Spectroscopic characterization by laser flash photolysis of electrophilic intermediates derived from 4-aminostilbenes. Stilbene “nitrenium” ions and quinone methide …

…, AP Dicks, KJ Kayser, RA McClelland

Index: Bose, Rohit; Ahmad, Abid R.; Dicks, Andrew P.; Novak, Michael; Kayser, Kelly J.; McClelland, Robert A. Journal of the Chemical Society. Perkin Transactions 2, 1999 , # 8 p. 1591 - 1599

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Citation Number: 29

Abstract

This paper reports the observation in water–acetonitrile solutions of two electrophiles derived from 4-amino-and 4-acetylaminostilbene carcinogens—the 'nitrenium'ion ArCHCHC6H4–N+ R and the quinone methide imine ArCHOH–CHC6H4NR. One example where R= acetyl (Ar= phenyl) is included, with the photochemical precursor N-(sulfonatooxy)- N-acetyl-4-aminostilbene (1). There are six examples where R= H, with substituents in Ar ...