The chemo- and enantioselective cyclopropanation of polyenes: chiral auxiliary vs chiral reagent-based approach
作者:AndréB. Charette、Hélène Juteau、Hélène Lebel、Denis Deschênes
DOI:10.1016/0040-4039(96)01798-4
日期:1996.10
The chemo- and enantioselective cyclopropanation of allylic alcohols containing additional olefins was investigated using the dioxaborolane-derived reagent. High chemo- and enantioselectivities were usually observed if a mixture of the chiral dioxaborolane ligand/allylic alcohol was treated with a solution of Zn(CH2I)2·DME complex.
使用衍生自二氧杂
硼烷的试剂研究了含有其他烯烃的烯丙基醇的
化学和对映选择性
环丙烷化。如果将手性二氧杂
硼烷配体/
烯丙醇的混合物用Zn(CH 2 I)2 ·
DME络合物溶液处理,通常观察到较高的
化学和对映选择性。