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Org Lett. 2001 May 17;3(10):1455-8.

Oxidative cleavage of a cyclobutane pyrimidine dimer by photochemically generated nitrate radicals (no(3)*).

Author information

  • 1Institut für Organische Chemie der Christian-Albrechts-Universität zu Kiel, Olshausenstr. 40, 24098 Kiel, Germany.

Abstract

[reaction: see text] Photochemically generated nitrate radicals (NO(3)(*)) cleave the stereoisomeric N,N-dimethyl-substituted uracil cyclobutane dimers 1a-d into the monomeric uracil derivative 2 as the major reaction pathway. A preferred splitting of the syn dimers 1a,b was observed. The reaction is expected to proceed through initial one-electron oxidation with formation of an intermediate cyclobutane radical cation 11. In addition to cycloreversion, competing reaction steps of 11, which lead to the observed byproducts, are suggested.

PMID:
11388840
[PubMed - indexed for MEDLINE]
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