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Aerobic, Chemoselective Oxidation of Alcohols to Carbonyl Compounds Catalyzed by a DABCO‐Copper Complex under Mild Conditions
Author(s) -
Mannam Sreedevi,
Alamsetti S. Kumar,
Sekar G.
Publication year - 2007
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200700213
Subject(s) - dabco , chemistry , nitromethane , allylic rearrangement , copper , catalysis , oxidation state , trigonal bipyramidal molecular geometry , stoichiometry , chloride , inorganic chemistry , organic chemistry , photochemistry , polymer chemistry , molecule
A DABCO‐copper(I) chloride complex (5 mol %) together with TEMPO (5 mol %) in nitromethane as solvent has been used as an efficient catalytic system for the selective oxidation of benzylic and allylic alcohols into the corresponding carbonyl compounds at room temperature where molecular oxygen acts as an ultimate, stoichiometric oxidant and water is the only by‐product. The solid‐state structure determination of the DABCO‐copper complex shows that the copper is in the +II oxidation state with trigonal bipyramidal geometry and exists in a linear polymeric structure due to strong hydrogen bonding.