Organic amine grafting on mesoporous silica as a hybrid catalyst for heterogeneous three-component one-pot reaction
作者:Kenichi Komura、Yuta Mishima、Mamoru Koketsu
DOI:10.1016/j.apcata.2012.08.009
日期:2012.11
organic–inorganic hybridcatalyst was prepared by immobilizing 3-methylaminopropyl moiety onto mesoporous silica, MCM-41, and applied for solidbasecatalyst of three-component one-pot reaction, i.e. Knoevenagel condensation of aldehyde with the active methylene compound to yield an electron deficient alkene which is subjective to be reacted with nitromethane by Michaeladdition to form tri-substituted
Reduced graphene oxide supported piperazine in aminocatalysis
作者:Eduardo Rodrigo、Beatriz García Alcubilla、Raquel Sainz、J. L. García Fierro、Rafael Ferritto、M. Belén Cid
DOI:10.1039/c4cc02701a
日期:——
Reduced graphene oxide (rGO) has been used as a support for piperazine to provide a heterogeneous bifunctional organocatalyst (rGO-NH) that is able to efficiently promote vintage organic transformations such as Knoevenagel, Michael and aldol reactions. The obtained results suggest a significant role of the support in the course of these reactions.