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- W1977952015 abstract "Abstract This study deals with the photorearrangements of a few bridgehead-disubstituted dibenzobarrelene, i.e. dimethyl-9-hydroxymethyl-10-methyl-9,10-dihydro-9,10-ethenoanthracene-11,12-dicarboxylate (1) and the dibenzobarrelene lactone derivatives (10a,b). Irradiation of 1 in benzene gives a 77% yield of a dibenzocyclooctatetraene (8) with C2 symmetry with respect to its substituents. In contrast, the photolysis of 10a yields the dibenzosemibullvalene (15a) in nearly quantitative yield. Similarly, the dibenzobarrelene lactone (10b) undergoes facile photoisomerization to the corresponding dibenzosemibullvalene (15b) in 92% yield. The structures of the photoproducts 8 and 15a have been unambiguously established through X-ray crystallographic analysis." @default.
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- W1977952015 date "1995-02-01" @default.
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- W1977952015 title "Photorearrangements of bridgehead-disubstituted dibenzobarrelene esters and lactones" @default.
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- W1977952015 doi "https://doi.org/10.1016/1010-6030(94)03955-t" @default.
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