- 作者: 陳登嶽;洪集英
- 作者服務機構: 國立清華大學化學系
- 中文摘要:
3-苯基雪梨酮和反丁烯二酸二乙酯,順丁烯二酸二乙酯,反丁烯二氰,苯乙烯醚及α-甲基丙烯甲酯行環化加成反
應,可得完全芳香化的?唑衍生物:4-乙酯基-1-苯基?唑 (26.6%; 42.7%),4-氰基-1-苯基?唑(10.4%)l-苯基?
唑(88.1 %)及3-甲基-1-苯基?唑(58.1%)。但是偶氮二甲酸二乙脂,偶氮苯及環已酮在同條件下不產生環化加成產
物。
k - 英文摘要: Cycloaddition of 3-phenylsydnone with diethyl fumarate, diethyl maleate, fumaronitrile, phenylvinyl ether and methyl methacrylate in refluxing xylene or dioxane offered fully aromatic pyrazoles: 4-carbethoxy-1-phenylpyrazole (26.6%; 42.7%), 4-cyano-l-phenylpyrazole(10.4%), 1-phenylpyrazole(88.6%), and 3-methyl-l-phenylpyrazole (58.1%). However, reactions with diethyl azodicarboxylate,azobenzene, and cyclohexanone did not give cycloaddition products.
- 中文關鍵字: Pyrazole; cyctoaddition; sydnone
- 英文關鍵字: --