The 4-exo-dig and 5-exo-dig cyclocarbopalladations have been efficiently used to produce molecular complexity in a straightforward manner. Strained 1,2-cyclobutanediols are rapidly obtained undermicrowaveirradiation in high yields. In many cases, the cyclocarbopalladation cascade reaction is associated with a 6 or 8π electrocyclic reaction. During the process of the 5-exo-dig cyclocarbopalladation
Cyclocarbopalladation: Sequential Cyclization and C−H Activation/Stille Cross-Coupling in the Pd-5-<i>Exo</i>-<i>Dig</i> Reaction
作者:Christophe Bour、Jean Suffert
DOI:10.1021/ol047537s
日期:2005.2.1
A new cyclization and C-H activation/Stille cross-coupling reaction on a nonactivated aromatic has been discovered. The reaction is regioselective and controlled by the stannylated reagent. Labeling experiments have been performed that provide evidence for a complete transfer of the deuterium through the coordination sphere of palladium.
RUDISILL, DUANE E.;STILLE, J. K., J. ORG. CHEM., 54,(1989) N5, C. 5856-5866