Ba(OH)2 as the catalyst in organic reactions
1987; Elsevier BV; Volume: 115; Issue: 2 Linguagem: Inglês
10.1016/0021-9797(87)90070-1
ISSN1095-7103
AutoresJose-Vicente Sinisterra Gago, Andrés R. Alcántara, Jose-Maria Marinas Rubio,
Tópico(s)Organophosphorus compounds synthesis
ResumoThe Wittig-Horner reaction is carried out using three different activated barium hydroxide catalysts: C-O, C-200, and C-300. These catalysts have different microcrystalline structures and basic and redox properties. The influence of these properties on acrylate yields is discussed. The process is a surface reaction and not a true phase transfer catalytic process. This is proved by the IR spectra of the adsorbed ylids on the surface of the catalyst and by the polymer-supported reagant. A mechanism is proposed for the process catalyzed in the heterogeneous phase.
Referência(s)