反应详情

A saturated solution of HCl in EtOAc (10 mL) was added to a stirred solution of tert-butyl (1S,3S)-3-{[difluoro(4-methylphenyl)acetyl]amino}cyclopentylcarbamate (1.05 g, 2.85 mmol) in EtOAc (10 mL). After 1 h the solution was concentrated to dryness. The residue was dissolved in 1:1 CH3CN/H2O (18 mL) and loaded onto SCX ion exchange resin (10 g, 60 mL, 6.9 meq), rinsing with CH3CN (15 mL), and then eluting with EtOH/NH3 (25 mL). The eluent was concentrated to give the title compound (774 mg) as a solid: MS=252.4 (M+1-ammonia).

1. concentrationAfter 1 h the solution was concentrated to dryness
2. dissolutionThe residue was dissolved in 1:1 CH3CN/H2O (18 mL)
3. washrinsing with CH3CN (15 mL)
4. washeluting with EtOH/NH3 (25 mL)
5. concentrationThe eluent was concentrated