1,3,4-Thiadiazol-2-amine → HCID 70085747, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (2S)-6-benzyloxycarbonylamino-2-tert-butoxycarbonylaminohexanoic acid (1.09 g, 2.87 mmol) in dichloromethane (5 mL) is added 1,1-carbonyldiimidazole (0.47 g, 2.87 mmol). The resulting solution is stirred at 25° C. for 1 h and 2-amino-1,3,4-thiadiazole (0.29 g, 2.87 mmol) is added and the reaction is stirred for an additional 18 h. The mixture is diluted with dichloromethane (60 mL) and washed with 1 M aqueous sodium carbonate solution. The organic layer is dried over anhydrous magnesium sulfate, concentrated in vacuo, and purified by silica gel chromatography (elution with 1:1 EtOAc-hexanes) to provide (2S)-6-benzyloxycarbonylamino-2-tert-butoxycarbonylaminohexanoic acid 1,3,4-thiadiazol-2-ylamide as a foam (0.81 g, 61% yield).

Provenance & Evidence