MCM-41-SO3H-catalyzed synthesis of highly substituted 3-amino-imidazo[1,2-a]pyridines or pyrazines via the Groebke-Blackburn-Bienaymé multicomponent reaction under grinding conditions at ambient temperature

Naeimabadi, Maryam; Javanshir, Shahrzad; Maleki, Ali; Dekamin, Mohammad G.

doi:10.24200/sci.2016.3981

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Javanshir et al [40] have reported a three-component, one-pot, Groebke-Blackburn-Bienayme reaction for the preparation of substituted 3-aminoimidazo[1,2-a]pyridines or pyrazines in the presence of nano-ordered MCM-41-SO 3 H as hybrid catalyst (Figure 3). High acid strength of Brønsted acid sites in the catalyst explained the superior behaviour of this catalyst over others like Zn-MCM-41, Fe-MCM-41, and Al-MCM-41.…”

Section: Multicomponent Reactions (Mcrs)mentioning

confidence: 99%

Functionalized MCM‐41: Versatile Catalysts for Organic Transformations

et al. 2022

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Functionalized MCM-41 constitute a group of potent hybrid catalysts for organic reactions. Their pore size is large enough to house large substrate molecules, the large bulk of surface silanol groups helps in introduction of a variety of functionalities required for the catalytic action. The current review emphasizes the broad methodology for the synthesis of these catalysts, effect of functionalization on reaction parameters, stability, efficiency, selectivity, reusability along with limitations of these catalysts to organic transformations, from a green chemistry standpoint. Some selected mechanisms of catalytic action are also highlighted. The review demonstrates that surface functionalized MCM-41 constitute innovative and need based catalyst systems that catalyze reactions like Sonogashira, Suzuki, Heck, Friedel Craft reaction, Aldol and Knoevenagel condensation etc. Several other reactions like oxidation, reduction, dehydration, esterification, epoxidation, CÀ S, CÀ N, CÀ O and SÀ S coupling as well as multicomponent synthesis of bioactive heterocycles have also been reported. It is hoped that this review will improve the understanding of scientific community on how these versatile catalysts operate and will provide opportunities to further enhance their utility for chemical industry.

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Section: Multicomponent Reactions (Mcrs)mentioning

confidence: 99%

Functionalized MCM‐41: Versatile Catalysts for Organic Transformations

et al. 2022

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] By controlling the assembly or growth processes, different types of products with various structures, morphologies, or particle sizes can be produced. 12,13,[15][16][17][18][19][20][21] Periodic mesoporous organosilicas (PMOs) were rst reported in 1999 by Inagaki, 22 Ozin, 23 and Stein. 24 They are a class of materials synthesized via a sol-gel process from an organobridged alkoxysilane in the presence of a surfactant.…”

Section: Introductionmentioning

confidence: 99%