Heterocyclizations with Tosylmethyl Isocyanide Derivatives. A New Approach to Substituted Azolopyrimidines
作者:Alejandro Baeza、Javier Mendiola、Carolina Burgos、Julio Alvarez-Builla、Juan J. Vaquero
DOI:10.1021/jo050029r
日期:2005.6.1
An efficient synthesis of substituted azolopyrimidines such as pyrido[3‘,2‘:4,5]pyrrolo[1,2-c]pyrimidines, pyrimido[1,6-a]indoles, benzo[4,5]imidazo-[1,2-c]pyrimidines, an imidazo[1,2-c]pyrimidine, and pyrazolo[1,5-c]pyrimidines is described. The method involves the reaction of N-protected bromomethylazoles and tosylmethyl isocyanide (TosMIC) derivatives in nonanhydrous media. The study of the reaction
高效合成取代的吡唑并嘧啶,例如吡啶并[3',2':4,5]吡咯并[1,2- c ]嘧啶,嘧啶并[1,6- a ]吲哚,苯并[4,5]咪唑并[1]描述了,2- c ]嘧啶,咪唑并[1,2- c ]嘧啶和吡唑并[1,5- c ]嘧啶。该方法涉及在无水介质中N保护的溴甲基唑与甲苯磺酰基甲基异氰化物(TosMIC)衍生物的反应。对反应条件的研究表明,该方法仅在使用苄基三乙基氯化铵作为催化剂的相转移条件下(CH 2 Cl 2 /30%NaOH水溶液)成功。