Biradical reversion in the intramolecular photochemistry of carbonyl-substituted 1, 5-hexadienes

C Schroder, S Wolff, WC Agosta

Index: Schroeder, Clemens; Wolff, Steven; Agosta, William C. Journal of the American Chemical Society, 1987 , vol. 109, # 18 p. 5491 - 5497

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Citation Number: 10

Abstract

Abstract: We have studied the intramolecular photochemistry of dienones lOa, b-l2a, b. The initial rate of loss of alkene stereochemistry in recovered starting ketone provides a measure of the rate of reversion (k,) of the biradical intermediate (Scheme I) relative to its conversion to products (kp). Results are presented in Table I along with quantum yields for products (ap) and for reversion (ar) and the fraction of absorbed light not accounted for by these ...