Synthesis of new copper(<scp>i</scp>) complexes with tris(2-pyridyl) ligands. Applications to carbene and nitrene transfer reactions
作者:Julio Pérez、Dolores Morales、Luis A. García-Escudero、Héctor Martínez-García、Daniel Miguel、Pablo Bernad
DOI:10.1039/b812604f
日期:——
New copper(I) complexes with tris(2-pyridyl)methane (TPC), tris(2-pyridyl)methoxymethane (TPM) and tris(2-pyridyl)amine (TPN) ligands have been synthesized and characterized, including structural determinations by X-ray diffraction of some examples. Their activity as catalysts in carbene and nitrenetransferreactions was studied.
Copper-Catalyzed Addition of Ethyl Diazoacetate to Furans: An Alternative to Dirhodium(II) Tetraacetate
作者:Ana Caballero、M. Mar Díaz-Requejo、Swiatoslaw Trofimenko、Tomás R. Belderrain、Pedro J. Pérez
DOI:10.1021/jo050551d
日期:2005.7.1
The complexes TpxCu (Tpx = homoscorpionate ligand) catalyze the high yield addition of the carbene fragment :CHCO2Et, from ethyl diazoacetate, to furans under mild conditions to give different cyclopropanes and dienes with ratios that depend on the Tpx ligand employed, therefore inducing the control of the selectivity in this transformation.