摘要 据报道,通过三氟甲磺酸酐介导的酰胺活化和分子内环化的3-氨基咪唑并[1,2- a ]嘧啶的区域选择性合成。添加的吡啶碱的性质允许从简单的普通前体获得两种区域异构体。该方法容许一定范围的官能团,并提供对新型杂环支架的访问。 据报道,通过三氟甲磺酸酐介导的酰胺活化和分子内环化的3-氨基咪唑并[1,2- a ]嘧啶的区域选择性合成。添加的吡啶碱的性质允许从简单的普通前体获得两种区域异构体。该方法容许一定范围的官能团,并提供对新型杂环支架的访问。
Conjugateaddition reaction of various nucleophiles across the vinyl group of 2-chloro-4-vinylpyrimidine, 2-chloro-4-(1-phenylvinyl)pyrimidine and 2-chloro-4-vinyl-quinazoline provides the corresponding 2-chloro-4-(2-substituted ethyl)pyrimidines and 2-chloro-4-(2-substituted ethyl)quinazolines. Treatment of these products, without isolation, with N-methylpiperazine results in nucleophilic displacement