Diethyl 2-(benzo[d]thiazol-2-yl)malonate → HCID 178451809, 화합물

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A mixture of tert-butyl 4-carbamimidoylpiperidine-1-carboxylate (35 g, 153.98 mmol, 1.00 equiv) and 1,3-diethyl 2-(1,3-benzothiazol-2-yl)propanedioate (49.7 g, 169.43 mmol, 1.10 equiv) in toluene (500 ml) was heated overnight at 120° C. in an oil bath under nitrogen. After cooled to room temperature, the solid was collected by filtration. 45 g of tert-butyl 4-[5-(1,3-benzothiazol-2-yl)-4,6-dihydroxypyrimidin-2-yl]piperidine-1-carboxylate was obtained as a light yellow solid. MS m/z [M+H]+ (ESI): 429.

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