Synthesis of a copper(ii) complex covalently anchoring a (2-iminomethyl)phenol moiety supported on HAp-encapsulated-α-Fe₂O₃ as an inorganic–organic hybrid magnetic nanocatalyst for the synthesis of primary and secondary amides

Abstract

A novel hydroxyapatite-encapsulated-α-Fe2O3-based Cu(ii) organic–inorganic hybrid (interphase) catalyst was prepared.

HAp‐encapsulated γ‐Fe2O3‐supported dual acidic heterogeneous catalyst for highly efficient one‐pot synthesis of benzoxanthenones and 3‐pyranylindoles

“…In continuation of our research interests in the application of heterogeneous and ionic liquid catalysts for development of useful synthetic methodologies, in the present article we report the synthesis and application of the novel [Fe 2 O 3 @HAp]‐supported dual acidic nanocatalyst 3 (Scheme ) in efficient, simple and facile one‐pot three‐component syntheses of benzo[ a ]xanthenone and 3‐pyranylindole derivatives (Scheme ).…”

“…N ‐(3‐Propyltriethoxysilane)imidazole ( 1 ), 3‐sulfobutyl‐1‐(3‐propyltriethoxysilane)imidazolium hydrogen sulfate (IL 2 ) and [Fe 2 O 3 @HAp] were synthesized according to procedures reported in the literature . To a solution of IL 2 (1.0 g) in absolute ethanol (30 ml), [Fe 2 O 3 @HAp] (2.0 g) was added.…”

Introduction of Ag/CuO/MCM‐48 as an efficient catalyst for the one‐pot synthesis of novel pyran‐pyrrole hybrids

“…In line with our continuous research program to develop green pathways in organic transformations and synthesize new heterocyclic systems, Ag/CuO/MCM‐48 (Scheme ) as a novel heterogeneous catalyst was prepared and applied for the synthesis of hitherto unreported 2‐pyranylpyrrole derivatives (Scheme ).…”

Copper(II) Acetate-Catalysed Conversion of Aldoximes to Amides under Mild Conditions

“…Catalysts reported recently include those containing Rh, 5 Ru, 6 Ag/Au 7 and Cu. [8][9][10][11][12][13] We planned to use a copper catalyst in our work and we noted that some Cu-catalysed reactions usually proceeded at a relatively high temperature 8,13 or the reaction time was relatively long. [9][10][11] In this paper, we report the development of a mild and relatively rapid method for the conversion of aldoximes to amides by the combined use of copper(II) acetate and acetonitrile in ethanol.…”