Functionalization of Boranes through Thiol/Oxygen Catalysis†
摘要:
Comprehensive SummaryA greener and more convenient alternative to traditional methods for the generation of thiyl radical as hydrogen atom transfer (HAT) catalyst is developed, using molecular oxygen to oxidize thiol without the need for chemical initiators or light irradiation. The thiol/oxygen catalysis enables selective and efficient difunctionalization of borane.
Functionalization of Boranes through Thiol/Oxygen Catalysis†
摘要:
Comprehensive SummaryA greener and more convenient alternative to traditional methods for the generation of thiyl radical as hydrogen atom transfer (HAT) catalyst is developed, using molecular oxygen to oxidize thiol without the need for chemical initiators or light irradiation. The thiol/oxygen catalysis enables selective and efficient difunctionalization of borane.
Radical Redox-Relay Catalysis: Formal [3+2] Cycloaddition of <i>N</i>-Acylaziridines and Alkenes
作者:Wei Hao、Xiangyu Wu、James Z. Sun、Juno C. Siu、Samantha N. MacMillan、Song Lin
DOI:10.1021/jacs.7b06723
日期:2017.9.6
report Ti-catalyzed radical formal [3+2] cycloadditions of N-acylaziridines and alkenes. This method provides an efficient approach to the synthesis of pyrrolidines, structural units prevalent in bioactive compounds and organocatalysts, from readily available starting materials. The overall redox-neutral reaction was achieved via a redox-relay mechanism, which harnesses radical intermediates for selective