- UV-LASER PHOTOCHEMISTRY: NITROGEN EXTRUSION FROM THE AZOALKANE 4,5-DIAZATRICYCLO3,4>DEC-4-ENE. LIFETIME DETERMINATION OF BICYCLOOCTA-2,5-DIYL BY DIOXYGEN TRAPPING.
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The triplet lifetime of bicycloocta-2,5-diyl (5), generated by sensitized laser photolysis of 4,5-diazatwist-4-ene (6), was determined by dioxygen trapping.Therewith it constitutes the first localized, bicyclic triplet 1,4-diradical that could be t
- Adam, Waldemar,Grabowski, Sven
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- HYDROGENOLYSIS OF CUBANE
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On catalytic hydrogenation over Pd-C under normal conditions cubane (10) takes up 3 mol of hydrogen in a few hours.Bicyclooctane (13) is formed as the main product, and tetracyclo2.5.03.8>octane (11, secocubane) and tricyclo2.5>octane (12, nortwistbrendane) have been identified as intermediates.The hydrogenolysis of dimethyl 1,4-cubane dicarboxylate, as well as cuneane derivatives, have also been studied.Results are discussed in terms of strain relief calculated by the molecular mechanics method for cubane-like structures.
- Stober, Reinhard,Musso, Hans,Osawa, Eiji
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p. 1757 - 1762
(2007/10/02)
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