2-(2,4-Difluorophenyl)-1,3-thiazole-4-carboxylic acid → HCID 86713953, compound

Participants

Reaction Steps

Following the procedure for Example 111 starting from tert-butyl ((3S,4R,7S)-3-fluoro-7-(1-methyl-4-nitro-1H-pyrazol-5-yl)oxepan-4-yl)carbamate (Intermediate 80), and replacing 5-((tert-butoxycarbonyl)amino)-2-(2,6-difluorophenyl)thiazole-4-carboxylic acid with 2-(2,4-difluorophenyl)thiazole-4-carboxylic acid (see US2008/76771) gave 325. 1H NMR (400 MHz, DMSO-d6) δ 9.89 (s, 1H), 8.56-8.46 (m, 2H), 7.88 (s, 1H), 7.59-7.50 (m, 1H), 7.32-7.24 (m, 1H), 4.87 (dd, J=10.4, 3.5 Hz, 1H), 4.57-4.38 (m, 1H), 4.38-4.23 (m, 1H), 4.18-3.98 (m, 1H), 3.78 (s, 3H), 2.14-2.02 (m, 1H), 1.88-1.66 (m, 4H). LCMS (ES+) m/z 452 (M+1).

Provenance & Evidence