Co-catalyzed autoxidation of alkene in the presence of silane. The effect of the structure of silanes on the efficiency of the reaction and on the product distribution
作者:Jin-Ming Wu、Shigeki Kunikawa、Takahiro Tokuyasu、Araki Masuyama、Masatomo Nojima、Hye-Sook Kim、Yusuke Wataya
DOI:10.1016/j.tet.2005.08.025
日期:2005.10
A systematic investigation of the structural effect of silanes on the Co-catalyzed reductive oxygenation of alkene in the presence of silane (Mukaiyama-Isayama reaction) showed that the efficiency of the reaction decreases with the increase of the steric bulk of the silanes. A similar trend was observed for the metal-exchange reaction between Co(III)-alkylperoxo complex and silane, too. The peroxidation of (S)-limonene, followed by deprotection of the derived silyl peroxides, provides a mixture of the corresponding monocyclic hydroperoxide 24 and the bicyclic one 25, the ratio being a marked function of the steric bulk of silanes. (c) 2005 Elsevier Ltd. All rights reserved.