A Valuable, Inexpensive CuI/N??Heterocyclic Carbene Catalyst for the Selective Diboration of Styrene

…, F Maseras, M Díaz??Requejo, PJ Pérez…

Index: Lillo, Vanesa; Fructos, Manuel R.; Ramirez, Jesus; Braga, Ataualpa A. C.; Maseras, Feliu; Diaz-Requejo, M. Mar; Perez, Pedro J.; Fernandez, Elena Chemistry - A European Journal, 2007 , vol. 13, # 9 p. 2614 - 2621

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Citation Number: 98

Abstract

Abstract The complexes [Cu (NHC)(NCMe)] BF 4 (NHC= N-heterocyclic ligand), with bis (catecholato) diboron (B 2 (cat) 2) as the boron source, efficiently catalyze the diboration of styrene with very high degrees of conversion. With the appropriate NHC ligand, the reaction proceeds quantitatively toward the diborated derivative PhCH (Bcat)[BOND] CH 2 (Bcat). The [styrene]/[B 2 (cat) 2] ratio also has a strong effect on the selectivity: the use of an ...