Chemistry is traditionally divided into organic and inorganic chemistry. Formula: C24H54P2Pd, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 53199-31-8
The compound Pd(eta3-1-Ph-C3H4) (eta5-C5H5) (I) reacts cleanly with many tertiary phosphines L to undergo reductive elimination of PhC3H 4-C5H5 and form palladium(0) species of the types PdLn (n = 2, 3), long believed to be exemplary catalysts for Suzuki-Miyaura, Heck-Mizoroki, and Sonogashira cross-coupling reactions. I has accordingly been shown to be generally much more effective for these catalytic processes than are conventional catalyst precursors such as Pd(PPh 3)4, Pd2(dba)3, PdCl2, and Pd(OAc)2, in large part because I stands alone in this series for its ability to generate specifically and efficiently the desired species PdL2 in many cases. We have now investigated I as a precursor for prototypical Buchwald-Hartwig amination reactions of 4-bromo- and 4-chloroanisole with morpholine, making comparisons with Pd2(dba) 3, Pd(OAc)2, and [Pd(eta3-1-Ph-C 3H4)Cl]2 (IV). In this work we have utilized PBut3 because of its general effectiveness, and we have also assessed XPhos and Mor-Dalphos, representatives of important classes of phosphines utilized elsewhere for amination reactions.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method