Solid-state photochemistry of crystalline pyrazolines: reliable generation and reactivity control of 1, 3-biradicals and their potential for the green chemistry synthesis of …

…, CS Vogelsberg, MA Garcia-Garibay

Index: Shiraki, Saori; Vogelsberg, Cortnie S.; Garcia-Garibay, Miguel A. Photochemical and Photobiological Sciences, 2012 , vol. 11, # 12 p. 1929 - 1937

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Citation Number: 5

Abstract

To expand on the limited number of examples that exist in the literature for the solid-state photodenitrogenation of azoalkanes, a series of crystalline 7-alkyl-2,3,7-triazabicyclo[3.3.0]oct-2-ene-6,8-diones with varying 4,4-substituents were prepared. Their photochemical behavior in solution and in the solid state was dependent on the 4,4-substitution of the 1-pyrazoline ring, with unsubstituted pyrazoline 12 giving a mixture of products both in solution and in the solid state. Diphenyl ...