反应详情

To a solution of Terephthalic acid monomethyl ester (5.4 g, 30 mmol) and 2-chloro-4,6-dimethoxy-[1,3,5]triazine (7.9 g, 45 mmol) in THF (300 mL) is added N-methyl morpholine (4.95 mL, 45 mmol), the mixture is stirred at room temperature overnight. Additional N-methyl morpholine (4.95 mL, 45 mmol) is added, followed by the addition of O, N-dimethyl-hydroxylamine HCl salt (3.51 g, 45 mmol). The reaction mixture is stirred overnight, and filtered through celite. The filtrate was concentrated and purified by column chromatography on silica gel (hexane/ethyl acetate) giving the title compound (6.8 g).

1. stirringThe reaction mixture is stirred overnight
2. filtrationfiltered through celite
3. concentrationThe filtrate was concentrated
4. custompurified by column chromatography on silica gel (hexane/ethyl acetate)