反应详情

A mixture of 2-(4-nitrobenzyl)-2H-1,2,3-benzotriazole (1.0 g), 10% palladium carbon (100 mg) and ethanol (20 ml) was stirred under a hydrogen atmosphere at room temperature for 4 hrs. Palladium carbon was removed from the reaction mixture by filtration, and the filtrate was concentrated. The residue was subjected to silica gel column chromatography to give 4-(2H-1,2,3-benzotriazol-2-ylmethyl)aniline (313 mg, 35%) as crystals from a fraction eluted with ethyl acetate-hexane (1:1, v/v). Recrystallization thereof from ethyl acetate-hexane gave colorless prism crystals. melting point: 229-230° C.

1. customPalladium carbon was removed from the reaction mixture by filtration
2. concentrationthe filtrate was concentrated