作者:Stojan Stavber、Marko Zupan
DOI:10.1016/s0040-4020(01)88400-3
日期:1990.1
3-dimethyl-5-halo substituted uracil derivatives reacted with CsSO4F under mild reaction conditions. Reactions carried out in an acetonitrile/water mixture or in a wide range of alcohols (methanol, ethanol, isopropanol and tert.butanol) resulted in the regioselective formation of the 5-fluoro-6-hydroxy or 5-fluoro-6-alkoxy-1,3-dimethyl-5,6-dihydrouracil derivatives, respectively, while the stereochemistry
1,3-二甲基和1,3-二甲基-5-卤代尿嘧啶衍生物在温和的反应条件下与CsSO 4 F反应。在乙腈/水混合物或多种醇(甲醇,乙醇,异丙醇和叔丁醇)中进行的反应会导致区域选择性形成5-氟-6-羟基或5-氟-6-烷氧基- 1,3-二甲基-5,6-二氢尿嘧啶衍生物,而反应的立体化学是强烈同位的。尿嘧啶转化为5-氟尿嘧啶,尿苷转化为5-氟尿苷,而巴比妥酸与作为溶剂的乙腈中的CsSO 4 F反应生成5,5-二氟巴比妥酸。