Intermediates used in the process for preparing 1(4-pentenoyl)-3

Details Intermediates used in the process for preparing 1(4-pentenoyl)-3 Intermediates used in the process for preparing 1(4-pentenoyl)-3

1982-05-06

1983-11-01

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

562508, C07C 5980, C07C 6973

Patent

active

044131399

ABSTRACT:
Described is a process for preparing the compound having the structure: ##STR1## comprising the steps of reacting 1-acetyl-3,3-dimethylcyclohexane with a dialkyl carbonate; thereby forming a ketoester having the structure: ##STR2## wherein R represents C.sub.1 -C.sub.3 lower alkyl; reacting the said ketoester with an allyl halide to form a substituted ketoester having the structure: ##STR3## saponifying the substituted ketoester with base forming a substituted keto carboxylic ester salt; and hydrolyzing the said keto carboxylic acid salt with acid to form the corresponding acid; and then heating and decarboxylating the resulting keto carboxylic acid to form the desired compound.

REFERENCES:
Chemical Abstracts, vol. 1, p. 2702, Line 5, Wahl et al., "Ethyl Hexahydrobenzoylacetate", I.
Chemical Abstracts, vol. 3, p. 167, Line 37, Wahl et al., "Hexahydrobenzoylacetic Esters", II.
Chemical Abstracts, vol. 1, p. 2473, Line 31, Zelinsky et al., "Ethyl Hexahydrobenzoylacetate".

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