In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 32005-36-0, name is Bis(dibenzylideneacetone)palladium, introducing its new discovery. Formula: C34H28O2Pd
Selective head-to-tail coupling of methyl phenylpropynoate providing palladacycles with bidentate N-ligands
The complexes (1,3-dicarbomethoxy-2,4-diphenylbuta-1,3-dien-1,4-diyl)(N,N) palladium(II), where N,N = 2,2?-bipyridyl (1), tetramethylethelenediamine (2), 1,10-phenanthroline (3) have been obtained by reaction of Pd(dba) 2 with the respective bidentate N-ligand and two equivalents of methyl phenylpropynoate via a completely regioselective head-to-tail coupling of the asymmetric acetylenes. Such regioselectivity, especially in conjunction with the high yield, is very unusual in the formation of palladacycles and has so far only been observed for head-to-head or tail to tail coupling. The compounds 1-3 have been characterized by elemental analyses, NMR spectra and single crystal X-ray diffraction studies for 2 and 3. The X-ray crystal structures reveal pseudo square planar metal centers, the palladacycles and chelate rings are essentially planar.
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.Formula: C34H28O2Pd
Reference£º
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method