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- W2110207186 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-halobenzyl)isoquinolinium salts 3 appear not to undergo photocyclization. N-Benzyl-2-chloropyridinium salts 1c is more reactive than N-(2-chlorobenzyl)pyridinium salt 1a in the photocyclization. N-(2-Chlorobenzyl)-2-chloropyridinium salt 1d is three times more reactive than 1c. A mechanism of π-complex formation of the halogen moiety of the pyridinium ring with the phenyl ring is suggested for the reactive pyridinium salt. The triplet energy of the isoquinolinium salts 3 is tool low to photocyclize." @default.
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- W2110207186 date "2010-08-22" @default.
- W2110207186 modified "2023-09-26" @default.
- W2110207186 title "ChemInform Abstract: Intramolecular Photocyclization of N-((2-Haloaryl)methyl)pyridinium and N-(Arylmethyl)-2-halopyridinium Salts." @default.
- W2110207186 cites W2949740699 @default.
- W2110207186 doi "https://doi.org/10.1002/chin.199147169" @default.
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