2-Chloro-6-fluorobenzoyl isocyanate → Tert-butyl 2-[(2-chloro-6-fluorobenzoyl)carbamoyl]-2-[4-methoxy-3-(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-[4-methoxy-3-(methoxycarbonyl)phenyl]hydrazinecarboxylate (Intermediate-10, 1.61 g, 8.18 mmol) and DCM (30 mL) to afford 3.0 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 1.40 (s, 9H), 3.81 (s, 6H), 7.13-7.83 (m, 6H), 9.6 (br s, 1H), 11.13 (br s, 1H); MS (m/z): 494.05 (M−H)−.

Provenance & Evidence