Hydrochloric Acid → HCID 178511555, compound

Participants

Reaction Steps

To a solution of cis-[4-(benzyloxycarbonylamino-methyl)-cyclohexyl]-carbamic acid tert-butyl ester obtained in step C of example 23 (12.9 g, 35.6 mmol) in EtOAc (129 mL) was added 4 M hydrogen chloride in EtOAc (129 mL). The reaction mixture was stirred at ambient temperature for 3 hr, filtered, washed with EtOAc, and dried under reduced pressure. The solid was dissolved in saturated aqueous NaHCO3. The aqueous layer was extracted with CHCl3 (five times), dried over MgSO4, filtered and concentrated, and dried under reduced pressure to give cis-(4-amino-cyclohexylmethyl)-carbamic acid benzyl ester (8.88 g, 95%) as a colorless oil.

Provenance & Evidence