Metal-Free Oxidative C-H Amidation of<i>N</i>,<i>N′</i>-Diarylureas with PhI(OAc)<sub>2</sub>: Synthesis of Benzimidazol-2-one Derivatives
作者:Jipan Yu、Chang Gao、Zhixuan Song、Haijun Yang、Hua Fu
DOI:10.1002/ejoc.201500726
日期:2015.9
compounds or intramolecular N-arylations using substrates with carbon-halogen bonds. However, the starting materials of these protocols are often not readily available. Herein, a simple and practical metal-free oxidative C–H amidation of N,N′-diarylureas has been developed that takes place at room temperature. This protocol uses readily available N,N′-diarylureas as the starting materials and inexpensive
Catalyst‐Free Electrosynthesis of Benzimidazolones through Intramolecular Oxidative C−N Coupling
作者:Jiang‐Sheng Li、Pan‐Pan Yang、Xin‐Yun Xie、Si Jiang、Li Tao、Zhi‐Wei Li、Cui‐Hong Lu、Wei‐Dong Liu
DOI:10.1002/adsc.202000198
日期:2020.5.12
The electrochemicalsynthesis of N, N’‐disubstituted benzimidazolones from ureas through an intramolecular anodic dehydrogenative N−H/C−H coupling has been developed. The reaction undergoes under the undivided electrolysis conditions and obviates the need for any catalysts and chemical oxidants.
FUSED HETEROCYCLIC COMPOUNDS AS PHOSPHODIESTERASES (PDES) INHIBITORS
申请人:Taniguchi Takahiko
公开号:US20130172328A1
公开(公告)日:2013-07-04
The present invention provides a compound which has the effect of PDE inhibition, and which is useful as an agent for preventing or treating schizophrenia or so on represented by the formula (I):