反应详情

2-Methylthio-4-(3-chloro-4-methoxybenzylamino)-5-(2-pyridylmethoxycarbonyl]pyrimidine (prepared in Example 81) 0.1500 g is treated with m-chloroperbenzoic acid (80%) 78.9 mg at 0° C. for 15 minutes. Piperazine 0.2398 g is added thereto. The reaction mixture is treated in the same manner as Example 82-(1). The resulting residue is purified with silica gel chromatography (solvent; ethyl acetate sole—ethyl acetate:methanol=1:1) and recrystallized from ethyl acetate: isopropyl ether (1:1) to give 2-(1-pyperazinyl)-4-(3-chloro-4-methoxybenzylamino)-5-(2-pyridylmethoxycarbonyl)pyrimidine as a colorless powder, 75.1 mg. mp 101–103° C.

1. additionThe reaction mixture is treated in the same manner as Example 82-(1)
2. customThe resulting residue is purified with silica gel chromatography (solvent; ethyl acetate sole—ethyl acetate:methanol=1:1)
3. customrecrystallized from ethyl acetate: isopropyl ether (1:1)