Cu-mediated selective O-arylation on C-6 substituted pyridin-2-ones
摘要:
A practical and mild strategy has been developed for the selective O-arylation on C-6 substituted pyridin-2-ones with a series of arylboronic acids, using Cu(OTf)(2) as the catalyst, DABCO as the ligand, Et3N as the base, and K2HPO4 as the additive. This method affords O-arylated pyridin-2-ones with good selectivity and yields (C) 2013 Elsevier Ltd. All rights reserved.
Vinylogous Blaise Reaction: Conceptually New Synthesis of
Pyridin-2-ones
作者:H. Rao、Nandurka Muthanna、Ashiq Padder
DOI:10.1055/s-0037-1610171
日期:2018.7
A conceptuallynewsynthesis of pyridine rings by a [C4 + CN] assembly has been developed by applying a vinylogous version of the classic Blaisereaction. The zinc-mediated reaction of (het)aryl or alkyl nitriles with ethyl-4-bromocrotonate provided a variety of C(6)-substituted pyridin-2-ones in a single-step.
Intermolecular Buchwald–Hartwig Reactions for Enantioselective Synthesis of Diverse Atropisomers: Rerouting the C–N Forming Mechanism to Substrate Oxygen-Assisted Reductive Elimination
作者:Wei Wang、Mingwei Jiang、Junwei Li、Fen Wang、Xiao-Xi Li、Jing Zhao、Xingwei Li
DOI:10.1021/jacs.4c03342
日期:2024.6.19
intermolecular Buchwald–Hartwig coupling systems of bulky NH lactams and halohydrocarbons enabled by rerouting the mechanism of C–N reductive elimination to one that accommodates sterically challenging substrates. Both atroposelective coupling systems exhibited functional group tolerance, excellent enantioselectivity, and high Z selectivity (if applicable), affording C–N atropisomericbiaryl and olefins