Hydrochloric Acid → HCID 118115143, compound

Participants

Reaction Steps

(R)-tert-Butyl 3-aminopiperidine-1-carboxylate (1.70 g, 8.5 mmol) was mixed with p-anisic acid (1.42 g, 9.35 mmol) in 5 mL DMF and 25 mL dioxane. The mixture was stirred at RT, and to it were added DIEA (2.07 mL, 11.9 mmol) and then PyBOP (4.86 g, 9.35 mmol). The mixture was stirred at RT for 3 hours, diluted with 150 mL EtOAc, washed with water 60 mL×3, dried, concentrated, subjected to silica flash column using 0 to 20% EtOAc in DCM to isolate (R)-tert-butyl 3-(4-methoxybenzamido)piperidine-1-carboxylate (488) in quantitative yield. Compound 488 (1.86 g, 5.56 mmol) was treated with 30 mL commercial 4N HCl in dioxane at RT for 15 min, giving (R)-4-methoxy-N-(piperidin-3-yl)benzamide hydrochloride (489) in quantitative yield as a white solid.

Provenance & Evidence