Preparation of higher order cyano and “non-ate” allyl copper reagents from the reaction of allyl chlorides with a formal copper anion
作者:Douglas E. Stack、Walter R. Klein、Reuben D. Rieke
DOI:10.1016/s0040-4039(00)93380-x
日期:1993.5
through the low temperature reaction of allyl chlorides with a formal copper anion. The copper anion is generated via the low temperature reduction of Cu(I) complexes by two equivalents of lithium naphthalenide and then oxidatively adds to allyl chlorides with minimal homocoupling. These allyl organocopper reagents undergo substitution reactions with alkyl chlorides and epoxides as well as 1,4-conjugate
通过烯丙基氯化物与形式铜阴离子的低温反应,已实现了高阶和“非酸酯化”的烯丙基有机铜试剂的生成。铜阴离子是通过两当量的萘甲酸锂对Cu(I)络合物的低温还原作用而生成的,然后以最小的均偶联度氧化添加到烯丙基氯中。这些烯丙基有机铜试剂与烷基氯化物和环氧化物进行取代反应,并以良好或极好的收率进行1,4-共轭物加成反应。