反应详情

A mixture of 4-[{N-(2-(tert-butoxycarbonylamino)-4,5-difluorobenzoyl)glycyl}aminomethyl]-1-(4-hydroxy-3-nitrobenzyl)piperidine prepared above, 10% palladium-activated carbon (45 mg), and methanol (5 mL) was stirred under a hydrogen atmosphere at room temperature for 2 h. The Pd catalyst was filtered off and the filtrate was concentrated to afford 1-(3-amino-4-hydroxybenzyl)-4-[{N-(2-(tert-butoxycarbonylamino)-4,5-difluorobenzoyl)glycyl}aminomethyl]piperidine (100 mg, 60%).

1. filtrationThe Pd catalyst was filtered off
2. concentrationthe filtrate was concentrated