作者:George J. Gordon、Tim Luker、Mark W. Tuckett、Richard J. Whitby
DOI:10.1016/s0040-4020(99)01094-7
日期:2000.4
lithium chloroallylides (allyl carbenoids) into a wide variety of unsymmetrical zirconacycles has been determined. In all but one case a single regioisomer was obtained. A combination of steric and electronic effects is needed to explain the results and imply that the carbenoid is acting predominantly as an electrophilic species. The first carbenoid insertion into a zirconacyclopentadiene is noted.
已经确定了将氯代烯丙基锂(烯丙基类胡萝卜素)插入各种各样的不对称氧化锆环中的区域选择性。除一种情况外,在所有情况下均获得单一的区域异构体。需要结合空间和电子效应来解释结果,并暗示类胡萝卜素主要起亲电物质的作用。注意到第一次类胡萝卜素插入到氧化锆环戊二烯中。