Water soluble phosphines VII. Palladium-catalyzed PC cross coupling reactions between primary or secondary phosphines and functional aryliodides — a novel synthetic route to water soluble phosphines
IC6H4-X or IH3-XY in organic solvents (dimethylacetamide, acetonitrile, methanol) using organic amines or potassium and sodium acetate as bases. If the primary phosphine is employed in the appropriate stoichiometric ratio, functionalized secondary phosphines, e.g. Ph(H)PC6H4-p-SO3Na, may be obtained selectively.
作者:David J. Brauer、Martin Hingst、Konstantin W. Kottsieper、Christian Liek、Thomas Nickel、Michael Tepper、Othmar Stelzer、William S. Sheldrick
DOI:10.1016/s0022-328x(01)01371-7
日期:2002.2
position to the halogen in the aromatic ring systems. It may be performed in protic and aprotic solvents. The chiral spirocyclic boronato complex 15a is formed upon reaction of 3 with boric acid, while with benzeneboronic acid 15c with a peripheral Lewis acid group is obtained. The Pd-mediated PC coupling reaction of primary phosphines proceeds stepwise, tailor-made chiral secondary (16) and tertiary