作者:Takashi Takahashi、Mohammad Nisar、Katauya Shimizu、Jiro Tsuji
DOI:10.1016/s0040-4039(00)85144-8
日期:1986.1
Diastereoselective methylation of the enolates derived by the Michael addition to 2-alkylcyclopentenones 4, 7 gave the unexpected products 5, 8, and 10 formed by the cis attack of electrophiles from a hindered side as the major isomers.
通过迈克尔加成到2- alkylcyclopentenones衍生的烯醇化物的非对映选择性甲基化4,7,得到意想不到的产品5,8,和10通过从受阻侧亲电子的顺式攻击作为主要异构体形成的。