1-Carboxymethyl-5-halo-6-hydroxy-5-methyl-5,6-dihydrouracils and 1-carboxymethyl-6-hydroxy-5-methyl-5-mtro-5,6-dihydrouracils were synthesized for the first time by oxidative halogenation and nitration of 1-carboxymethyl-5-methyluracil. Dihydrouracil derivatives bearing a Br atom at position C(5) and a hydroxy group at position C(6) treated with Ac2O undergo deoxyhalogenation.

中文翻译：

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1-羧甲基-5-甲基尿嘧啶的卤化和硝化。涉及乙酸酐的嗜盐反应

首次合成了 1-Carboxymethyl-5-halo-6-hydroxy-5-methyl-5,6-dihydrouracils 和 1-carboxymethyl-6-hydroxy-5-methyl-5-mtro-5,6-dihydrouracils 1-羧甲基-5-甲基尿嘧啶的氧化卤化和硝化。二氢尿嘧啶衍生物在 C(5) 位置带有一个 Br 原子，在 C(6) 位置带有一个羟基，经过 Ac2O 处理后会发生脱氧卤化。