Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-05-14
1977-08-16
Shaver, Paul F.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260369, C09B 100, C09B 136
Patent
active
040426050
ABSTRACT:
A process for the production of 1,4-diaminoanthraquinone-2,3-dinitrile by the reaction of a diaminoanthraquinone of the formula (I): ##STR1## in which R.sup.1 and R.sup.2 independently of one another are hydrogen, chloro or bromo, with an ionic cyanide in a polar aprotic solvent, the reaction in the case when R.sup.1 and R.sup.2 are both hydrogen being carried out in the presence of an ammonium salt and the reaction product formed is dehydrogenated or the reaction is carried out with the ionic cyanide under dehydrogenating conditions.
The process yields the dinitrile of formula (I) in which R.sup.1 = R.sup.2 = CN in a good yield and high purity.
1,4-diaminoanthraquinone-2,3-dinitrile is a dye and an important starting material for the manufacture of dyes.
REFERENCES:
patent: 1728216 (1929-09-01), Schirmacher et al.
patent: 1879535 (1932-09-01), Schmidt et al.
patent: 2496414 (1950-02-01), Seymour et al.
patent: 2525621 (1950-10-01), Scalera et al.
patent: 3084015 (1963-04-01), Grossmann et al.
patent: 3203751 (1965-08-01), Hildreth
patent: 3739009 (1973-06-01), Sturm et al.
BASF - Aktiengesellschaft
Shaver Paul F.
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