Process for the manufacture of 4-(2-butenylidene)-3,5,5-trimethy

Details Process for the manufacture of 4-(2-butenylidene)-3,5,5-trimethy Process for the manufacture of 4-(2-butenylidene)-3,5,5-trimethy

1991-02-01

1991-12-10

Reamer, James H.

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

Organic compounds

Carboxylic acid esters

560259, 568378, 558260, 558270, C07C 6978

Patent

active

050720198

ABSTRACT:
A method for the manufacture of the four geometric isomers of 4-(2-butenyl)idene)-3,5,5-trimethy-2-cyclohexen-1-one is provided. The process comprises pyrolyzing a compound of the formula ##STR1## wherein R represents lower-alkyl-oxycarbonyl, aryl-oxycarbonyl, or, preferably, lower-alkanoyl, benzoyl or substituted benzoyl.

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