Hydroquinone dimethyl ether

Details Hydroquinone dimethyl ether Hydroquinone dimethyl ether

1978-11-15

1980-05-20

Helfin, Bernard

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

Organic compounds

Oxygen containing

C07C 4100

Patent

active

042040760

ABSTRACT:
Cyclohexanedione-(1,4)-tetramethyl diketal of the formula ##STR1## is obtained by catalytic hydrogenation of p-benzoquinone tetramethyl diketal in a basic medium, at a temperature of from about -10.degree. to +150.degree. C. The product gives cyclohexanedione-(1,4), on acid hydrolysis, which is a valuable starting product for various syntheses, for example for tetracyanoquinodimethane, a desired compound in the field of semiconductors.
Hydroquinone dimethyl ether, which is a valuable intermediate for the dyestuff preparation, is obtained from cyclohexanedione-(1,4)-tetramethyl diketal by catalytic dehydrogenation.

REFERENCES:
patent: 4057586 (1977-11-01), Pistorius
Krekeler et al., Chemical Abstracts, vol. 84, (1976), 150343n.
Kirschke et al., Chemical Abstracts, vol. 84, (1976), 58270p.
Johannissian et al., Chemical Abstracts, vol. 25, (1931), 921-922.

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