1-Methylcyclobutanol → (S)alpha-cyano-3-phenoxy-benzyl (1R,cis) 2,2-dimethyl-3-[2-(1-methyl-cyclobutoxycarbonyl)-ethynyl]-cyclopropane-carboxylate

Participants

Reaction Conditions

Reaction Steps

Using the procedure of Step A of Example 15, 3.9 g of (S)α-cyano-3-phenoxy-benzyl(1R,cis)2,2-dimethyl-3-(2-carboxyethynyl)-cyclopropane-carboxylate and 4.3 g of 1-methylcyclobutanol were reacted with stirring at 20° C. for 18 hours. The product was chromatographed over silica gel and was eluted with an 85-15 cyclohexane-ethyl acetate mixture to obtain 2.7 g of (S)α-cyano-3-phenoxy-benzyl(1R,cis)2,2-dimethyl-3-[2-(1-methyl-cyclobutoxycarbonyl)-ethynyl]-cyclopropane-carboxylate melting at 76° C.

Provenance & Evidence