Process for producing benzodifuranone compounds useful for dyein

Details Process for producing benzodifuranone compounds useful for dyein Process for producing benzodifuranone compounds useful for dyein

1992-09-30

1994-02-15

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 50, 549 51, 549 52, 549 57, 549 58, 549 60, 540596, 546197, 546270, 544 60, 544147, 544148, 544180, 544212, 544216, 544375, 544378, 548128, 548129, 548159, 548186, 548193, 548194, 548200, 548203, 548225, 548228, 548229, 548221, 548222, 548217, 548233, 548235, 548526, 5483117, 5483051, 5483615, 5483621, 5483625, 5483644, C07D30791, C07D49502, C07D40312, C07D40512

Patent

active

052868818

ABSTRACT:
A benzodifuranone compounds of the formula, ##STR1## wherein R.sup.1 and R.sup.2 are each independently a naphthyl group or an unsubstituted or substituted phenyl group, which is useful for dyeing or printing hydrophobic fiber materials, is prepared in high purity and high yield by allowing benzofuran compounds of the formula, ##STR2## wherein R.sup.1 is as defined above, to react with acetonitrile compounds of the formula, ##STR3## wherein R.sup.2 is as defined above, and then carrying out an oxidation reaction to give the benzodifuranone compound.

REFERENCES:
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patent: 4333877 (1982-06-01), Carey et al.
patent: 4650882 (1987-03-01), Kenyon et al.
patent: 4680417 (1987-07-01), Kenyon et al.
patent: 4916240 (1990-04-01), Kenyon
patent: 5223616 (1993-06-01), Yamamoto et al.
112 Chemical Abstracts No. 22--Abstract No. 200605u (May 28, 1990).
C. W. Greenhalgh et al, The Synthesis of Quinodimethanes In The Benzodifuranone And Benzodipyrrolidone Series, 1 Dyes and Pigments 103-120 (1980).

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