Palladium acetate immobilized in a hierarchical MFI zeolite-supported ionic liquid: a highly active and recyclable catalyst for Suzuki reaction in water
A new precatalyst for the Suzuki reaction—a pyridyl-bridged dinuclear palladium complex as a source of mono-ligated palladium(<scp>0</scp>)
作者:Andrew Beeby、Sylvia Bettington、Ian J. S. Fairlamb、Andrés E. Goeta、Anant R. Kapdi、Elina H. Niemelä、Amber L. Thompson
DOI:10.1039/b401077a
日期:——
pyridyl-bridged palladiumcomplex, trans-(P,N)-[PdBr(μ-C5H4N-C2,N)(PPh3)]21, was obtained from material isolated from the Suzuki cross-coupling reaction of 2-bromopyridine with 2,4-difluorophenylboronic acid in the presence of catalytic (PPh3)4Pd. Complex 1 is an effective precatalyst for the Suzuki cross-coupling reactions of a variety organoboronic acids and aryl bromides, and represents a useful source of mono-ligated
Bis(triphenylphosphine)palladium(II)succinimide as a precatalyst for Suzuki cross-coupling—subtle effects exerted by the succinimide ligand
作者:Ian J.S. Fairlamb、Anant R. Kapdi、Jason M. Lynam、Richard J.K. Taylor、Adrian C. Whitwood
DOI:10.1016/j.tet.2004.05.018
日期:2004.6
A new palladium(II) precatalyst for Suzuki cross-coupling of aryl halides and organoboronic acids has been identified, namely bis(triphenylphosphine)palladium(II)succinimide [(Ph3P)(2)Pd(N-Succ)(2)] 2. The precatalyst is easily prepared from palladium(O) precursors, such as (Ph3P)(4)Pd or Pd(2)dba(3). CHCl3/Ph3P and succinimide, is air, light and moisture stable, and may be employed with a variety of substrates to give the cross-coupled products, in good yields and in reasonable time, at relatively low catalyst loadings. (C) 2004 Elsevier Ltd. All rights reserved.