Methyl chloroformate → HCID 66735198, compound

Participants

Reaction Steps

To a solution of methyl 2-(4-(trifluoromethoxy)benzyl)piperidine-4-carboxylate (8.19 g, 25.81 mmol) in DCM (100 mL) was added DIPEA (5.40 mL, 30.97 mmol) followed by methyl carbonochloridate (2.236 mL, 28.39 mmol). The reaction mixture was stirred at room temperature for 30 min. The solvents were evaporated and the residue partitioned between ethyl acetate and 3.8 M HCl. After phase separation the aqueous layer was extracted with ethyl acetate. The combined organic layers were dried over MgSO4 and evaporated to give a yellow oil. Dimethyl 2-(4-(trifluoromethoxy)benzyl)piperidine-1,4-dicarboxylate (9.72 g, 100%) was isolated. MS m/z 376 (M+H)+

Provenance & Evidence