Tetrahedron, cilt.64, sa.30-31, ss.7289-7294, 2008 (SCI-Expanded)
Norcaran-2,3,4,5-tetraoles were synthesized starting from methyl 1,3,5-cycloheptatriene-7-carboxylate in several steps. Norcaradiene endoperoxide is the key component; it was obtained by photooxygenation of methyl 1,3,5-cycloheptatriene-7-carboxylate. The other oxygen functionalities are introduced through epoxide ring opening and OsO4-hydroxylation reactions. © 2008 Elsevier Ltd. All rights reserved.