Benzimidazo-[1,2-a]-quinolines

Details Benzimidazo-[1,2-a]-quinolines Benzimidazo-[1,2-a]-quinolines

1976-03-09

1978-11-07

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 48, 546 52, 546 41, C07D47104

Patent

active

041245890

ABSTRACT:
Benzimidazo-[1,2-a]-quinolines, of the general formula ##STR1## which may be substituted, are prepared by reacting 2-alkoxy-benzaldehydes with 2-phenylsulfonylmethylene-benzimidazoles. The compounds are strongly fluorescing and can be used as optical brighteners and fluorescent dyestuffs.

REFERENCES:
patent: 3644369 (1972-02-01), Houlihan et al.
patent: 3894029 (1975-07-01), Winterfeldt et al.
Morgan et al. I, "J. Chem. Soc.", (1938) p. 1292 ff.
IBID. II (1939) p. 1057ff.

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