Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application of 1273-94-5. In my other articles, you can also check out more blogs about 1273-94-5
Application of 1273-94-5, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 1273-94-5, 1,1′-Diacetylferrocene, introducing its new discovery.
beta-Keto phosphines derived from ferrocene. Syntheses and structures of (L1) and trans-
The keto-phosphines (L1), <(Ph2PCH2C(O)(eta5-C5H4))2Fe> (L2) and <(Ph2PCH2C(O)(eta5-C5H4)C(O)CH3)> (L3) were respectively prepared by the reaction of Ph2PCl with the lithium enolates derived from acetylferrocene for L1, and 1,1′-bis(acetyl)ferrocene for L2 and L3.Ligand L1 crystallizes in the space group P1 with a 8.526(2), b 10.915(3), c 12.822(3) Angstroem, alpha 63.75(2), beta 69.04(2), gamma 70.77(2) deg, V 978.4 Angstroem3 and Z 2.The structure was solved and refined to R=0.034 and RW=0.042.The C5-rings are eclipsed (3.2 deg) and the plane of the keto group forms a dihedral angle of 13.1 deg with the C5H4 plane.In the complexes cis- and trans- (cis-1 and trans-1), <(o-C6H4CH2NMe2)PdClL1> (2), cis- (3), and (4) the phosphine ligand(s) behave as P-monodentate(s).The structure of trans-1 has been determined by X-ray diffraction at -145 deg C.The complex crystallizes in the monoclinic space group P21/c with a 10.622(7), b 12.647(7), c 15.59(1) Angstroem, beta 103.20(6) deg, V 2039 Angstroem3 and Z=2.The structure was solved and refined to R=0.037 and RW=0.053.The palladium atom lies on a centre of symmetry and the Pd-P and Pd-Cl bond lengths are respectively 2.314(1) and 2.287(1) Angstroem.The C5-rings of each ligand are slightly staggered (10.5 deg) and, as for L1, each keto group is almost parallel to the C5H4 plane (dihedral angle 8.9 deg).For the complex BF4, NMR and IR solution spectroscopy has shown that there is a dynamic exchange between chelating and P-monodentate L1.The possibility of using L2 as a binucleating ligand was demonstrated by the preparation of the trinuclear complex <((C10H8N)PdCl)2(mu-L2-P,P')> (6).The enolato complexes cis- (M=Pd (7), M=Pt (8)), and <(o-C6H4CH2NMe2)Pd(Ph2PCH=C(O)(eta5-C5H4)Fe(eta5-C5H5))> (9) were prepared in high yield by the reaction of NaH with complexes 1, 3, and 2, respectively.Complex 9 reacts with dimethylacetylenedicarboxylate to yield the alkenyl complex <(o-C6H4CH2NMe2)Pd(Ph2PCH(MeO2CC=CCO2Me))> (10), resulting from carbon-carbon coupling between the P bound enolate-carbon atom and the alkyne.All the complexes were characterized by elemental analysis, and 1H and 31P(1H) NMR and IR spectroscopy.
beta-Keto phosphines derived from ferrocene. Syntheses and structures of (L1) and trans-
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application of 1273-94-5. In my other articles, you can also check out more blogs about 1273-94-5
Reference£º
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion