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Volumn 28, Issue 17, 2009, Pages 4912-4922

Replacing chloride by alkoxide: Cp2Zr(H)OR, searching for alternatives to schwartz's reagent

Author keywords

[No Author keywords available]

Indexed keywords

ALKOXIDES; DISPROPORTIONATIONS; HYDROZIRCONATION; ISOBUTYL; LIGAND EXCHANGES; REGIO-SELECTIVE; SYNTHETIC PATHWAYS; THERMAL STABILITY; TRANSIENT SPECIES; VINYL ETHERS; X-RAY DIFFRACTION STUDIES; ZIRCONOCENES;

EID: 69949146690     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om8008734     Document Type: Article
Times cited : (17)

References (91)
  • 6
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    • Togni, A.; Halterman, R. L., Eds.; Wiley-VCH: Weinheim
    • Negishi, E.-i.; Montchamp, J.-L. In Metallocenes; Togni, A.; Halterman, R. L., Eds.; Wiley-VCH: Weinheim, 1998; p 241.
    • (1998) Metallocenes , pp. 241
    • Negishi, E.-I.1    Montchamp, J.-L.2
  • 55
    • 69949155829 scopus 로고    scopus 로고
    • Averaged structural data from unsubstituted zirconocene dialkoxide complexes in the CSD database: JAFYUK, JAQSOJ, JAQSUP, KARKUJ, WEKYOB, XENXIX, YIVWUV, YUWDUP, ZIMXUO, ZIMXUO01
    • Averaged structural data from unsubstituted zirconocene dialkoxide complexes in the CSD database: JAFYUK, JAQSOJ, JAQSUP, KARKUJ, WEKYOB, XENXIX, YIVWUV, YUWDUP, ZIMXUO, ZIMXUO01
  • 59
    • 69949123579 scopus 로고    scopus 로고
    • note
    • 2 remains unreacted. However, neither did we observe any remaining precipitate nor did the spectra exhibit resonances of the sparingly soluble dihydride complex. While we did not investigate the fate of the dihydride in detail, coloration of the solution seems to indicate a certain amount of reduction to zirconium(II) species.
  • 68
    • 69949181352 scopus 로고    scopus 로고
    • Values determined from 16 comparable complexes in the CSD database with the following ref codes: BEHWAM, CUYHIN, FAZMUO, GERSEC, ICAJUS, IGOCAI, KIHLES, LIFVAX, NETYOA, NETYUG, NIKXEK, NIYXEY, PUXSUW, RAQXEM, UKIBEV, YUVMAD
    • Values determined from 16 comparable complexes in the CSD database with the following ref codes: BEHWAM, CUYHIN, FAZMUO, GERSEC, ICAJUS, IGOCAI, KIHLES, LIFVAX, NETYOA, NETYUG, NIKXEK, NIYXEY, PUXSUW, RAQXEM, UKIBEV, YUVMAD
  • 72
    • 69949185034 scopus 로고    scopus 로고
    • Determined from a structural search on Cp and Ind zirconium complexes with unchelated terminal alkyl ligands in the Cambridge Structural Database
    • Determined from a structural search on Cp and Ind zirconium complexes with unchelated terminal alkyl ligands in the Cambridge Structural Database.
  • 78
    • 0035802160 scopus 로고    scopus 로고
    • In the rare cases where stable zirconocene complexes with β-Hcontaining alkyl substiuents were obtained in the absence of π-donor ligands, their relative stability is attributed to steric crowding of the metal center. Wendt, O. F.; Bercaw, J. E. Organometalics 2001, 20, 3891.
    • (2001) Organometalics , vol.20 , pp. 3891
    • Wendt, O.F.1    Bercaw, J.E.2
  • 81
    • 69949188545 scopus 로고    scopus 로고
    • note
    • 6 solution gave rise to a new zirconocene species, which contained the two now resolved triplets, shifted to 2.77 and 2.45 ppm, in addition to peaks assigned to inserted isonitrile.
  • 82
    • 69949153595 scopus 로고    scopus 로고
    • note
    • 1H NMR and GC-MS analyses showed the formation of l-iodo-2-phenylethane and iodohexane, respectively, in 51% and 90% yield (relative to initial olefin). 1-Iodo-l-phenylethane (expected upon reaction of 13 with iodine) was not identified in the obtained reaction mixtures, although a minor, iodine-containing compound was observed in GC-MS analyses, which showed identical fragmentation patterns and similar retention times to l-iodo-2-phenylethane.
  • 83
    • 69949173396 scopus 로고    scopus 로고
    • note
    • Neither NMR nor GC-MS data allowed a complete assignment of the cis- and trans-isomers for 2- or 3-hexene, respectively.
  • 90
    • 69949175360 scopus 로고    scopus 로고
    • Release 2.1-0; Bruker AXS Inc. : Madison, WI
    • APEX2, Release 2.1-0; Bruker AXS Inc. : Madison, WI, 2006.
    • (2006) APEX2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.