通过3-烯丙基-2-硫尿嘧啶衍生物分别与溴或氯化碘反应,制得2-溴甲基-和2-碘甲基-2,3-二氢噻唑并[3,2- a ]嘧啶-5-酮。通过噻唑并嘧啶系统的C-6处的亲电取代合成6-溴和6-硝基衍生物。结果,获得了新的2,3-二氢噻唑并[3,2 - a ]嘧啶-5-酮衍生物。还报道了从2-卤甲基-2,3-二氢噻唑并[3,2 - a ]嘧啶-5-酮中消除卤化氢。
2-iodomethyl-2,3-dihydrothiazolo[3,2-a]pyrimidin-5-ones are prepared via the reaction of 3-allyl-2-thiouracil derivatives with bromine or iodine chloride, respectively. The 6-bromo and 6-nitro derivatives are synthesized by an electrophilic substitution at C-6 of the thiazolopyrimidine system. As a result, novel 2,3-dihydrothiazolo[3,2-a]pyrimidin-5-one derivatives are obtained. Hydrogen halide elimination
通过3-烯丙基-2-硫尿嘧啶衍生物分别与溴或氯化碘反应,制得2-溴甲基-和2-碘甲基-2,3-二氢噻唑并[3,2- a ]嘧啶-5-酮。通过噻唑并嘧啶系统的C-6处的亲电取代合成6-溴和6-硝基衍生物。结果,获得了新的2,3-二氢噻唑并[3,2 - a ]嘧啶-5-酮衍生物。还报道了从2-卤甲基-2,3-二氢噻唑并[3,2 - a ]嘧啶-5-酮中消除卤化氢。