反应详情

6.2 g of dicyclohexylcarbodiimide were added to a mixture of 9.5 g of the product of Step B, 30 ml of methylene chloride and 3 ml of pyridine and after stirring for 30 minutes, 6.8 g of (S)α-cyano-3-phenoxy-benzyl alcohol were added to the mixture. The mixture was stirred for 90 minutes and was filtered and the filtrate was washed with N hydrochloric acid and then with water until the wash water was neutral, dried and evaporated to dryness. The 16.3 g of oil residue were chromatographed over silica gel and eluted with a 97-3 benzene-ethyl acetate mixture to obtain 12 g of (S)α-cyano-3-phenoxy-benzyl(1R,cis)2,2-dimethyl-3-(2,2,2-trichloroethoxycarbonyl-ethynyl]-cyclopropane-carboxylate melting at 101° C.

1. stirringThe mixture was stirred for 90 minutes
2. filtrationwas filtered
3. washthe filtrate was washed with N hydrochloric acid
4. customdried
5. customevaporated to dryness
6. customThe 16.3 g of oil residue were chromatographed over silica gel
7. washeluted with a 97-3 benzene-ethyl acetate mixture