Substituted Diarylmethylamines by Stereospecific Intramolecular Electrophilic Arylation of Lithiated Ureas
作者:Jonathan Clayden、Jérémy Dufour、Damian M. Grainger、Madeleine Helliwell
DOI:10.1021/ja071523a
日期:2007.6.1
On lithiation, N-benzyl ureas varying N‘-aryl substituents undergo a migration of the aryl ring to the α carbon of the N-benzylgroup. With chiral, enantiomerically pure N-α-methylbenzyl ureas, the rearrangement is stereospecific and creates a new, fully substituted stereogenic center α to N. Removal of the urea function by N-nitrosation and hydrolysis allows the synthesis of chiral tertiary carbinamines