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

1989-08-28

1991-05-14

Reamer, James H.

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

Organic compounds

Oxygen containing

560259, 568348, C07C 4565

Patent

active

050157795

ABSTRACT:
A method for the manufacture of the four geometric isomers of 4(2-butenylidene)-3,5,5-trimethyl-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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