Lithium norcaranylidenoids. Alkylation and epimerization
作者:Philip M. Warner、Suae-Chen Chang、Nicholas J. Koszewski
DOI:10.1016/s0040-4039(00)98210-8
日期:1985.1
The epimeric 7-bromo-7-lithionorcaranes have been stereospecifically generated; the -bromo isomer is stable at −78°C, while the - bromo isomer is reactive. The stereochemistry of its reaction with nBuLi involves inversion.
差向异构体7-
溴-7-
锂化六烷是立体定向生成的。该
溴异构体是在-78℃下稳定,而-
溴异构体是反应性的。其与nBuLi反应的立体
化学涉及倒位。