Effect of 2-Substitution on the Rearrangement of 1-Cyclopropylvinyl Cations

2-Substitution in 1-cyclopropylvinyl cations produces a steric effect on cation generation and solvent trapping, but an electronic charge-stabilizing effect on cyclopropyl-to-cyclobutyl rearrangement

Identification of Binuclear Acyl Complexes as Intermediates in the CO-induced Conversion of [(η^5-C_5H_5)Co(CO)(Me)]_2 into Acetone, and [(η^5-C_5H_5)Co(CO)(Et)]_2 into Pentan-3-one

Studies of the carbonylation of [(η^5-C_5H_5)Co(CO)(R)]_2(R = Me, Et) at temperatures below ambient have revealed that these complexes may be converted into ketones via binuclear diacyl complexes [(η^5-C_5H_5)Co(CO)(COR)]_2; the postulated mechanistic pathway circumvents the earlier-identified intermediate (η^5-C_5H_5)Co(CO)R_2, and involves alkyl transfer from a Co^(II) acyl complex as a critical step

Towards more effective collaboration by higher education institutions for greater regional development in the Gauteng City-Region

November 2014Higher education institutions (HEIs) in the Gauteng City-Region (GCR) and elsewhere are increasingly being called upon to do more than their traditional roles of teaching and research. They are now expected to collaborate and engage with other stakeholders with a view to contributing directly and indirectly to social and economic development in their localities. Such an orientation includes having HEIs actively fostering public-private partnerships and other initiatives that enhance equitable regional development. The adoption of such a focus has implications for all aspects of these institutions’ activities, as well as for the policy and regulatory framework in which they operate. This Occasional Paper reflects critically on the role of HEIs in regional development. It surveys current debates on the matter and draws out some of the implications on how we ought to think further about the current state of government-industry-academia interaction and collaboration for development in the GCR.written by Robert Bergman for GCR

Cationic Cyclization Involving a Remote Allene Function in the Trifluoroethanolysis of Hepta-5,6-dienyl Toluene-p-sulphonate

The remote allene function participates efficiently in the trifluoroethanolysis of hepta-5,6-dienyl toluene-p-sulphonate, leading to the cyclized 2-methylenecyclohexyl cation

Observations on Arctic and Red-throated Loons at Storkersen Point, Alaska

Habitat requirements of arctic loons (Gavia arctica) and red-throated loons (Gavia stellata) were studied at Storkersen Point on the Arctic coastal plain of Alaska from 1971 to 1975. Nest success ranged from 28 to 92 per cent and 33 to 78 per cent for arctic and red-throated loons, respectively. Loons were ecologically isolated in their feeding habits and use of wetlands. Arctic loons fed to their young invertebrates captured in the nest pond, and red-throated loons fed to theirs fish captured from the Beaufort Sea. Both species preferred islands as nest substrates, but arctic loons utilized large ponds with stands of Arctophila fulva wetlands for nesting, whereas, red-throated loons used smaller, partially-drained basins most frequently