中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (1S,2R,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-3-en-2-yl acetate | 74036-20-7 | C12H18O2 | 194.274 |
[1S-(1alpha,2alpha,5alpha)]-4,6,6-三甲基双环[3.1.1]庚-3-烯-2-醇 | trans-verbenol | 1820-09-3 | C10H16O | 152.236 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
[1S-(1alpha,2alpha,5alpha)]-4,6,6-三甲基双环[3.1.1]庚-3-烯-2-醇 | trans-verbenol | 1820-09-3 | C10H16O | 152.236 |
[1R-(1alpha,2alpha,5alpha)]-4,6,6-三甲基双环[3.1.1]庚-3-烯-2-醇 | (+)-trans-verbenol | 22339-08-8 | C10H16O | 152.236 |
—— | (+)-cis-3-pinen-2-ol | 73522-43-7 | C10H16O | 152.236 |
The products (predominantly unsaturated aldehydes) from photolysis in methanol of a series of 6,6-dimethylbicyclo[3.1.1]heptan-2-ones are reported. These results are rationalized on the basis of stereochemical interactions and the apparent preference for cleavage to occur adjacent to the less highly substituted α-carbon but more stable alkyl radical. It is concluded that the photochemical behavior of α-cyclobutyl ketones displays a closer parallel to the α-cyclopropyl ketones than previously recognized and that cleavage will occur preferentially on the side of the carbonyl group remote from the four-membered ring whenever possible. The synthetic steps involved in the preparation of the ketones from 'pinene' precursors are described.
The synthesis of verbenyl acetate (