1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → tert-butyl(3aR,4S,6aS)-2-(3-methyl-2-phenylbutanoyl)octahydrocyclopenta[c]pyrrol-4-ylcarbamate

Participants

Reaction Steps

3-Methyl-2-phenylbutanoic acid (63 mg, 0.353 mmol), 1-hydroxybenzotriazole (54.1 mg, 0.353 mmol), and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (0.063 mL, 0.353 mmol) were combined in dichloromethane (5 mL). The reaction was stirred at room temperature for 20 minutes, and then tert-butyl(3aR,4S,6aS)-octahydrocyclopenta[c]pyrrol-4-ylcarbamate (80 mg, 0.353 mmol) from Step B was added. After 30 minutes, the reaction was quenched with water and extracted with dichloromethane. The combined extracts were concentrated, and the crude material purified using 10-100% ethyl acetate/hexanes to give tert-butyl(3aR,4S,6aS)-2-(3-methyl-2-phenylbutanoyl)octahydrocyclopenta[c]pyrrol-4-ylcarbamate: MS (ESI+) m/z 387 (M+H)+.

Provenance & Evidence