Copper Compounds
Recent Literature
A simple and mild TEMPO-CuCl catalyzed aerobic oxidation of primary and
secondary alcohols in ionic liquid [bmim][PF6] gave the
corresponding aldehydes and ketones with no trace of overoxidation to carboxylic
acids. The product can be isolated by a simple extraction with organic solvent,
and the ionic liquid can be recycled or reused.
I. A. Ansari, R. Gree, Org. Lett., 2002, 4, 1507-1509.
A four-component system consisting of acetamido-TEMPO/Cu(ClO4)2/TMDP/DABCO
in DMSO allows an efficient room-temperature aerobic alcohol oxidation
of various alcohols into their corresponding aldehydes or ketones in
good to excellent yields. The catalytic system can be recycled.
N. Jiang, A. J. Ragauskas, J. Org. Chem., 2006, 71, 7087-7090.
The system Cu(ClO4)2/acetamido-TEMPO/DMAP catalyses
the room-temperature aerobic oxidation of primary alcohols to aldehydes in
the ionic liquid [bmpy]PF6. The catalysts can be recycled and
reused.
N. Jiang, A. J. Ragauskas, Org. Lett., 2005,
7, 3689-3692.
A facile nickel-catalyzed oxidation of primary alcohols with
tetrabutylammonium peroxydisulfate in the presence of ammonium hydrogen
carbonate under basic aqueous conditions provides access to various aliphatic,
aromatic and heterocyclic nitriles in excellent yields with very high
purity.
F.-E. Chen, Y.-Y. Li, M. Xu, H.-Q. Jia, Synthesis, 2002, 1804-1806.
The use of Cu(OAc)2 enables a dehydrogenative cross-coupling between
two heteroarenes via disproportionation of the copper mediator. This synthetic
protocol provides a concise and "green" access to unsymmetrical biheteroarenes
bearing structural motifs of substantial utility in organic synthesis.
Z. F. Mao, Z. Wang, Z. Q. Xu, F. Huang, Z. K. Yu, R. Wang, Org. Lett., 2012,
14, 3854-3857.
