A ligand-free copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes in PEG-water: an expeditious protocol towards regiospecific 1-aryl benzotriazoles
CLARK R. L.; PESSOLANO A. A.; SHEN T.-Y.; JACOBUS D. P.; JONES H.; LOTTI +, J. MED. CHEM., 1978, 21, NO 9, 965-978
作者:CLARK R. L.、 PESSOLANO A. A.、 SHEN T.-Y.、 JACOBUS D. P.、 JONES H.、 LOTTI +
DOI:——
日期:——
US4000286A
申请人:——
公开号:US4000286A
公开(公告)日:1976-12-28
A ligand-free copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes in PEG-water: an expeditious protocol towards regiospecific 1-aryl benzotriazoles
作者:Chhanda Mukhopadhyay、Pradip Kumar Tapaswi、Ray J. Butcher
DOI:10.1039/c0ob00177e
日期:——
An efficient and highly versatile method for the synthesis of diverse regiospecific 1-arylbenzotriazoles being important medicinal scaffolds, by the copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes of 2-haloaryldiazonium salts in PEG-water has been developed. A very simple reaction protocol, large number of substrate affordability and excellent yields are the main features of this methodology.