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Preparation of tri-O-benzylcellulose by the use of nonaqueous cellulose solvents

✍ Scribed by Akira Isogai; Atsushi Ishizu; Junzo Nakano

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
725 KB
Volume
29
Category
Article
ISSN
0021-8995

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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.