2-Chloro-6-fluorobenzoyl isocyanate → Tert-butyl 2-((2-chloro-6-fluorobenzoyl)carbamoyl)-2-(3-methoxy-4-(methoxycarbonyl)phenyl)hydrazinecarboxylate

Participants

Reaction Steps

The title compound was prepared according to the procedure described in step-1 of Intermediate-9 by using 2-chloro-6-fluorobenzoyl isocyanate (Intermediate-8, 2.0 g, 6.75 mmol), tert-butyl 2-(3-methoxy-4-(methoxycarbonyl)phenyl)hydrazinecarboxylate (Intermediate-14, 2.0 g, 10.10 mmol) and DCM (30 mL) to afford 3.0 g of desired product. 1H NMR (300 MHz, DMSO do): δ 1.42 (s, 9H), 3.76 (s, 6H), 6.99 (d, J=8.1 Hz, 1H), 7.11 (s, 1H), 7.2-7.50 (m, 4H), 9.88 (s, 1H), 11.32 (s, 1H); MS (m/z): 493.92 (M−H)−.

Provenance & Evidence