3,4-Dichlorophenyl isocyanate → HCID 86736253, compound

Participants

Reaction Steps

51.2 g (0.2 moles) 2-(5-nitro-furfurylidene)-amino-benzimidazole are stirred in a mixture of 120 ml of chloroform and 80 ml of dimethylformamide, whereupon 37.6 g (0.2 moles) of powdered 3.4-dichlorophenyl-isocyanate are added. The crystalline reaction mixture is stirred at room temperature for 7 hours while a mixture of 40 ml of dimethylformamide and 60 ml of chloroform are added. The precipitated crystals are filtered off, washed with 100 ml of chloroform and dried in vacuo at 40° C. to 60° C. Thus 70 g of 1-(3',4'-dichlorophenyl-carbamoyl)-2-(5-nitro-furfurylidene)-amino-benzimidazole are obtained. Mp.: 202°-204° C.

Provenance & Evidence