Process for the preparation of benzofuran compounds

Details Process for the preparation of benzofuran compounds Process for the preparation of benzofuran compounds

1975-04-11

1976-11-30

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260240E, 2602477T, 26029358, 26024715, 260307D, 2603462M, C07D30779

Patent

active

039948790

ABSTRACT:
Novel azomethines are obtained when reacting a tertiary amine with an aromatic aldehyde or ketone having in orthoposition an activated methoxy group. These azomethines are capable of ring closure to yield a benzofurane and said tertiary amine. The benzofuranes are optical brighteners tranquilizers or intermediates for optical brighteners, fluorescent dyestuffs, scintiallators, sensibilizers for electrophotographic coatings.

REFERENCES:
patent: 3781279 (1973-12-01), Crounse et al.
patent: 3864333 (1975-02-01), Sahm et al.

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