2-Methoxy-5-nitroaniline → 1-(2-Chloro4,5-difluorobenzoyl)-3-(2-methoxy-5-nitrophenyl)urea

Participants

Reaction Steps

1 g (5.9 mmol) of 2-methoxy-5-nitroaniline were admixed with 1.3 g (5.9 mmol) of 2-chloro-4,5-difluorobenzoyl isocyanate from stage a in 2 ml of N-methylpyrrolidone and reacted at room temperature for one hour. The precipitate was filtered off, washed twice with 5 ml of acetonitrile each time and dried under high vacuum. 2.2 g of the desired product were obtained which were used in stage c without further purification.

Provenance & Evidence