| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | 2-oxo-4,6,6-trimethyl-1,5,6,7-tetrahydroazepine | 23137-74-8 | C9H15NO | 153.224 |
The synthesis is described of hexahydroazepin-2-ones (caprolactams) bearing 1-4 alkyl or aryl groups at C4 and C6 by the Beckmann or Schmidt reactions on the corresponding cyclohex-2-enone. Further evidence for the mechanism of the Beckmann rearrangement of these unsaturated oximes is advanced. The central nervous system activity of the alkylated caprolactams is reported.
A series of allyloxy unsaturated tetrahydroazepinones has been prepared and their Claisen rearrangements have been investigated. The 4-allyloxy compounds (4a-e) rearranged thermally to give the 3-substituted hexahydro derivatives (9). In some cases further reaction products were obtained, particularly when higher temperatures were used. Rearrangement of the 4-propargyloxy system (4f) proved more complicated, and N-allyl-2,3,4,5-tetrahydro-1H-azepin-2-one derivatives (21a,b) were unreactive. Alkylation of the hexahydroazepine-2,4-dione system (3) with various allyl halides gave mixtures of the 3-mono-(20) and the 3,3-di-substituted (19) products. The unsaturated ethers generally showed marked muscular depression on the central nervous system of mice, while their rearrangement products were only weakly depressant.