Phototransposition chemistry of 1-phenylpyrazole. Experimental and computational studies

…, RE Connors, DS Burns, EM Kurzweil

Index: Pavlik, James W.; Connors, Robert E.; Burns, Douglas S.; Kurzweil, Edyth M. Journal of the American Chemical Society, 1993 , vol. 115, # 17 p. 7645 - 7652

Full Text: HTML

Citation Number: 22

Abstract

Abstract: Photophysical and photochemical properties of 1-phenylpyrazole and 3-, 4-, and 5- methyl-1-phenylpyrazoles have been investigated. INDO/S calculations agree with experimental measurements which show that the SI and TI states of these compounds are T, T* in character. Upon SO-Sl (a, n*) excitation, these 1-phenylpyrazoles undergo phototransposition via a Pq permutation pathway. This process is consistent with a ...