2008

Fused pyrimidine derivativesR 0515 Application of the Aza-Wittig Reaction to the Synthesis of Pyrazinothienotriazol-

opyrimidinones: A New Tetracyclic Ring System. — The unknown heterocyclic ring system is prepared by a tandem aza-Wittig/nucleophilic addition/cyclization reac-tion of phosphazenes (V) with various heterocumulenes under mild conditions. — (BLANCO, G.; QUINTELA*, J. M.; PEINADOR, C.; Tetrahedron 64 (2008) 7, 1333-1344; Dep. Quim. Fundam. Ind., Fac. Cienc., Univ. La Coruna, E-15071 La Coruna, Spain; Eng.) — Bartels

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