2-methylthio-2-imidazoline and 2-methylthio-1,4,5,6-tetrahydro-2-pyrimidine amidated 2-chloro-3-pyridine- and 2-chloro-3-pyrazinecarbonyl chlorides. The products reacted with aromatic amines forming a series of tricyclic, linearly fused N-aryl pyrimidones. Included among these pyrimidones were 10-aryl-2,3-dihydroimidazo[1,2-a]pyrido[2,3-d]pyrimidin-5(10H)-ones, 11-aryl-2,3,4,11-tetrahydropyrido-[2,3-d]pyrimido[1,2-a]pyrimidin-6(6H)-ones, 10-aryl-2,3-dihydroimidazo[1,2-a]pyrazino[2,3-d]pyrimidin-5(10H)-ones and 11-aryl-2,3,4,11-tetrahydropyrimido-[1,2-a]pyrazino[2,3-d]pyrimidin-6(6H)-ones. 4,5,6,7-Tetrahydro-2-(mythylthio)-1H-1,3-diazepine amidated the ethyl hydrogen carbonate of 2-(phenylamino)-3-pyridinecarboxylic acid, forming 12-phenyl-2,3,4,5-tetrahydropyrido[2',3':4,5]pyrimido[1,2-a][1,3]diazepine-7(12H)-one. A single crystal X-ray analysis and an unambiguous synthesis established the structure of the linearly fused isomer 10-phenyl-2,3-dihydroimidazo[1,2-a]pyrido[2,3-d]pyrimidin-5(10H)-one.
2-甲硫基-2-咪唑啉和2-甲硫基-1,4,5,6-四氢-2-嘧啶酰化2-氯-3-吡啶和2-氯-3-吡嗪羰氯。这些产物与芳香胺反应,形成一系列三环、线性融合的N-芳基嘧啶酮。这些嘧啶酮中包括10-芳基-2,3-二氢咪唑[1,2-a]吡啶[2,3-d]嘧啶-5(10H)-酮,11-芳基-2,3,4,11-四氢吡啉[2,3-d]嘧啶[1,2-a]嘧啶-6(6H)-酮,10-芳基-2,3-二氢咪唑[1,2-a]吡嗪[2,3-d]嘧啶-5(10H)-酮和11-芳基-2,3,4,11-四氢嘧啶[1,2-a]吡嗪[2,3-d]嘧啶-6(6H)-酮。4,5,6,7-四氢-2-(甲硫基)-1H-1,3-二氮杂环己酮酰化2-(苯基氨基)-3-吡啶羧酸乙酯氢碳酸酯,形成12-苯基-2,3,4,5-四氢吡啶[2',3':4,5]嘧啶[1,2-a][1,3]二氮杂环己-7(12H)-酮。单晶X射线分析和明确的合成确定了线性融合异构体10-苯基-2,3-二氢咪唑[1,2-a]吡啶[2,3-d]嘧啶-5(10H)-酮的结构。