Copper(II) and iron(II) tetraamino- and tetrasulfophthalocyanines supported on cellulose: synthesis, characterization and catalytic activity on aerobic oxidation of alkyl arenes and alcohols

Abstract

Functionalized cellulose with copper(II) and iron(II) tetraamino-and tetrasulfophthalocyanines (CuTAPc@cellulose, CuTSPc@cellulose, FeTAPc@ cellulose, and FeTSPc@cellulose) have been synthesized and their structures characterized by FT-IR, elemental analysis, UV-Vis, X-ray diffraction, flame atomic absorption spectroscopy, thermogravimetric analysis, and scanning electron microscopy. The catalytic activity of synthesized catalysts was examined for the aerobic oxidation of alkyl arenes and alcohols to their corresponding carbonyl compounds. We found the best catalyst is the CuTSPc@cellulose from the solvent, conversion, temperature, and reaction time point of views. These catalysts can be readily recycled and reused for several runs without any significant loss of efficiency.

Natural hydroxyapatite‐supported MnO2: a green heterogeneous catalyst for selective aerobic oxidation of alkylarenes and alcohols

“…As a part of our ongoing research programme on oxidation reactions of alkylarenes and alcohols and using bio‐supported heterogeneous catalytic systems such as cellulose, chitosan, wool and silk or synthetic supports such as graphene oxide, here we report a novel heterogeneous catalytic system using MnO 2 as a green and cheap transition metal oxide and natural hydroxyapatite (NHAp) as a support for aerobic oxidation of alkylarenes and alcohols to their corresponding carbonyl compounds without using any other oxidizing agent.…”

Copper supported on MWCNT-guanidine acetic acid@Fe3O4: synthesis, characterization and application as a novel multi-task nanocatalyst for preparation of triazoles and bis(indolyl)methanes in water

“…30,31 One of the most applied procedures for the synthesis of bis(indolyl) methanes is based on the electrophilic substitution reaction of indoles with various aldehydes and ketones in the presence of heterogeneous and homogeneous acid catalysts. [32][33][34][35][36] As part of an ongoing program related to the developing new heterogeneous catalysts for organic transformations, [37][38][39][40] and based on previous investigations on graphene, [41][42][43][44][45] in this paper is reported the synthesis and characterization of a new supported Cu nanocatalyst on magnetic GAA functionalized MWCNT (Cu/MWCNT-GAA@Fe 3 O 4 ). The as-prepared nanocatalyst showed a high catalytic activity towards azide-alkyne 1,3-dipolar cycloaddition reactions for the synthesis of 1,2,3triazoles and condensation reaction for the synthesis of bis(indolyl)methanes in the presence of H 2 O as a green solvent, yielding a catalytic efficiency over several cycles (Scheme 1).…”

Highly selective aerobic oxidation of alkyl arenes and alcohols: cobalt supported on natural hydroxyapatite nanocrystals

“…[28][29][30][31][32][33][34][35][36][37][38][39][40] Using air as a green and low-cost oxidant for oxidation of alkyl arenes and alcohols to their corresponding carbonyl compounds and using natural and biocompatible supports for heterogeneous catalysts are important in view of both ecofriendly and green chemistry approach. In a continuation of our efforts to synthesis of bio-supported heterogeneous catalytic systems [40][41][42][43] and aerobic oxidation of alkyl arenes and alcohols, 40,[44][45][46] herein, we describe the selectively aerobic oxidation of alkyl arenes and alcohols to their corresponding carbonyl compounds using Co-NHAp under heterogeneous conditions without using any oxidizing reagents.…”