Efficient synthesis of amides over Cu-Fe decorated multiwalled carbon nanotubes and mesoporous carbon catalysts was written by Hareesh, H. N.;Minchitha, K. U.;Nagaraju, N.;Kathyayini, N.. And the article was included in Journal of Nanoscience and Nanotechnology in 2020.Name: Methyl heptanoate The following contents are mentioned in the article:
A mixture of Cu (10%) and Fe (1 to 9%) was deposited on multiwalled carbon nanotubes (MWCNTs) and mesoporous carbon (MC). The catalytic activity was investigated in a reaction between carboxylic acids/esters and aromatic amines. The physico-chem. properties of the materials were characterized by different anal. techniques such as powder XRD (X-ray diffraction), BET (Brunauer-Emmett-Teller) surface area, XPS (XPS), TPD-NH3 (Thermal Desorption Spectroscopy), SEM-EDS (SEM-Energy Dispersive Spectroscopy) and TEM (Transmission Electron Microscopy). The catalytic activity was investigated in the synthesis of aliphatic and aromatic amides from aliphatic/aromatic carboxylic acids and esters with aniline/benzyl amine. The yields of the products were in the range 30 to 92% with 100% selectivity. The percentage yield of amides from esters was found to be less than that of corresponding acids. Cu along with 5% of Fe supported on MWCNTs was found to be a better catalyst than when supported on MC, with respect to the isolated yield of the products and recyclability. The catalytic activity of the materials had a good correlation with their surface acidity. A plausible reaction mechanism has been proposed. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Name: Methyl heptanoate).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Name: Methyl heptanoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics