作者:Nandeo Choony、Nikolai Kuhnert、Peter G. Sammes、Graham Smith、Robert W. Ward
DOI:10.1039/b204778k
日期:2002.8.23
Steric buttressing, using the removable trityl group as a protecting group for substituted allylamines, is used to effect selective cycloadditions and uncatalysed enereactions under remarkably mild conditions.
Steric acceleration of an uncatalysed ene reaction at room temperature
作者:Nandeo Choony、Peter G. Sammes、Graham Smith、Robert W. Ward
DOI:10.1039/b106669m
日期:2001.10.11
The bulky trityl steric buttress is used to effect an intramolecular, uncatalysed enereaction that operates at roomtemperature, whilst smaller buttresses require heat.