Access to C4-arylated benzoxazoles from 2-amidophenol through C–H activation
作者:Kanchanbala Sahoo、Priyanka Pradhan、Niranjan Panda
DOI:10.1039/d0ob00061b
日期:——
A Pd-catalyzed aerobic approach to access C4-aryl benzoxazoles by tandem C-H ortho-arylation and acid-mediated annulation of 2-amidophenol has been presented. The directing potential of the -NHCOR group over the -OH group was exploited for selective arylation adjacent to the amide group. Deuterium labeling experiments suggest that palladation predominantly occurs adjacent to the -NHCOR group and is
Synthesis of 4‐Alkenyl Benzoxazoles via Pd‐catalyzed
<i>ortho</i>
C−H Functionalization of 2‐Amidophenols
作者:Niranjan Panda、Kanchanbala Sahoo
DOI:10.1002/adsc.201801272
日期:2019.2
A one‐pot direct transformation to remotely C−H alkene functionalized 2‐aryl benzoxazoles from the reaction of amidophenol and electronically deficient olefin was reported. Control experiments confirm that the Pd‐catalyzed regioselective C−Hactivation/alkenylation occurs at the first step by leading to ortho‐alkenylated amidophenol; which subsequently underwent tandem intramolecular annulation to
The present invention concerns compounds inter alia according to general formula 1
a
. Compounds according to the invention are vasopressin V
1a
receptor antagonists. Pharmaceutical compositions of the compounds are useful as treatment of dysmenorrhoea.
The present invention concerns compounds inter alia according to general formula 1a. Compounds according to the invention are vasopressin V
1a
receptor antagonists. Pharmaceutical compositions of the compounds are useful as treatment of dysmenorrhoea.
The present invention concerns compounds inter alia according to general formula 1a. Compounds according to the invention are vasopressin V1a receptor antagonists. Pharmaceutical compositions of the compounds are useful as treatment of dysmenorrhoea.