1,721,001 research outputs found

    Whitby, R, NX39531

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/425241Surname: WHITBY. Given Name(s) or Initials: R. Military Service Number or Last Known Location: NX39531. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 52683.251088 Item: [2016.0049.57502] "Whitby, R, NX39531

    Whitby, R B (Raymond Bruce), QX12170

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/425242Surname: WHITBY. Given Name(s) or Initials: R B (RAYMOND BRUCE). Military Service Number or Last Known Location: QX12170. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 38518.251090 Item: [2016.0049.57503] "Whitby, R B (Raymond Bruce), QX12170

    An optimised scalable synthesis of H2O@C60and a new synthesis of H2@C60

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    New high-yielding synthetic routes to the small-molecule endofullerenes H2O@C60, D2O@C60 and H2@C60 are described. The use of high temperatures and pressures for the endohedral molecule incorporation are avoided. A new partial closure step using PPh3, and final suturing using a novel Diels–Alder/retro-Diels–Alder sequence are amongst the advances reported

    A convergent regiospecific synthesis of zirconium enolates

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    alpha-Lithiated phenylsulphonyloxiranes insert into alkenylzirconocene chlorides with loss of phenylsulphinate to give zirconyloxiranes which smoothly rearrange by either alpha- or beta- C-O cleavage to afford regiodefined zirconium enolates which may be further elaborated

    Insertion of metallated epoxides into zirconacycles

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    Metallated epoxides (epoxysilanes, epoxynitriles, epoxystyrene) insert efficiently into zirconacycles via a 1,2-metallate rearrangement to form intermediates which eliminate Cp2Zr(R)O- to afford substituted alkenes

    Insertion of metallated epoxynitriles into organozirconocene chlorides. A convergent synthesis of 2-cyano-1,3-dienes

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    Lithiated epoxynitriles insert efficiently into alkenylzirconocene chlorides via a 1,2-metallate rearrangement to form intermediates which eliminate Cp2Zr(Cl)O- to afford substituted 2-cyano-1,3-dienes

    Carbenoid insertion into alkenylzirconocenes - a convergent synthesis of functionalised allylmetallics

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    Insertion of lithium alkylcarbenoids RC(A)LiX, A= CN, P(O)(OEt)(2), SO2Ph, OMe into alkenylzirconocene chlorides derived by hydrozirconation of terminal alkynes affords functionalised allylzirconium reagents which may be further elaborated

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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