854871-56-0Relevant academic research and scientific papers
Highly selective aldol condensation using amine-functionalized SiO2-Al2O3 mixed-oxide under solvent-free condition
Abbaspourrad, Alireza,Javad Kalbasi, Roozbeh,Zamani, Farzad
experimental part, p. 2074 - 2082 (2011/06/19)
A series of amine catalysts supported on mesoporous molecular sieves SiO2/Al2O3 with trimethoxysilylpropylamine [(CH3O)3Si(CH2)3NH2] loading varying from 3 mmol to 6 mmol were synthesized by impregnation method. The aldol condensation of various aromatic aldehydes and 1-heptanal was used to test the acid-base cooperativity of amine-functionalized SiO2/Al2O3. The effects of solvent, reaction temperature, benzaldehyde to 1-heptanal molar ratio, different supports (SiO2, Al2O3 and SiO2-Al2O3), catalyst amount and recyclability of the catalyst were investigated. Sample containing 5 mmol amine loaded showed highest benzaldehyde conversion (100%) and selectivity (97%) for jasminaldehyde.
