Triethylamine → HCID 20300022, compound

Participants

Reaction Steps

In dichloromethane (70 ml) are added 1-hydroxy-1,2,3-benzotriazole (3.4 g) and further triethylamine (3.7 ml). To the solution is added dropwise a solution of 2,4,6-trimethylbenzenesulfonyl chloride (4.5 g) is dichloromethane (20 ml) at room temperature, and the mixture is stirred for 1 hour. The reaction mixture is washed with water and dried over anhydrous magnesium sulfate, and the solvent is distilled off. The resulting residue is washed with ethyl acetate-n-hexane (1:1; 50 ml) and dried to give colorless crystals of 1-(2,4,6-trimethylbenzenesulfonyloxy)-1,2,3-benzotriazole (5.5 g), melting point: 128°-130° C. The product is recrystallized from dichloromethane-n-hexane to give colorless prisms, melting point: 130°-131° C.

Provenance & Evidence