The phtoaddition reaction of 9,10-phenanthrenequinone (1) with several alicyclic olefins (6) has been investigated. In addition to the expected products, dihydrodioxin(2) and keto oxetane (3), the hydroxydihydrofuran derivative (4, 5) were found. Product distribution was shown to be deeply dependent on the structure of the olefins. Product 4 has been shown to be produced via the photorearrangement of 3.
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Maruyama et al. (1978) studied this question.
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