RT info:eu-repo/semantics/article T1 Synthesis of new conjugated mesomeric betaines from alkoxycarbonylazinium salts A1 Valenciano Martínez, Jesús A1 Cuadro Palacios, Ana María A1 Vaquero López, Juan J. A1 García Navío, José Luis A1 Álvarez-Builla Gómez, Julio A1 Gómez Sal, Pilar A1 Martín Alonso, Avelino K1 Conjugated mesomeric betaines K1 Alkoxycarbonylazinium salts K1 Ciencia K1 Química orgánica K1 Science K1 Chemistry, organic AB A new series of conjugated mesomeric betaines have been synthesized from the reaction of various aminoheterocycles with 2-methylthio-4-oxo-3-phenylpyrido[2,1-φ][1,2,4]triazinium iodide, itself prepared from 2-ethoxycarbonylpyridinium N-aminide. Some of the heterobetaines and salts obtained have been studied by 1H-NMR, and their structures have been confirmed by X-ray analysis. The crystal structures reveal unexpected complementary stabilizing interactions between some betaines and their salts. PB Elsevier SN 0040-4020 YR 1996 FD 1996 LK http://hdl.handle.net/10017/4195 UL http://hdl.handle.net/10017/4195 LA eng NO We wish to express our thanks to the Comisió Interdepartamental de Reçerca i Innovació Tecnológica (CIRIT) for financial support (Project QFN94-4619) and to the Ministerio de Educación y Ciencia for a grant to one of us (JVM). DS MINDS@UW RD 19-abr-2024