Unprecedented silanol-based bifunctional HBD catalysts with tetraalkylammonium units directly incorporated into their structures were prepared from tailor-made silanols and used in the preparation of cyclic carbonates.

A Cu(I) Catalyzed Mild and General Synthesis of 1,4-Disubstituted-1,2,3-triazoles from Terminal Acetylenes and in situ Generated Alkyl Azides. -The reaction is catalyzed by cuprous cyanide, in situ generated from cupric sulfate and sodium cyanide. -(LOPEZ-RUIZ*, H.; ROJAS-LIMA, S.; DE LA CERDA-PEDRO, J. E.; AMADOR-SANCHEZ, Y. A.; CORTES-HERNANDEZ, M.; PEREZ-PEREZ, J.; Heterocycles 89 (2014) 1, 27-41, http://dx.doi.org/10.3987/COM-13-12764 ; Area Acad. Quim., Univ. Auton. Estado Hidalgo, 42184 Hidalgo, Mex.; Eng.) -H. Hoennerscheid 24-144

The molecular titanosilicate {(tBuO3)3SiO}3TiNEt2 (1) was obtained from the reaction between silanol (tBuO3)3SiOH and titanium amide Ti(NEt2)4. The reaction of 1 with alkali metal hydroxides MOH (M = Li, Na,...

No abstract