direct C3 trifluoromethylation of 2-pyridones including unprotected derivatives by an electrochemical approach using the readily available Langlois reagent as the CF3 source in the absence of electrolytes. The trifluoromethylationunder transition metal- and oxidant-free conditions occurred site-selectively to give the desired products in moderate to good yields under ambient conditions. Interestingly
Direct Synthesis of N‐Alkyl‐2‐Pyridones Using 2‐Halogenated Pyridines
作者:Xia Chen、Jianyi Shi、Yuqun Lin、Yibiao Li、Shaohua Jiang、Tianxiang Chen、Zhongzhi Zhu、Aijun Ma
DOI:10.1002/ejoc.202301184
日期:2024.2.12
This study presents a method for synthesizing pyridine, quinoline, and isoquinoline ketones from 2-halogenated N-heterocycles under mild conditions. The use of H2O as both solvent and oxygen source makes the reaction environmentally friendly, with broad substrate applicability and high functional group tolerance.
We demonstrate a ligand- and glovebox-free regioselective direct C(3)–H imidation of 2-pyridones and also benzylic-type imidation of 2-pyridones bearing a methyl substituent employing Cu(OAc)2·H2O as the catalyst and N-fluorobenzenesulfonimide (NFSI) as an imidating reagent. A broad range of imidated 2-pyridone derivatives is made up to excellent yields. The present strategy operates well on a gram
Preparation of <i>N</i>-Alkyl 2-Pyridones via a Lithium Iodide Promoted <i>O</i>- to <i>N</i>-Alkyl Migration: Scope and Mechanism
作者:Sarah Z. Tasker、Michael A. Bosscher、Christina A. Shandro、Erica L. Lanni、Keun Ah Ryu、Gregory S. Snapper、Jarrad M. Utter、Bruce A. Ellsworth、Carolyn E. Anderson
DOI:10.1021/jo3015424
日期:2012.9.21
An efficient and inexpensive LiI-promoted O- to N-alkyl migration of 2-benzyloxy-, 2-allyloxy-, and 2-propargyloxypyridines and heterocycles is reported. The reaction produces the corresponding N-alkyl 2-pyridones and analogues under green, solvent-free conditions in good to excellent yields (30 examples, 20–97% yield). This method has been shown to be intermolecular and requires heat and lithium cation
[EN] INHIBITORS OF PLASMA KALLIKREIN<br/>[FR] INHIBITEURS DE LA KALLICRÉINE PLASMATIQUE
申请人:SHIRE HUMAN GENETIC THERAPIES
公开号:WO2022197763A1
公开(公告)日:2022-09-22
The present invention provides compounds and compositions thereof which are useful as inhibitors of plasma kallikrein and which exhibit desirable characteristics for the same.