Methyl Acrylate → HCID 86680440, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-tert-butyl 3-methyl piperazine-1,3-dicarboxylate hydrochloride, (200 g, 0.82 mol) in methanol (1 L) was added methyl acrylate (214 g, 2.46 mol) with stirring at approximately 25° C. under N2 atmosphere, and the reaction mixture was refluxed at 70° C. for 48 hours. The volatiles were removed under reduced pressure, and the residue was partitioned between ethyl acetate (1.2 L) and water (2 L). The organic layer was separated and washed with water (1 L×2) and brine (500 mL), dried over Na2SO4, filtered and concentrated. The crude obtained was purified by column chromatography over silica gel using 30-40% ethyl acetate in petroleum ether to give the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 11.43 (s, 9H), 2.20-2.34 (m, 1H), 2.35-2.46 (m, 1H), 2.48 (t, 2H, J=7.2 Hz), 2.76-2.90 (m, 1H), 2.90-3.12 (m, 2H), 3.12-3.30 (m, 1H), 3.32 (t, 1H, J=4.5 Hz), 3.35-3.44 (m, 1H), 3.67 (s, 3H), 3.71 (s, 3H) 3.83-3.94 (m, 1H).

Provenance & Evidence