p-Toluenesulfonic acid → (S)alpha-cyano-3-phenoxy-4-fluoro-benzyl(1R,cis,Z)2,2-dimethyl-3-[3-oxo-3-hydroxy-1-propenyl]-cyclopropane-carboxylate

Participants

Reaction Steps

A mixture of 350 g of the product of Step A, 35 g of p-toluene sulfonic acid and 3.5 liters of toluene was refluxed for 45 minutes and was then cooled, washed with water, dried and evaporated to dryness under reduced pressure to obtain 328 g of (S)α-cyano-3-phenoxy-4-fluoro-benzyl(1R,cis,Z)2,2-dimethyl-3-[3-oxo-3-hydroxy-1-propenyl]-cyclopropane-carboxylate.

Provenance & Evidence