Ethyl 4-amino-1-piperidinecarboxylate → 4-[4-Amino-5-(2-methoxybenzoyl)pyrimidin-2-ylamino]piperidine-1-carboxylic Acid Ethyl Ester

Participants

Reaction Steps

A suspension of (4-amino-2-ethanesulfonylpyrimidin-5-yl)-(2-methoxyphenyl)-methanone (20.0 mg, 0.0650 mmol, Example 6) and ethyl 4-amino-1-piperidinecarboxylate (15.1 mg, 0.0876 mmol, Aldrich) in isopropanol (2.5 mL) was placed in a sealed tube and heated at ˜100–110° C. under microwave conditions for ˜1 hour and the resulting mixture was evaporated in vacuo. The crude product was purified on silica gel with 95:5 of dichloromethane/methanol to give 4-[4-amino-5-(2-methoxy-benzoyl)-pyrimidin-2-ylamino]-piperidine-1-carboxylic acid ethyl ester as a light yellow solid (22.1 mg, 89% yield). HRMS, observed: 400.1984; Calcd for (M+H)+: 400.1980.

Provenance & Evidence