Highly Efficient CuI-Catalyzed Coupling of Aryl Bromides with Oxazolidinones Using Buchwald's Protocol: A Short Route to Linezolid and Toloxatone
摘要:
[GRAPHICS]Coupling of a variety of substituted aryl bromides with oxazolidinones has been achieved using the Buchwald protocol for the amidation of aryl halides. This procedure is exemplified by the synthesis of two medicinally important molecules, linezolid and toloxatone.
Chemoselective bond activation by unidirectional and asynchronous PCET using ketone photoredox catalysts
作者:Rui Sun、Serge Ruccolo、Daniel L. Nascimento、Yangzhong Qin、Nathaniel Hibbert、Daniel G. Nocera
DOI:10.1039/d3sc04362b
日期:——
The tripletexcited states of ketones are found to effect selective H-atom abstraction from strong amide N–H bonds in the presence of weaker C–H bonds through a proton-coupled electron transfer (PCET) pathway. This chemoselectivity, which results from differences in ionization energies (IEs) between functional groups rather than bond dissociation energies (BDEs) arises from the asynchronicity between