Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazole

Details Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazole Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazole

1977-04-20

1978-08-15

Rizzo, Nicholas S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260307D, 260296H, C07D27766

Patent

active

041071697

ABSTRACT:
A method is provided for the preparation of 2-arylbenzoxazoles and 2-arylbenzthiazoles which comprises reacting a trichloromethyl-substituted aromatic compound with an aromatic compound carrying one amino group and one hydroxy or mercapto group in ortho position to each other. The compounds obtained by the process of the invention form the basis of numerous optical brighteners and find use in dyes, cosmetics, pharmaceuticals and heat-resistant fibers.

REFERENCES:
patent: 2985661 (1961-05-01), Hein et al.

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