Allylic tin(IV)-tin(II) chloride-acetonitrile as a novel system for allylation of carbonyls or imines
作者:Makoto Yasuda、Yoshihiro Sugawa、Akihiro Yamamoto、Ikuya Shibata、Akio Baba
DOI:10.1016/0040-4039(96)01285-3
日期:1996.8
Effective allylation of aldehydes, ketones and imines was accomplished by allylic tributyltins 1 in the presence of SnCl2 in an acetonitrile solution. In this reaction system. Sn(IV)Sn(II) transmetallation must play a key role, generating the allylic tin(II) reagents as a novel reacting species. Acetonitrile effectively promoted the transmetallation to give anti-adducts in the reaction with cinnamyltin
醛,酮和亚胺的有效烯丙基化是通过在乙腈溶液中存在SnCl 2的情况下,通过烯丙基三丁基锡1来实现的。在这个反应体系中。Sn(IV)Sn(II)的金属转移作用必须发挥关键作用,生成烯丙基锡(II)试剂作为一种新型反应物种。乙腈在与肉桂酸锡1c的反应中有效地促进了金属转移,产生了反加合物,而二氯甲烷则干扰了金属转移生成了顺式加合物。