反应详情

To a solution of trans-4-benzylhexahydro-2H-furo[3,4-b][1,4]oxazine (600 mg, 2.73 mmol) in MeOH (10 mL) at room temperature was added Pd(OH)2/C (250 mg). Hydrogen was purged through the reaction for 10 minutes and then the reaction was stirred at room temperature under 1 atm of hydrogen for 2 hours. Concentrated HCl (0.3 mL) was added, and the solution was stirred for 15 minutes. The reaction was filtered through celite, and the solvent was evaporated to afford (trans)-hexahydro-2H-furo[3,4-b][1,4]oxazine (HCl salt, racemic). 1H NMR (400 MHz, CD3OD) δ 3.72-4.29 (m, 6H), 3.41-3.69 (m, 3H), 3.23-3.35 (m, 1H).

1. customHydrogen was purged through the reaction for 10 minutes
2. additionConcentrated HCl (0.3 mL) was added
3. stirringthe solution was stirred for 15 minutes
4. filtrationThe reaction was filtered through celite
5. customthe solvent was evaporated