Process for the preparation of cyclohexanedione-(1,4)-...

C - Chemistry – Metallurgy – 07 – C

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260/646.1

C07C 43/30 (2006.01) C07C 41/28 (2006.01) C07C 45/51 (2006.01)

Patent

CA 1089492

Abstract of the Disclosure Cyclohexanedione-(1,4)-tetramethyl diketal of the formula Image is obtained by catalytic hydrogenation of p-benzoquinone tetra- methyl diketal in a basic medium, at a temperature of from about -10 to +150°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.

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