2-arylbenzimidazolines (8), generated in situ from o-phenylenediamine (7) and the appropriate arylaldehydes, by reaction with 4-arylmethylene pyrazol-5-ones (1) or isoxazol-5-ones (2) produce the 4-arylmethyl derivatives (3) or (4) and the C,C- (5) or the C,N-linked dimers. The reaction was rationalised on the basis of the role of 2-arylbenzimidazoline as a reducing agent and proceeds by a non-chain, free radical process involving one-electron transfer.

C,C- and C,N-linked Dimers and 4-Arylmethyl derivativesfrom 4-Arylmethylene pyrazol-S-ones and isbxazol-5-oneswith 2-Arylbenzimidazolines.

RISITANO, Francesco;GRASSI, Giovanni;
1996

Abstract

2-arylbenzimidazolines (8), generated in situ from o-phenylenediamine (7) and the appropriate arylaldehydes, by reaction with 4-arylmethylene pyrazol-5-ones (1) or isoxazol-5-ones (2) produce the 4-arylmethyl derivatives (3) or (4) and the C,C- (5) or the C,N-linked dimers. The reaction was rationalised on the basis of the role of 2-arylbenzimidazoline as a reducing agent and proceeds by a non-chain, free radical process involving one-electron transfer.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/2124044
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