反应详情

Prepared from 5-(5-Trifluoromethyl-4-methyl-isoxazol-3-yl)-thiophene-2-carboxylic acid and (S)-(+)-nipecotic acid, ethyl ester (TCI America, Portland Oreg., USA) by the method described in Example 2 Method B. Colorless solid (415 mg, 91%). 1H NMR (CDCl3) 1.19 (t, J=7.0, 3H), 1.50-1.60 (m, 1H), 1.66-1.82 (m, 2H), 2.02-2.12 (m, 1H), 2.29 (d, J=1.4, 3H), 2.46-2.56 (m, 1H), 3.13 (t, J=11.0, 1H), 3.28 (br s, 1H), 4.08 (q, J 7.0, 3H), 4.10 (obs m, 1H), 4.34 (br s, 1H), 7.28 (d, J=4.0, 1H), 7.39 (d, J=3.5, 1H). 19F NMR −63.12. LC/MS 6.74 min, [M+1]+ 417.

1. customLC/MS 6.74 min, [M+1]+ 417