Process for preparing trans-chrysanthemic acid

Details Process for preparing trans-chrysanthemic acid Process for preparing trans-chrysanthemic acid

1973-11-13

1976-03-09

Gerstl, Robert

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260468H, C07C 5142

Patent

active

039431673

ABSTRACT:
A process for preparing trans-chrysanthemic acid which comprises reacting a mixture of alkyl trans-chrysanthemate and alkyl cis-chrysanthemate with an equimolar amount or less of an alkali with respect to the trans-isomer in the presence of water or an alcohol to hydrolyze the trans-isomer predominantly and separating the hydrolyzed trans-isomer from the unreacted cis-isomer.

REFERENCES:
patent: 3046299 (1962-07-01), Julia
patent: 3538143 (1970-11-01), Matsui et al.
Eliel et al., JACS 83, 2351 (1961).
Eliel, Stereochemistry of Carbon Compounds, 222-224 (1962).
Patai, The Chemistry of Carboxylic Acids and Esters, 521-523 (1969).

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