Rhenium-Catalyzed 1,3-Isomerization of Allylic Alcohols: Scope and Chirality Transfer
作者:Christie Morrill、Gregory L. Beutner、Robert H. Grubbs
DOI:10.1021/jo061436l
日期:2006.9.1
The scope of the triphenylsilyl perrhennate (O3ReOSiPh3, 1) catalyzed 1,3-isomerization of allylic alcohols has been thoroughly explored. It was found to be effective for a wide variety of secondary and tertiary allylic alcohol substrates bearing aryl, alkyl, and cyano substituents. Two general reaction types were found which gave high levels of product selectivity: those driven by formation of an
的三苯基perrhennate的(范围ø 3 ReOSiPh 3,1)催化的烯丙基醇的1,3-异构化已得到彻底探索。已发现对于具有芳基,烷基和氰基取代基的多种仲和叔烯丙基醇底物是有效的。发现了两种提供高水平产物选择性的常规反应类型:那些是通过形成扩展的共轭体系驱动的,以及是由特定异构体的选择性甲硅烷基化驱动的。研究了在各种底物上的手性转移效率,并发现了可以形成高对映选择性的仲和叔烯丙基醇的条件。考虑到围绕烯丙基系统周围的取代基的性质的选择性趋势表明,这是用于烯丙基醇合成的可靠且可预测的方法。