Condensação aldólica de furfural e acetona catalisada por bases orgânicas nitrogenadas: um estudo preliminar de desempenho catalítico visando a produção de bioquerosene de aviação

Abstract

The aldol condensation between furfural and acetone was studied in the presence of organic bases, such as Piperazine (PIP), 3-Aminopropyltriethoxysilane (APTES) and 1,5,7-Triazabicyclo [4.4.0] dec-5-ene (TBD), as basic catalysts. The latter base showed the highest conversion rates of furfural and high selectivity to the single-condensation product 4-(2-Furyl)-3-buten-2-on (F-Ac). These data are consistent with the greater basicity of TBD in relation to the other amines. This study was carried out aiming at the future anchoring of the bases in inorganic supports for the production of heterogeneous catalysts.

Bifunctional hybrid organosiliceous catalysts for aldol condensation – hydrogenation tandem reactions of furfural in continuous-flow reactor

“…Organocatalytic moieties and metal centers surrounded by organic moieties can be embedded in the framework, with perceptible associated reactivity. In particular, amine moieties (basic centers) can be incorporated in organosilicas and hierarchical zeolites, catalyzing the aldol condensation of aromatic aldehydes and ketones [54,55], including FF and HMF with acetone [56][57][58], and the (self)condensation of aldehydes [59,60]. Further developments encompass organic-inorganic hybrids for acid-base catalytic cascades.…”