Liquid crystalline solvents as mechanistic probes. 14. Type II photochemistry of ketones in liquid crystalline solvents. The influence of ordered media on biradical …

DA Hrovat, JH Liu, NJ Turro…

Index: Hrovat, David A.; Liu, Jerry H.; Turro, Nicholas J.; Weiss, Richard G. Journal of the American Chemical Society, 1984 , vol. 106, # 23 p. 7033 - 7037

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Citation Number: 44

Abstract

Abstract: The Norrish type I1 photochemistry of five alkylphenones, PhCO (CH2), H (la, n= 4; lb, n= 10; IC, n= 17; Id, n= 19; le, n= 21), 10-nonadecanone (2), and 2-undecanone (3) was studied in the isotropic, smectic, and solid phases of n-butyl stearate. The ratio of elimination- to-cyclization products for ketones lc-e and 2 exhibits a strong phase dependence with a 7-8- fold increase in the smectic phase relative to the isotropic phase. The ratio of isomeric ...