Synthesis and conversion of 6-fluoro derivatives of 1,3,4-thiadiazolo-[3,2-a]pyrimidine
作者:Muhamadsho A. Kukaniev、Cyril Párkányi
DOI:10.1002/jhet.767
日期:2011.11
2‐halo‐substituted derivatives of 7‐methyl‐6‐fluoro‐1,3,4‐thiadiazolo[3,2‐a]pyrimidin‐6‐one (3) were prepared by reaction of 2‐substituted 5‐amino‐1,3,4‐thiadiazoles (1) and ethyl 2‐fluoroacetoacetate (2) in polyphosphoric acid. A convenient procedure was developed for the synthesis of new 2‐amino derivatives of 2‐R‐7‐methyl‐6‐fluoro‐1,3,4‐thiadiazolo[3,2‐a]pyrimidin‐6‐one (5). J. Heterocyclic Chem.,
制备了7-甲基-6-氟-1,3,4-噻二唑[3,2 - a ]嘧啶-6-6的2-烷基,2-芳基和2-卤代衍生物(3)通过2-取代的5-氨基-1,3,4-噻二唑(1)和2-氟乙酰乙酸乙酯(2)在多磷酸中的反应。已开发了一种方便的程序,用于合成新的2‐R‐7‐甲基‐6‐氟‐1,3,4-噻二唑[3,2 ‐ a ]嘧啶-6‐1的2-氨基衍生物(5)。J.杂环化学。(2011)。