Copper-catalyzed addition of ethyl diazoacetate to furans: an alternative to dirhodium(II) tetraacetate.
The complexes Tp(x)Cu (Tp(x) = homoscorpionate ligand) catalyze the high yield addition of the carbene fragment :CHCO(2)Et, from ethyl diazoacetate, to furans under mild conditions to give different cyclopropanes and dienes with ratios that depend on the Tp(x) ligand employed, therefore inducing the control of the selectivity in this transformation.
Caballero
Ana
A
Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Campus de El Carmen, Universidad de Huelva, 21007-Huelva, Spain.
Díaz-Requejo
M Mar
MM
Trofimenko
Swiatoslaw
S
Belderrain
Tomás R
TR
Pérez
Pedro J
PJ