53433-58-2

Upstream product

• 1291-32-3 zirconocene dichloride 
• 21289-08-7 1,4-dilithio-1,2,3,4-tetraphenylbutadiene 
• 501-65-5 diphenyl acetylene 
• 113192-49-7 (η5-Cp)2(PMePh2)zirconacyclopropene 
• 75361-73-8 bis(η5-cyclopentadienyl)(η4-isoprene)zirconium 
• 59487-85-3 zirconocene dicarbonyl 
• 12636-72-5 bis(cyclopentadienyl)dimethylzirconium(IV) 
• 928-49-4 hex-3-yne 
• 1124337-40-1 Cp₂Zr[2-Ph₂P-3-Mes-4,5-Ph₂C₄] 
• 1124337-17-2 Cp₂Zr[2-(i)Pr₂P-3,4,5-Ph₃C₄] 
• 1124337-23-0 Cp₂Zr[2-Ph₂P-3,4,5-Ph₃C₄] 
• 1383844-19-6 zirconocene bis(bis(2,4,6-trimethylphenyl)arsenide) 
• 1142802-69-4 Cp₂Zr[2,4-(mesityl)2-3,5-(propyl)2C₄] 
• 1142802-73-0 Cp₂Zr[2,4,5-Ph₃-3-MesC₄] 

Downstream Products

• 806-71-3 1,2,3,4-tetraphenyl-1,3-butadiene 
• 542-92-7 cyclopenta-1,3-diene 
• 113111-23-2 2,3,4,5-tetraphenylthiophen-1-monoxid 
• 16030-09-4 1,1-dichloro-2,3,4,5-tetraphenyl-1-germacyclopenta-2,4-diene 
• 1291-32-3 zirconocene dichloride 
• 20991-88-2 1,1-dimethyl-2,3,4,5-tetraphenyl-1-germacyclopentadiene 
• 526202-18-6 Cp₂Zr(C₄-2,5-(p-C₆H₄CF₃)2-3,4-(C₆H₄Me)2) 
• 526202-12-0 Cp₂Zr(C₄-3,4-(p-C₆H₄CF₃)2-2,5-(C₆H₄Me)2) 
• 526202-14-2 Cp₂Zr(C₄-3,5-(p-C₆H₄CF₃)2-2,4-(C₆H₄Me)2) 
• 15570-45-3 1,2,3,4-tetraphenylcyclopentadiene 
• 2406-00-0 1-(4-methylphenyl)-2,3,4,5-tetraphenyl-1H-pyrrole 
• 70148-39-9 N-Benzyl-2,3,4,5-tetraphenylpyrrole 
• 12775-96-1 copper 

Relevant academic research and scientific papers

THE CRYSTAL STRUCTURE OF 1,1-BIS(η5-CYCLOPENTADIENYL)-2,3,4,5-TETRAPHENYLZIRCONOLE

The crystal and molecular structure of (η5-C5H5)2Zr has been determined by single crystal X-ray diffraction methods.The compound is isostructural with its titanium and hafnium analogues, and crystallizes in the monoclinic space group P21/n with unit cell parameters a = 13.790(5), b = 11.136(5), c = 18.692(7) Angstroem, β = 92.82(4) deg, and ρcalc = 1.34 g cm-3 for Z = 4.Full-matrix least-squares refinement converged with a conventional R value of 0.049 for 2986 observed reflections.The metallocyclic ring is planar to within 0.05 Angstroem, and the ?-electron density is largely localized.The two independent Zr-C(?) bond lengths are 2.250(5) and 2.265(6) Angstroem.The Zr-C(η5) distances range from 2.482(6) to 2.546(7) Angstroem, and average 2.521(20) Angstroem.A comparison of zirconium- and hafnium-carbon bonds based on the data available shows that for M = Hf the M-C bonds are shorter for all cases: C(sp), C(sp2), C(sp3), C(η5).

Synthesis, Characterization and Reactivity of Formal 20 Electron Zirconocene-Pentafulvene Complexes

The reaction of low-valent zirconocene reagents formed either from the Negishi reagent Cp2Zr(n-butyl)2 or from the reduction of Cp2ZrCl2 with Mg with various pentafulvenes yielded the first zirconocene-pentafulv

Evidence for transmetalation of zirconacyclopentadiene to cobalt complex

Transmetalation reaction of zirconacyclopentadienes with cobalt(III) complex, CpCo(PPh3)I2, proceeded to afford (cyclobutadiene)cobalt(I) complexes, CpCo(C4R4). The structure of one of the cobalt complexes was v

Synthesis of phospholes and 1,1′-biphospholes mediated by zirconacyclopentadienes and PBr3

The efficient synthesis of phospholes through the reactions of Grignard reagents with in situ-generated 1-bromophospholes has been developed. This method allows the easy substituent variation at the phosphorus atom of the phospholes. The 1,1′-biphospholes can also be conveniently prepared through Zn-promoted debromo-dimerization of 1-bromophospholes. The gold-phosphole complexes of LAuCl were also synthesized, which were found to act as efficient catalysts in gold-catalyzed [3+2] cycloaddition of ynamides with 4,5-dihydro-1,2,4-oxadiazoles.

