Intramolecular photocyclization of N??[(2??haloaryl) methyl] pyridinium and n??(arylmethyl)??2??halopyridinium salts

YT Park, CH Joo, CD Choi…

Index: Park, Y.-T.; Joo, C.-H.; Choi, C.-D.; Park, K.-S. Journal of Heterocyclic Chemistry, 1991 , vol. 28, # 4 p. 1083 - 1089

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Citation Number: 8

Abstract

Abstract Various N-[(2-haloaryl) methyl] pyridinium, N-(arylmethyl)-2-halopyridinium and N- (2-halobenzyl) iso-quinolinium salts have been synthesized and their intramolecular photocyclization reactions studied. Upon irradiation the aqueous solution of N-[(2-haloaryl) methyl] pyridinium, and N-arylmethyl-2-halopyridinium salts 1, 2 were cyclized to give isoindolium salts. In contrast to the pyridinium salts 1, 2, the aqueous solution of N-(2- ...