Conformational Preference and Remote (1,10) Stereocontrol in Biphenyl-2,2‘-dicarboxamides
作者:Jonathan Clayden、Andrew Lund、Latifa H. Youssef
DOI:10.1021/ol0167457
日期:2001.12.1
centrosymmetric epimers by heating. The stereoselectivity of the double lithiation-quench reaction is determined by the stereochemistry of the intermediate doubly lithiated species 2, either diastereoisomer of which may be formed stereospecfically from the corresponding atropisomeric dibromo compounds.[reaction: see text]