反应详情

Prepared from 4-Methyl-3-thiophen-2-yl-5-trifluoromethyl-isoxazole and 2-acetoxybenzoyl chloride by the method described in Example 3. Crude product was chromatographed on silica gel with EtOAc/hexanes (15 then 25%) as eluant to afford product as a tan colored solid (80 mg, 58%). 1H NMR (CDCl3) 2.39 (d, J=1.3, 3 H), 3.62 (s, 3 H), 7.57 (d, J=4.0, 1 H), 7.74 (d, J=4.0, 1 H). 19F NMR −63.1. LC/MS 7.82 min, [M+1]+ 276.

1. customCrude product was chromatographed on silica gel with EtOAc/hexanes (15