Silver Salt-Mediated Allylation Reactions Using Allyl Bromides
作者:Xiaodong Xiong、Jonathan Wong、Ying-Yeung Yeung
DOI:10.1021/acs.joc.1c00480
日期:2021.5.7
A facile, efficient, and chemoselective synthesis of allylic amides has been developed. Allyl bromides were used as the precursors activated by silver triflate. A Ritter-type reaction readily proceeded to give various allyl amides under mild conditions. The reaction protocol was also applicable to different nucleophilic partners to give a wide range of allyl-substituted products in the absence of a
Isomerization of Aziridines to Allyl Amines via Titanium and Chromium Cooperative Catalysis
作者:Chengbo Yao、Alana D. N. Williams、Yiting Gu、Jack R. Norton
DOI:10.1021/acs.joc.1c03054
日期:2022.4.1
cooperative catalyst isomerizes aziridines to allyl amines under mild conditions. The reaction tolerates a broad range of aziridines with various nitrogen substituents. The titanium catalyst is most successful in opening 1,2-disubstituted aziridines, forming radical intermediates in a highly regioselective manner. The chromium catalyst appears to abstract an H• from these radical intermediates and