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Note | Regular issue | Vol 45, No. 9, 1997, pp.1775-1780
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7828
Photochemical Behaviour of Halogenoheterocyclic Derivatives. The Alternative between Arylation and Dehalogenation Reactions

Maurizio D'Auria

*Dipartamento di Chimica, Universita della Basilicata, Via N. Sauro 85, 85100 Potenza, Italy

Abstract

Semiempirical calculations on the transient intermediates involved in the irradiation of halogenoheterocyclic derivatives showed that the difference between the heat of formation of the substrates and the heat of formation of the radical intermediates derived from the cleavage of the C-X bond can be a useful parameter to justify the observed chemical behaviour towards the arylation reaction or the dehalogenation reaction.