A novel and very elegant method is proposed for the preparation of N.sub.1 -(2-tetrahydrofuryl)-5-substituted or -unsubstituted uracil, especially, N.sub.1 -(2-tetrahydrofuryl)-5-fluorouracil, by the reaction of the corresponding 5-substituted uracil compound with 2,3-dihydrofuran. The reaction is performed in the presence of a chlorosilane compound, e.g. dimethyldichlorosilane, and a catalytic amount of an organic amine compound and can proceed very rapidly without disadvantageous side reactions to give the objective compound with high purity in a high yield.
提出了一种新颖而非常优雅的方法,用于制备N.sub.1-(2-
四氢呋喃基)-5-取代或未取代尿
嘧啶,特别是N.sub.1-(2-
四氢呋喃基)-5-
氟尿
嘧啶,通过相应的5-取代尿
嘧啶化合物与
2,3-二氢呋喃的反应。在
氯硅烷化合物(例如二甲基二
氯硅烷)和有机胺化合物的催化下进行反应,可以非常迅速地进行,没有不利的副反应,从而以高纯度和高产率得到目标化合物。