Benzoyl isothiocyanate → tert-Butyl 3-(3-benzoylthioureido)propylcarbamate

Participants

Reaction Steps

To an ice cold solution of tert-butyl 3-aminopropylcarbamate (3.56 g, 20.43 mmol) in CH2Cl2 (80 mL) is added dropwise benzoyl isothiocyanate (3.50 g, 21.45 mmol). The reaction mixture is stirred at room temp for 2 h after which the solvent is removed in vacuo. The resulting residue is partitioned with CH2Cl2 and water, the water layer is extracted with CH2Cl2, the organic layers are combined, washed with brine, dried over Na2SO4, filtered and evaporated to dryness to give 6.89 g (quantitative yield) of the title compound. LC/MS (Condition A): ret. T=3.56 min, (M+H)+ 338.26.

Provenance & Evidence