Dearomative Migratory Rearrangement of 2-Oxypyridines Enabled by α-Imino Rhodium Carbene
作者:Guangyang Xu、Ying Shao、Shengbiao Tang、Qun Chen、Jiangtao Sun
DOI:10.1021/acs.orglett.0c03533
日期:2020.12.4
migratory rearrangement reactions of 2-oxypyridines with N-sulfonyl-1,2,3-triazoles have been developed under rhodium catalysis, providing a reliable and efficient protocol for accessing N-substituted 2-pyridones. These two distinct rearrangements feature the controllable 1,4-migration of a carbonate group from O-to-C as well as the O-to-N 1,6-migration of an acyl group via α-imino rhodium carbene transfer
Process for Preparing 2-Hydroxy-Substituted Pyridines
申请人:Sasaki Mie
公开号:US20080286843A1
公开(公告)日:2008-11-20
A process for preparing a 2-hydroxy-4-substituted pyridine compound using a microbiological method, a novel microorganism, and a novel compound are provided.
According to the process, a function of a microorganism or a product obtained therefrom is exerted on a 4-substituted pyridine of the general formula (1):
wherein R is a methyl group, a carboxyl group, a carbamoyl group, a hydroxyiminomethyl group or a cyano group, to obtain the corresponding 2-hydroxy-4-substituted pyridine compound. The novel microorganisms are the
Delftia
species YGK-A649 (FERM BP-10389),
Delftia
species YGK-C217 (FERM BP-10388), or
Acidovorax
species YGK-A854 (FERM BP-10387) and the novel compound is a 2-hydroxy-4-pyridinaldoxime.
Process for preparing 2-Hydroxy-4-Substituted Pyridines
申请人:Yuki Gosei Kogyo Co., Ltd.
公开号:US07803585B2
公开(公告)日:2010-09-28
A process for preparing a 2-hydroxy-4-substituted pyridine compound using a microbiological method, a novel microorganism, and a novel compound are provided.
Process for preparing 2-hydroxy-4-substituted pyridines
申请人:Yuki Gosei Kogyo Co., Ltd.
公开号:US08227617B2
公开(公告)日:2012-07-24
A process for preparing a 2-hydroxy-4-substituted pyridine compound using a microbiological method, a novel microorganism, and a novel compound are provided.
PROCESS FOR PREPARING 2-HYDROXY-4-SUBSTITUTED PYRIDINES
申请人:Sasaki Mie
公开号:US20110034697A1
公开(公告)日:2011-02-10
A process for preparing a 2-hydroxy-4-substituted pyridine compound using a microbiological method, a novel microorganism, and a novel compound are provided.