The Generation of Difluoroketenimine and Its Application in the Synthesis of α,α‐Difluoro‐β‐amino Amides
作者:Rui Zhang、Zhikun Zhang、Qi Zhou、Lefei Yu、Jianbo Wang
DOI:10.1002/anie.201901591
日期:2019.4.16
Fluorine‐containing β‐amino acids and their derivatives have attracted significant attention due to their importance in life sciences. Herein the previously unknown difluoroketenimine, the analogue of the elusive difluoroketene, has been generated by the reaction of difluorocarbene and isocyanide, which further undergoes [2+2] cycloaddition with imine. The three‐component reaction affords α,α‐difluoro‐β‐amino amides
An efficient method for the preparation of N-phosphinoyl and N-sulphonyl imines directly from aromatic aldehydes
作者:W.Brian Jennings、Carl J. Lovely
DOI:10.1016/s0040-4039(00)82164-4
日期:——
Reaction of phosphinamides and sulphonamides with aromatic aldehydes at 0°C in the presence of titanium tetrachloride and triethylamine provides a simple one-step preparation of N-phosphinoyl and N-sulphonyl imines.