastien Clergue、Jean-Luc Vasse
DOI:10.1021/ol500400s
日期:2014.3.7
The diastereoselective synthesis of trans-2-substituted vinylcyclopentanes is described. The method is based on the intramolecular coupling of 7-methoxy-1,5-dienes involving a sequential activation of the C═C double bonds via hydrozirconation and TMSOTf-promoted allylation.