+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Application of a new phosphorus-free palladium heterogeneous nanocatalyst supported on modified MWCNT the highly selective and efficient cleavage of propargyl, allyl, and benzyl phenol ethers under mild conditions



Application of a new phosphorus-free palladium heterogeneous nanocatalyst supported on modified MWCNT the highly selective and efficient cleavage of propargyl, allyl, and benzyl phenol ethers under mild conditions



Molecular Diversity 19(3): 481-500



A stable and efficient phosphorus-free, low Pd-loading heterogeneous nanocatalyst comprising palladium and a multi-walled carbon nanotube was prepared and characterized by various techniques such as SEM, TEM, AFM, FT-IR, and Raman spectrometry, N2 adsorption isotherm and thermogravimetric analysis. This catalyst was used for the deprotection of phenol ethers. The catalyst selectivity for deprotection of between propargyl, allyl, and benzyl, as a protecting group, was studied. Also, the presence of different functional groups was studied to establish the scope and limitations of this method. The catalytic activity of recycled catalyst was evaluated. The results indicated that the catalyst is heterogeneous, stable, and very active under the established conditions, and it could be reused up to five times without any significant leaching. In addition, according to ICP analysis, low leaves of leaching of palladium from the catalyst was observed, which indicates that anthraquinone has an excellent ability to coordinate with palladium.

(PDF emailed within 0-6 h: $19.90)

Accession: 057222185

Download citation: RISBibTeXText

PMID: 25894362

DOI: 10.1007/s11030-015-9585-3


Related references

Synthesis and characterization of cobalt-supported catalysts on modified magnetic nanoparticle: Green and highly efficient heterogeneous nanocatalyst for selective oxidation of ethylbenzene, cyclohexene and oximes with molecular oxygen. Journal of Colloid and Interface Science 506: 10-26, 2017

Selective cleavage of allyl and propargyl ethers to alcohols catalyzed by Ti(O-i-Pr)4/MXn/Mg. Organic Letters 9(5): 773-776, 2007

Nicotine functionalized-silica palladium (II) complex: a highly efficient, environmentally benign and recyclable nanocatalyst for C-C bond forming reactions under mild conditions. Applied Organometallic Chemistry 30(9): 777-782, 2016

A highly efficient, mild, and selective cleavage of beta-methoxyethoxymethyl (MEM) ethers by cerium(III) chloride in acetonitrile. Organic Letters 3(8): 1149-1151, 2001

Catecholborane Reductive Cleavage of Allyl and Propargyl Acetals and Ketals: A Simple Route to Allyl and Prop-2-ynyl Ethers. Synthetic Communications 21(7): 907-913, 1991

Efficient and selective alkylation of arenes and heteroarenes with benzyl and allyl ethers using a Ir/Sn bimetallic catalyst. Tetrahedron 63(37): 9146-9152, 2007

Highly enantioselective ene-type spiro-cyclization of allyl propargyl ethers catalyzed by cationic palladium(II) complexes with a new type of PN-ligand bearing achiral gem-dimethyl oxazoline. Journal of Molecular Catalysis A: Chemical 196(1-2): 165-169, 2003

Supported palladium nanomaterials as catalysts for petroleum chemistry: 2. Kinetics and specific features of the mechanism of selective hydrogenation of phenylacetylene in the presence of carbon-supported palladium nanocatalyst. Petroleum Chemistry 55(2): 118-126, 2015

Silver nanoparticles supported on alumina--a highly efficient and selective nanocatalyst for imine reduction. Dalton Transactions 43(11): 4255-4259, 2013

Palladium TPPTS catalyst in water: C-allylation of phenol and guaiacol with allyl alcohol and novel isomerisation of allyl ethers of phenol and guaiacol. Journal of Molecular Catalysis A: Chemical 244(1-2): 124-138, 2006

Highly Efficient and Reusable Polyaniline-Supported Palladium Catalysts for Open-Air Oxidative Heck Reactions under Base- and Ligand-Free Conditions. Advanced Synthesis & Catalysis 350(13): 1968-1974, 2008

Selective aerobic oxidation of the biomass-derived precursor 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid under mild conditions over a magnetic palladium nanocatalyst. Green Chemistry 17(2): 1308-1317, 2015

Mild and efficient silylation of alcohols under ambient and solvent-free conditions with phosphorus pentoxide supported on alumina (P2O5/Al2O3) as catalyst. Research on Chemical Intermediates 41(2): 947-954, 2015

Mild, Efficient, and Selective Cleavage of Trityl Ethers with Antimony Trichloride. Synthetic Communications 36(10): 1361-1366, 2006

Selective Deprotection of Ethers by Low-Valent Titanium: Facile Cleavage of Propargyl Ethers. Synlett 1993(08): 581-582, 1993