Methyl Acrylate → 4-(m-Methylcinnamyl)-4-phenyl-5-oxo-7-(p-chlorophenyl)-6-heptenoic Acid

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Reaction Steps

Triton B (2 ml., 40% in MeOH) is added to a stirred solution of 1-(p-chlorophenyl)-4-phenyl-7-(m-methylphenyl)-1,6-heptadien-3-one (19.33 g., 0.05 mole) in glyme (250 ml.) followed by the addition of methyl acrylate (4.73 g., 0.055 mole) in glyme (50 ml.). The solution is stirred for 96 hours and the solvent is removed under reduced pressure. The residue is suspended in methanol (700 ml.) and a 20% sodium hydroxide solution (35 ml.) is added. After an additional 24 hours, the methanol is evaporated in vacuo and the residue is dissolved in water. Extraction with ether removes unreacted ketone. The aqueous solution is acidified and the solid that separates is collected, washed well with water, and air-dried, yield 9.78 g., m.p. 135°-144°C. Recyrstallization from butyl chloride produces material with m.p. 154°-155°C.

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