S N? reactions on some cyclopentene derivatives employing simple nucleophiles and organocuprate reagents
作者:Christopher B. Chapleo、Mark A. W. Finch、Stanley M. Roberts、Geoffrey T. Woolley、Roger F. Newton、David W. Selby
DOI:10.1039/p19800001847
日期:——
bromide (4) reacts with the same nucleophile to give the products of SN2 and SN2′syn-reactions. The lactones (1), (4), (15), and (16) react with lithium dibutylcuprate in the SN′ anti-fashion predominantly, while the esters (9) and (11) react via the SN′syn-mode preferentially. Mechanisms are presented to explain the substitution patterns observed for the cuprate reactions.