Negishi's Reagent Versus Rosenthal's Reagent in the Formation of Zirconacyclopentadienes

Zirconacyclopentadienes are versatile precursors for a large number of heteroles, which are accessible by Zr-element exchange reactions. The vast majority of reports describe their preparation by the use of Negishi′s reagent, which is a species that is fo

1,2,3,4-Tetrasubstituted cyclopentadienes and their applications for metallocenes: Efficient synthesis through zirconocene- and CuCl-mediated intermolecular coupling of two alkynes and one diiodomethane

1,2,3,4-Tetrasubstituted cyclopentadienes and indene derivatives with identical or different substituents were obtained in good to excellent isolated yields through a zirconocene- and CuCl-mediated intermolecular coupling process. This synthetic procedure involved three organic partners, including one CH 2I2, and two different or identical alkynes. Two alkynes or one diyne undergo Cp2ZrII-mediated (Cp= η5-C5H5) pair-selective reductive coupling to afford the corresponding zirconacyclopentadiene derivatives, which react, in the presence of CuCl and 1,3-dimethyl-3,4,5,6-tetrahydro-2(1 H)-pyrimidinone (DMPU), with CH2I2 through intermolecular followed by intramolecular coupling to afford the cyclopentadiene derivatives. An application of the prepared tetrasubstituted cyclopentadiene derivatives was demonstrated by the facile synthesis of the corresponding zirconocene complexes [(4RCp)2ZrCl2] and [(4RCp) 2ZrR′2] (R′=Me, Et, or nBu). The unique 1,2,3,4-tetrasubstituted cyclopentadiene ligands and the corresponding metallocenes are expected to have further applications in organometallic chemistry and organic synthesis. Ringing in the changes: A one-pot synthesis of 1,2,3,4-tetrasubstituted cyclopentadienes by zirconocene- and CuCl-mediated intermolecular coupling of two alkynes and diiodomethane (see scheme; Cp=η5-C5H5; DMPU=1,3-dimethyl-3,4,5,6- tetrahydro-2(1 H)-pyrimidinone) gave products that were successfully applied for the synthesis of the corresponding zirconocene derivatives. Copyright

As-As bond formation via reductive elimination from a zirconocene bis(dimesitylarsenide) compound

A new zirconocene bis(arsenide) derivative, Cp2Zr(AsMes 2)2 (1; Cp = cyclopentadienyl, Mes = 2,4,6- trimethylphenyl), has been prepared by the metathetical reaction of 2 equiv of LiAsMes2 with Cp2ZrCl2 and structurally characterized. Efforts to prepare Cp2ZrCl(AsMes2) (2) by reaction of 1 equiv of LiAsMes2 with Cp2ZrCl2 yielded a mixture of products that could not be separated, including 1 and 2, as identified by 1H NMR spectroscopy. Compound 1 thermally decomposes with formation of As2Mes4, suggestive of reductive elimination to form an As-As bond. Further evidence for reductive elimination comes from effective interception of a putative zirconium(II) intermediate with diphenylacetylene to give Cp2Zr(C4Ph4).

Mesityl alkyne substituents for control of regiochemistry and reversibility in zirconocene couplings: New synthetic strategies for unsymmetricalzirconacyclopentadienes and conjugated polymers

Reaction of 2 equivs of MesC≡CPh with Cp2Zr( η2-Me3SiC≡CSiMe3)(pyr) afforded the zircona-cyclopentadiene Cp2Zr[2,5-Ph2-3,4-Mes2C 4]. The regiochemistry of this isomer (ssss with

Unsymmetrical Zirconacyclopentadienes from Isolated Zirconacyclopropenes with 1-Alkynylphosphine Ligands

The reaction of one equiv of 1-alkynylphosphines, R2PC≡CR? (R = Et,iPr, or Ph and R = Ph or Mes), with Cp2Zr(pyr) (η2-Me3SiC≡CSiMe3) resulted in formation of monoalkyne complexes. In the ca

Heterometallic (ZrIII)2-Al hydrides [(Cp 2Zr)2(μ-H)](μ-H)2AlX2 (X = Cl or Br): Preparative synthesis and reactivity. Molecular structure of [(Cp 2Zr)2(μ-Cl)](μ-H)

A procedure was developed for the synthesis of trinuclear cyclic (Zr III)2-Al hydrides [(Cp2Zr)2(μ-H)] (μ-H)2AlX2 (X = Cl (1a) or Br (1b)). These complexes were prepared in 60-65% yields by