Process for preparing bis (2-hydroxyphenyl-3-benztriazole) metha

Details Process for preparing bis (2-hydroxyphenyl-3-benztriazole) metha Process for preparing bis (2-hydroxyphenyl-3-benztriazole) metha

1997-07-28

1998-09-15

Morris, Patricia L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548259, C07D24920

Patent

active

058080864

ABSTRACT:
A 2-hydroxyphenylbenzotriazole is reacted with a formaldehyde and an amino alcohol in an organic solvent in the presence of a basic catalyst. It is thereby possible to obtain bis(2-hydroxyphenyl-3-benzotriazole) methanes efficiently and at a high yield.

REFERENCES:
patent: 3936305 (1976-02-01), Hiraishi et al.
patent: 5237071 (1993-08-01), Leistner et al.
Chemical Abstracts 62720h, vol. 77, No. 10, Columbus, Ohio, US; p. 28; XP002045035; Sep. 4, 1992.
Chemical Abstracts 19629q, vol. 79, No. 4, Columbus, Ohio, US; p. 38; XP002045036; Jul. 30, 1973.
Patent Abstracts of Japan, vol. 10, No. 303 (C-378), Oct. 16, 1986 which corresponds to JP 61 118373 A.

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