Trifluoroacetic acid → methyl 5-[3-(2-chloro-6-fluorophenyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl]-2-methoxybenzoate

Participants

Reaction Steps

The title compound was prepared according to the procedure described in step-2 of Intermediate-9 by using tert-butyl 2-[(2-chloro-6-fluorobenzoyl)carbamoyl]-2-[4-methoxy-3-(methoxycarbonyl)phenyl]hydrazinecarboxylate (3.0 g, 6.06 mmol), DCM (30 mL) and trifluoro acetic acid (3.0 mL) to afford 2.0 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 3.80 (s, 3H), 3.84 (s, 3H), 7.28 (d, J=9.3 Hz, 1H), 7.49 (t, J=8.7 Hz, 1H), 7.57 (d, J=8.4 Hz, 1H), 7.65-7.73 (m, 1H), 8.06 (d, J=9.0 Hz, 1H), 8.18 (s, 1H), 12.62 (s, 1H); MS (m/z): 376.27 (M−H)−.

Provenance & Evidence