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DPPE-PdCl

PdCl(dppe) 2]Y2 + 2DMSO = 2[PdCl(dppe)(DMSO)]Y -------->... [Pg.1112]

In contrast to less efficient allylation of alcohols, allylation of phenols proceeds much more smoothly. In the enantioselective synthesis of (—)-galanthamine by Trost, two Pd-catalyzed reactions were utilized. Asymmetric allylation of the bro-movanillin 191 with the cyclic allylic carbonate 192 gave the ether 193 by using ( ] -allyl-PdCl)2 and chiral Trost L-2. Subsequent Heck reaction of 194 afforded 195 in 91 % yield when DPPP was used as a ligand. DPPF and DPPE gave lower yield [74]. [Pg.459]

Substitution of the Cp ligand when [Pd( -Cp)(dppe)]Tf is reacted with PEts or PBU3 in chlorinated solvents has also been observed, [PdCl(PR3)(dppe)]Tf being obtained as product. Conversely, if chlorinated solvents are avoided, substitution of the diphosphine occurs. " ... [Pg.390]

See other pages where DPPE-PdCl is mentioned: [Pg.473]    [Pg.473]    [Pg.495]    [Pg.496]    [Pg.1112]    [Pg.1143]    [Pg.246]    [Pg.124]    [Pg.25]    [Pg.804]    [Pg.37]    [Pg.823]    [Pg.195]    [Pg.263]    [Pg.76]    [Pg.50]    [Pg.672]    [Pg.5985]    [Pg.6016]    [Pg.6110]    [Pg.7755]    [Pg.358]    [Pg.103]    [Pg.114]    [Pg.301]    [Pg.301]    [Pg.203]    [Pg.103]    [Pg.281]    [Pg.459]    [Pg.311]    [Pg.564]    [Pg.280]    [Pg.76]   
See also in sourсe #XX -- [ Pg.2 , Pg.49 ]



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