Stereoselective Oxidative Cyclization of <i>N</i>-Allyl Benzamides to Oxaz(ol)ines
作者:Ayham H. Abazid、Tom-Niklas Hollwedel、Boris J. Nachtsheim
DOI:10.1021/acs.orglett.1c01607
日期:2021.7.2
This study presents an enantioselective oxidative cyclization of N-allyl carboxamides via a chiral triazole-substituted iodoarene catalyst. The method allows the synthesis of highly enantioenriched oxazolines and oxazines, with yields of up to 94% and enantioselectivities of up to 98% ee. Quaternary stereocenters can be constructed and, besides N-allyl amides, the corresponding thioamides and imideamides