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概要 |
The photochemical cycloaddition of p-tropoquinone bisacetal to electron-rich olefins mainly gave oxetanes; an alkylidenecycloheptadienone derivative from cyclohexene and a hemiacetal from cyclopentene... were explained by subsequent fragmentation of the oxetane. The reaction with 2, 3-trimethoxycyclohept-6-ene-1, 5-dione and 2, 3-dimethyl-2-butene gave cis- and trans-fused cyclobutane derivatives and an ene product. These results were different from those of the photochemical reactions of p-tropoquinone and its monoacetal.続きを見る
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