Journal of the American Chemical Society p. 3921 - 3924 (1985)
Update date:2022-08-17
Topics:
Adam, Waldemar
Oppenlaender, Thomas
Zang, Gerald
The high quantum yield of the direct 185-nm photolysis of cyclobutene (φs=0.71) leading to 1,3-butadiene is in accord with symmetry-allowed electrocyclic ring opening of a ?,?*-excited singlet state of cyclobutene.The formation of ethene, acetylene, and methylenecyclopropane as minor products presumably involves cyclopropylmethylene and cyclobutylidene as carbene intermediates, formed on (?,3s)-Rydberg excitation of cyclobutene.The 185-nm photolysis of bicyclo<1.1.0>butane resembles that of the homologous bicyclo
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