中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
双环[3.1.1]庚烷 | Norpinan | 286-34-0 | C7H12 | 96.1723 |
—— | 1-methyltricyclo[4.1.0.02,7]heptane | 32348-63-3 | C8H12 | 108.183 |
—— | tetracyclo<5.1.0.01,6.02,7>octane | 98577-41-4 | C8H10 | 106.167 |
Methyl-, phenyl-, p-chlorophenyl-, and p-tolyl(phenylethynyl)sulfones under photochemical or thermal initiation add to the central bicyclobutane C1–C7 bond of 1-R(H, Me, Ph)-tricyclo[4.1.0.02,7]heptanes anti-selectively, and form norpinic adducts containing a phenylethynyl group in a geminal to substituent R position, and an endo-oriented sulfonyl group in position 7. The corresponding ketones were prepared by the hydration of the anti-adducts by the method of Kucherov. The ketone with a methylsulfonyl substituent under reflux in toluene in the presence of KOH powder and the phase-transfer catalyst (TEBA-Cl) afforded the tricyclic sulfone.