Premium
Preparation of 2‐Aryl‐2 H ‐benzotriazoles by Zinc‐Mediated Reductive Cyclization of o ‐Nitrophenylazophenols in Aqueous Media without the Use of Organic Solvents
Author(s) -
Liu GuoBin,
Zhao HongYun,
Yang HongJie,
Gao Xiang,
Li MiaoKui,
Thiemann Thies
Publication year - 2007
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200700018
Subject(s) - chemistry , zinc , aryl , aqueous solution , aqueous medium , organic chemistry , medicinal chemistry , alkyl
Zinc powder‐mediated reductive cyclization of o ‐nitrophenylazophenols in alkaline solution affords the corresponding 2‐aryl‐2 H ‐benzotriazoles in high yields under mild reaction conditions. No organic solvents are used in the reaction and only minimal amounts in the work‐up.