Formic Acid → 2-Propenoic acid, 3-phenyl-

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Reaction Steps

A mixture of 103.2 g of 1,1,1,3-tetrachloro-3-phenylpropane, 120 g of 85% formic acid and 17 g of Ostion KSC cation exchanger is refluxed at 100° to 105° C. for 7 h while hydrogen chloride and carbon monoxide is evolved. The cation exchanger is separated by filtration, the filtrate is cooled and the crystals precipitated are filtered off and washed with water to give 46.8 g of cinnamic acid in 79% chemical yield (melting point 127° to 133.5° C. and min. 97% purity).

Provenance & Evidence