Ionic liquids grafted onto graphene oxide as a new multifunctional heterogeneous catalyst and its application in the one-pot multi-component synthesis of hexahydroquinolines

TY - JOUR

T1 - Ionic liquids grafted onto graphene oxide as a new multifunctional heterogeneous catalyst and its application in the one-pot multi-component synthesis of hexahydroquinolines

AU - Sobhani, Sara

AU - Zarifi, Farzaneh

AU - Skibsted, Jorgen

PY - 2017/7/21

Y1 - 2017/7/21

N2 - In this paper, tris(hydroxymethyl) methylene ammonium acetate supported on GO as a new multifunctional heterogeneous catalyst was synthesized. After its characterization by different techniques such as FT-IR, TEM, FESEM, EDS, XPS, solid-state MAS NMR and elemental analysis, it was used as an efficient catalyst for the synthesis of hexahydroquinolines (HHQs) via a one-pot multi-component reaction. Different HHQs were synthesized in the presence of this heterogeneous metal-free catalyst in good to high yields at room temperature under solvent-free conditions. The catalyst was easily separated and reused at least five times without significant loss of activity. The acidic nature of GO improved the catalytic activity of the supported ILs and also provided heterogeneity to the ILs. This is the first report for the synthesis of HHQs in the presence of a multifunctional heterogeneous catalyst.

AB - In this paper, tris(hydroxymethyl) methylene ammonium acetate supported on GO as a new multifunctional heterogeneous catalyst was synthesized. After its characterization by different techniques such as FT-IR, TEM, FESEM, EDS, XPS, solid-state MAS NMR and elemental analysis, it was used as an efficient catalyst for the synthesis of hexahydroquinolines (HHQs) via a one-pot multi-component reaction. Different HHQs were synthesized in the presence of this heterogeneous metal-free catalyst in good to high yields at room temperature under solvent-free conditions. The catalyst was easily separated and reused at least five times without significant loss of activity. The acidic nature of GO improved the catalytic activity of the supported ILs and also provided heterogeneity to the ILs. This is the first report for the synthesis of HHQs in the presence of a multifunctional heterogeneous catalyst.

KW - BASE BIFUNCTIONAL CATALYST

KW - POLYHYDROQUINOLINE DERIVATIVES

KW - ORGANIC TRANSFORMATIONS

KW - EFFICIENT

KW - ACID

KW - NANOPARTICLES

KW - NANOCATALYST

KW - CONDENSATION

KW - ALCOHOLS

KW - AMINES

U2 - 10.1039/c7nj00063d

DO - 10.1039/c7nj00063d

M3 - Journal article

SN - 1144-0546

VL - 41

SP - 6219

EP - 6225

JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 14

ER -