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Zinc-mediated Reductive Dimerization Cyclization of Ethyl Arylmethylidene cyanoacetates in Aqueous Media

✍ Scribed by Wang, Lei; Zhang, Yongmin

Book ID
120689831
Publisher
Science Reviews 2000 Ltd
Year
1999
Tongue
English
Weight
97 KB
Volume
7
Category
Article
ISSN
0308-2342

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## Abstract 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.