頁籤選單縮合
題名 | Thermal Reactions of N-Acyl Phenylcyclobutylimines= |
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作者 | 吳培琳; 陳昌甫; Wu, Pei-lin; Chen, Chang-fu; |
期刊 | Journal of the Chinese Chemical Society |
出版日期 | 19980200 |
卷期 | 45:1 1998.02[民87.02] |
頁次 | 頁183-188 |
分類號 | 340 |
語文 | eng |
關鍵詞 | Flash vacuum thermolysis; Cycloreversion; Hydrogen shift; Ring expansion; N-acyl cyclobutylimine; 1,2,3,4-tetrahydropyridine; Aminomethylenecyclobutane; |
英文摘要 | Flash vacuum thermolysis of the parent and phenyl substituted N-acyl cyclobutylimines 3 was under investigation. At 500 ℃ and 0.01 torr, 3d with phenyl group on C-1 and 3e with phenyl group on C-2 of cyclobutane ring underwent ring expansion processes to produce N-acyl 1,2,3,4-tetrahydropyridines 8d and 8e. Meanwhile the parent N-acyl cyclobutylimines 3a together with the phenyl group on C-3 (3c) and imine carbon (3b) proceeded a hydrogen shift reaction to afford N-acylaminomethylenecyclobutanes 8a-c. In addition, cycloreversion competed with ring expansion or hydrogen shift in all cases. |
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