Highly Regioselective Hydrosilylation of Unsymmetric Alkynes Using a Phenylthio Directing Group
作者:Kuan-Hsun Huang、Minoru Isobe
DOI:10.1002/ejoc.201402577
日期:2014.8
Cobalt-assisted hydrosilylation of acetylenes is particularly interesting in organic synthesis since alkynyl group functionalization can give way to more useful substructures. This study aims to answer the general question of how to control hydrosilylationregioselectivity with unsymmetric alkynyl groups. Cobalt-catalyzed hydrosilylation is highlyregioselective with alkyl-phenylthio-acetylenes affording
Studies on the synthesis of highly substituted furans: The synthesis of calicogorgins A and C
作者:David I. MaGee、James D. Leach、Tammy C. Mallais
DOI:10.1016/s0040-4039(97)00074-9
日期:1997.2
A short and highly efficient synthesis of calicogorgin A and C has been accomplished. The key features include a rapid assembly of the furanyl moieties, a sulfonyl anion alkylation to join the two halves and a bis-reductive desulfurization. (C) 1997 Elsevier Science Ltd.