Verkade's superbases were found to be efficient organocatalysts for the Strecker reaction, leading to high yield, in short reaction time and requiring low catalyst loading.
Methyltrioxorhenium/urea hydrogen peroxide catalyzed oxidation of N-sulfinyl imines: A mild and highly efficient access to N-sulfonyl aldimines, ketimines and α-ketiminoesters
作者:Yu Tan、Ru-Lin Ma、Hua Lin、Xing-Wen Sun
DOI:10.1016/j.tetlet.2020.152587
日期:2020.12
A mild and highly efficient access to N-sulfonyl imines through the oxidation of corresponding N-tert-butylsulfinyl imines and N-p-tosyl-sulfinyl imines with UHP in the presence of catalytic amount MTO was developed. Under mild reaction conditions, this highly selective reaction, provides a general and efficient access to N-sulfonyl aldimines, ketimines and α-ketiminoesters in excellent yield. The
The effect of zinc(II)bromide on the reduction of a chiral, non-racemic, benzylidene sulphinamide derived from a recoverable, cyclic sulphinamide
作者:David.R.J. Hose、Martin Wills、Tony Raynham
DOI:10.1016/s0040-4039(00)77091-2
日期:1994.7
The addition of zinc(II)bromide reverses the diastereoselectivity of the diisobutyl-aluminium hydride (DIBAL-H) reduction of benzylidene sulphinamide R(S)R-(−)-4. The same reversal is not observed in the reactions of analogues lacking an amide side chain.