Methyl 2-[bis(acetyl)ethenyl]aminopropenoate in the synthesis of heterocyclic systems
作者:Lovro Selič、Branko Stanovnik
DOI:10.1002/jhet.5570340317
日期:1997.5
Methyl 2-[bis(acetyl)ethenyl]aminopropenoate (4) was prepared in 3 steps from acetylacetone (1) via 4-(N,N-dimethylamino)-3-acetylbut-3-en-2-one (2) and methyl N-[2,2-bis(acetyl)ethenyl]glycinate (3). Compound 4 reacts with N- and C-nucleophiles to give fused heterocyclic systems. Derivatives of pyrido[1,2-a]pyrimidones 14–16 and thiazolo[3,2-a]pyrimidones 17 and 18 were prepared from 2-aminopyridines
分三步,由乙酰丙酮(1)经由4-(N,N-二甲基氨基)-3-乙酰丁-3-烯-2-酮(2)和2- [双(乙酰基乙烯基)氨基丙酸甲酯(4)制备N- [2,2-双(乙酰基)乙烯基]甘氨酸甲酯(3)。化合物4与N-和C-亲核试剂反应生成稠合的杂环系统。分别由2-氨基吡啶和2-氨基噻唑制备吡啶并[1,2- a ]嘧啶酮14-16和噻唑并[3,2- a ]嘧啶酮17和18的衍生物。用C制备了吡啶并[1,2- a ]-吡啶酮19和2 H -1-苯并吡喃-2-酮20-22的-亲核试剂衍生物。