Toluene → 2'-Nitrobiphenyl-4-yl sulfamate

Participants

Reaction Steps

A mixture composed of 215 mg of 2′-nitrobiphenyl-4-ol and 1 ml of toluene was cooled with ice, and 148 mg of chlorosulfonyl isocyanate was added dropwise thereto, followed by refluxing for 17 hours. After water was added to the reaction mixture under cooling with ice, the product was extracted with ethyl acetate. The organic layer was washed with water and dried over anhydrous magnesium sulfate. After the solvent was distilled off, the resulting crude product was purified by TLC (using a 10:1 mixture of chloroform and methanol as the developing solvent) to obtain 160 mg of 2′-nitrobiphenyl-4-yl sulfamate.

Provenance & Evidence