Asymmetric deprotonation of N,N-dihexyl-1-naphthamides to provide atropisomers of N,N-dihexyl-2-alkyl-1-naphthamides
摘要:
Asymmetric deprotonation of N,N-dihexyl-1-naphthamide using sec-butyllithium / (-)-sparteine followed by reactions with methyl or ethyl alkylation reagents give the atropisomers of N,N-dihexyl-2-alkyl-1-naphthamide with 50% and 55% ee, respectively. (C) 1996 Elsevier Science Ltd