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Your search keyword '"COPPER catalyst selectivity"' showing total 3 results
Start Over Descriptor "COPPER catalyst selectivity" Journal chemical communications
3 results on '"COPPER catalyst selectivity"'

1. Cu2O template synthesis of high-performance PtCu alloy yolk-shell cube catalysts for direct methanol fuel cells.

Author

Sheng-Hua Ye, Xu-Jun He, Liang-Xin Ding, Zheng-Wei Pan, Ye-Xiang Tong, Mingmei Wu, and Gao-Ren Li

Subjects
*BIMETALLIC catalysts synthesis, *PLATINUM-copper alloys, *DIRECT methanol fuel cells, *OXIDATION of methanol, *COPPER oxide, *CATALYST structure, *COPPER catalyst selectivity
Abstract

Novel PtCu alloy yolk-shell cubes were fabricated via the disproportionation and displacement reactions in Cu2O yolk-shell cubes, and they exhibit significantly improved catalytic activity and durability for methanol electrooxidation. [ABSTRACT FROM AUTHOR]

Published
2014
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2. Copper-promoted oxidative-fluorination of arylphosphine under mild conditions.

Author

Na Liu, Liu-Liang Mao, Bin Yang, and Shang-Dong Yang

Subjects
*COPPER catalyst selectivity, *OXIDATIVE phosphorylation, *FLUORINATION, *ORGANOPHOSPHORUS compounds, *FLUORINE compounds synthesis, *ARYL phosphates, *COUPLING reactions (Chemistry)
Abstract

An efficient method for the synthesis of phosphoric fluoride via oxidative coupling between hydrophosphine oxide and NaF is reported. DDQ serves as the oxidizing reagent as well as the hydrogen acceptor. The process involves a Cu(II) catalysis and exhibits great functional group tolerance under mild reaction conditions. [ABSTRACT FROM AUTHOR]

Published
2014
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3. Enantioselective intramolecular propargylic amination using chiral copper-pybox complexes as catalysts.

Author

Masashi Shibata, Kazunari Nakajima, and Yoshiaki Nishibayashi

Subjects
*ENANTIOSELECTIVE catalysis, *AMINO group, *AMINATION kinetics, *INDOLINE, *COPPER catalyst selectivity, *HETEROCYCLIC compounds synthesis, *ETHYNYL compounds
Abstract

Intramolecular propargylic amination of propargylic acetates bearing an amino group at the suitable position in the presence of chiral copperpybox complexes proceeds enantioselectively to give optically active 1-ethynyl-isoindolines (up to 98% ee). The method described in this communication provides a useful synthetic approach to the enantioselective preparation of nitrogen containing heterocyclic compounds with an ethynyl group at the a-position. [ABSTRACT FROM AUTHOR]

Published
2014
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