Tetrabenzylhafnium as a New Organometallic Reagent for Imine Addition Resulting in α-Branched Amines
作者:Haibo Mei、Xiaoyun Ji、Jianlin Han、Yi Pan
DOI:10.1002/ejoc.201100820
日期:2011.10
Tetrabenzylhafnium has been explored as a new organometallicreagent for the imine addition reaction. This reagent tolerates a wide scope of imines, affording α-branched amines in excellent yields without the use of any additive or catalyst. This new reagent shows higher efficiency than that observed for classic Grignard and organolithium reagents.
Benzylation of Imines with Activated Boronate Nucleophiles
作者:Michael R. Hollerbach、Jacob C. Hayes、Timothy J. Barker
DOI:10.1002/ejoc.201801804
日期:2019.2.21
Benzylation reactions of N-tosyl imines and N-tert-butanesulfinyl imines using benzylboronic acid pinacol ester are reported. s-Butyllithium was used to activate the boronic ester, rendering it nucleophilic. The reaction was compatible with electronically diverse substituents on the imine in both substrate classes. Good diastereoselectivity was observed in additions to N-tert-butylsulfinylaldimines