ChemInform Abstract: Reactivity of Pyridines Bearing EWG with Bis‐(TMS)ketene Acetals. Substituent‐Induced Lactonization Reaction.

Abstract

Reactivity of Pyridines Bearing EWG with Bis-(TMS)ketene Acetals. Substituent-Induced Lactonization Reaction. -Several new dihydropyridine carboxylic acids are prepared. An unexpected lactonization is achieved by silica or NBS. -(RIVERA-HERNANDEZ*, A.; CHANS, G. M.; RUDLER, H.; LOPEZ CORTES, J. G.; TOSCANO, R. A.; ALVAREZ-TOLEDANO, C.; Tetrahedron 70 (2014) 10, 1861-1871, http://dx.