Carbendazim → 2-(Methoxycarbonylamino)-benzimidazole-1-carboximidic acid phenyl ester

Participants

Reaction Conditions

Reaction Steps

To a suspension of 420.6 g (2.2 mole) 2-(methoxycarbonylamino)-benzimidazole in 10 ltr chloroform a solution of 274 g (2.3 moles) phenyl cyanate in 2 ltr chloroform is added in drops while stirring at 20°C. The reaction mixture is stirred for 6 hours at room temperature and then left standing overnight. The product is then filtered and the solvent removed under vacuum. The colorless, crystalline residue is treated with ether.

Provenance & Evidence