Canadian journal of chemistry

Cyclobutene photochemistry. Involvement of carbene intermediates in the photochemistry of alkylcyclobutenes

KB Clark, WJ Leigh

Index: Clark, K. Brady; Leigh, William J. Canadian Journal of Chemistry, 1988 , vol. 66, p. 1571 - 1578

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Citation Number: 13

Abstract

The photochemistry of 1, 3, 3, 4-and 1, 3, 4, 4-tetramethylcyclobutene has been investigated in pentane solution with monochromatic far ultraviolet (185, 193, and 214 nm) light sources, as well as in methanol solution with 214-nm excitation. Photolysis of each of the two isomeric cyclobutene derivatives results in competitive electrocyclic ring opening (yielding mixtures of stereoisomeric dienes in each case), fragmentation to yield propyne and ...

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