Amide Synthesis by Nickel/Photoredox‐Catalyzed Direct Carbamoylation of (Hetero)Aryl Bromides
作者:Nurtalya Alandini、Luca Buzzetti、Gianfranco Favi、Tim Schulte、Lisa Candish、Karl D. Collins、Paolo Melchiorre
DOI:10.1002/anie.202000224
日期:2020.3.23
Herein, we report a one‐electron strategy for catalytic amide synthesis that enables the direct carbamoylation of (hetero)aryl bromides. This radical cross‐coupling approach, which is based on the combination of nickel and photoredox catalysis, proceeds at ambient temperature and uses readily available dihydropyridines as precursors of carbamoyl radicals. The method's mild reaction conditions make
QUINUCLIDINE DERIVATIVES BINDING TO MUCARINIC M3 RECEPTORS
申请人:Collingwood Stephen Paul
公开号:US20100041887A1
公开(公告)日:2010-02-18
Compounds of formula I
in salt or zwitterionic form wherein, wherein R
1
, R
2
, R
3
, and R
4
have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
Quinuclidine derivatives binding to mucarinic m3 receptors
申请人:Collingwood Paul Stephen
公开号:US20070060563A1
公开(公告)日:2007-03-15
Compounds of formula I
in salt or zwitterionic form wherein, wherein R
1
, R
2
, R
3
, and R
4
have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
Hydrosilylative reduction of secondary amides to amines catalyzed by geometry-constrained <i>NNN</i>-cobalt complexes
作者:Shuting Dong、Zhijian Zong、Nan Sun、Baoxiang Hu、Zhenlu Shen、Xinquan Hu、Liqun Jin
DOI:10.1039/d3nj00372h
日期:——
tridentate NNN-cobalt complex for the hydrosilylative reduction of secondary amides with the low-cost PMHS as the hydride donor reductant. In this catalytic protocol, a wide range of secondary amides, including benzamide-type and aliphatic carboxylic acid-derived secondary amides, served as suitable substrates to afford their corresponding secondary amines in moderate to excellent yields. The scaled-up reaction