Electric Literature of 32005-36-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.32005-36-0, Name is Bis(dibenzylideneacetone)palladium, molecular formula is C34H28O2Pd. In a Article£¬once mentioned of 32005-36-0
Selectivity in reductive elimination and organohalide transfer from methyl(aryl) benzylpalladium(IV) complexes of bidentate nitrogen donor ligands, PdBrMe(Ar) (CH2Ph) (L2)
Oxidative addition of iodoarenes to bis(dibenzylideneacetone)palladium(0) in the presence of N, N, N?, N?-tetramethylethylenediamine (tmeda) affords PdIAr(tmeda) (Ar = 4-MeC6H4, 4-MeOC6H4, 4-Me(O)CC6H4, 4-O2NC6H4, 3-MeOC6H4) in high yield. Some of these complexes (Ar = 4-MeC6H4, 4-MeOC6H4, 3-MeOC6H4) react with LiMe to form PdMeAr(tmeda), and the methyl(aryl)palladium(II) complexes react with 2,2?-bipyridyl (bpy) or 1,10-phenanthroline (phen) to afford PdMeAr(L2); PdMePh(phen) may be obtained similarly. All of the diorganopalladium(II) complexes of bpy and phen react with benzyl bromide to form PdBrMeAr(CH2Ph)(L2) but a complex could not be isolated for Ar = 3-MeOC6H4, L2 = bpy. The isolated palladium(IV) complexes react with PdMe2(bpy) at -20C in (CD3)2CO to selectively transfer benzyl bromide to give PdMeAr(L2) and PdBrMe2(CH2PhXbpy) respectively. The complexes PdBrMeAr(CH2Ph)(bpy) (Ar = Ph, 4-MeC6H4, 4-MeOC6H4) undergo selective reductive elimination of Ar-Me in CDCl3 to form PdBr(CH2Ph)(L2), but PdBrMeAr(CH2Ph)(phen) (Ar = Ph, 4-MeC6H4, 4-MeOC6H4, 3-MeOC6H4) give mixtures of PdBr(CH2Ph)(phen) and Me-Ar together with lesser amounts of PdBrMe(phen) and Ar-CH2Ph (ca. 10-20%).
We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 32005-36-0, and how the biochemistry of the body works.Electric Literature of 32005-36-0
Reference£º
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method