Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1980-07-24
1981-10-13
Douglas, Winston A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C 9712
Patent
active
042947693
ABSTRACT:
2,3-Dicyano-anthraquinones of the formula ##STR1## wherein R denotes hydrogen, alkyl or cycloalkyl, are obtained in good yields and high purity by reacting compounds of the formula ##STR2## wherein X denoted hydrogen or the sulphonic acid group, with cyanides in formamide or N-methylformamide as solvents, and if appropriate oxidizing agents and heavy metal catalysts.
REFERENCES:
patent: 1938029 (1933-12-01), Kugel
patent: 4042605 (1977-08-01), Hartwig
Krock Friedrich W.
Neeff Rutger
Scheiter Heinz
Bayer Aktiengesellschaft
Covington Raymond K.
Douglas Winston A.
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