Compounds I V (Table 1) were obtained by interaction of 6-methyluracil or 5-hydroxy-6-methylumcil with epichlorohydrin (ECI-I) in the presence of catalytic amounts of potassium carbonate in DMF at 7 0 80~ [ 4 9]. It was established that alkylation of 6-methyluracil by ECH leads to the formation, in addition to compound I, of 1-(2-hydroxy-3-chloropropyl)-6-methyluracil (I1) at a yield of 8%. The proposed
化合物IV(表1)通过6-甲基尿
嘧啶或5-羟基-6-甲基umcil与表
氯醇(
ECI-I)在
DMF中催化量的
碳酸钾存在下在7 0 80〜[ 4 9 ]的相互作用获得。已确定通过
ECH 对 6-甲基尿
嘧啶的烷基化导致除了化合物 I 之外,还以 8% 的产率形成 1-(2-羟基-3-
氯丙基)-6-甲基尿
嘧啶 (I1)。取代基的建议位置由紫外光谱数据证实:pH 1,L~n = 245 nm,Lmax = 257 nm;pH 7,~min = 245 mat,Xmax = 260 nm;pH 值 12,。L~, = 247 nm, Xm~x = 265 边缘。当 pH 值从 1 变为 12 时,在化合物 1I 的紫外光谱中观察到的吸收最大值的微小变化表明 I 位被取代。