Carbopalladation-depalladation of homoallylic amines and sulfides
作者:Robert A. Holton、Richard A. Kjonaas
DOI:10.1016/s0022-328x(00)91829-1
日期:1977.12
stabilized enolates have been found to add to C-4 of homoallylic amines and sulfides in the presence of lithium tetrachloropalladate to give stable chelated palladium complexes in high yield. These complexes may either be isolated or reduced directly with sodium borohydride, providing a simple new route to ω-functionalized amines and sulfides.
The chemistry of the compound [PMe2)Cl]2 (V. R. CH(CO2Et)2) with nucleophilic (PPh3, pyridine, CO) and electrophilic (H2, HCl) reagents is studied. Although the nucleophiles cleave the chloride bridges, they do not readily disrupt the PdN bond, and both V and its adduct are very stable with respect to decomposition via olefin elimination. As expected, however, H2 and HCl cleave the PdC bond to