Method of preparing 2-phenyl benezothriazoles

Details Method of preparing 2-phenyl benezothriazoles Method of preparing 2-phenyl benezothriazoles

1990-04-02

1992-04-14

Davis, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548259, 548261, C07D24918

Patent

active

051049929

ABSTRACT:
A method of preparing 2-phenylbenzotriazoles expressed by Formula I: ##STR1## (wherein R.sub.1 denotes a hydrogen or chlorine atom, a lower alkyl group having 1 to 4 carbon atoms, a lower alkoxyl group having 1 to 4 carbon atoms, a carboxyl group or a sulfonic acid group; R.sub.2 denotes a hydrogen or chlorine atom, a lower alkyl group having 1 to 4 carbon atoms or a lower alkoxyl group having 1 to 4 carbon atoms; R.sub.3 denotes a hydrogen or chlorine atom, an alkyl group having 1 to 12 carbon atoms, a lower alkoxy group having 1 to 4 carbon atoms, a phenyl group, a phenyl group substituted by an alkyl group having 1 to 8 carbon atoms, a phenoxy group or a phenylalkyl group with an alkyl part having 1 to 4 carbon atoms; R.sub.4 denotes a hydrogen or chlorine atom, a hydroxyl group or an alkoxyl group having 1 to 4 carbon atoms; and R.sub.5 denotes a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or a phenylalkyl group with an alkyl part having 1 to 4 carbon atoms) comprises reducing with hydrogen 2-phenylbenzotriazole-N-oxides expressed by Formula II: ##STR2## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each denotes the same as in Formula I).

REFERENCES:
patent: 3978074 (1976-08-01), Jancis
patent: 4086242 (1978-04-01), Diehl
patent: 4943637 (1990-07-01), Seino et al.
patent: 4999433 (1991-03-01), Prestel
CA 109 (19): 170439m abstracting JP 072682 1988.
Kawaken Chem. Abstr. vol. 88 Entry 105346n Abstracting JP 77-113973 (1977).
CA 102 (5): 45959k abstracting JP170172 1984.
CA 88 (26): 197149b abstracting JP 133076 1977.
CA 88 (21): 152408u abstracting JP 133973 1977.
CA 88 (15): 105347p abstracting JP 113974 1977.
CA 106 (21): 176394e abstracting JP 215378 1986.
CA 110 (6): 47417w abstracting JP 186886 1988.

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