Author
Charles G. Overberger
Bio: Charles G. Overberger is an academic researcher from York University. The author has contributed to research in topics: Optical rotatory dispersion & Chain transfer. The author has an hindex of 17, co-authored 36 publications receiving 836 citations.
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1,292 citations
TL;DR: The general applicability of the laccase-mediator-system (Lignozym®-process) will be given by a comparison of results obtained with pulps from different sources of wood and from several pulping processes, especially regarding effects on pulps, kinetic data and specificity of the reaction.
679 citations
TL;DR: Iron(III) is also able to catalyze exo and endo skeletal rearrangements of 1,6-enynes, although the scope of this transformation is more limited.
Abstract: Gold(I) complexes are the most active catalysts for alkoxy- or hydroxycyclization and for skeletal rearrangement reactions of 1,6-enynes. Intramolecular alkoxycyclizations also proceed efficiently in the presence of gold(I) catalysts. The first examples of the skeletal rearrangement of enynes by the endocyclic cyclization pathway are also documented. Iron(III) is also able to catalyze exo and endo skeletal rearrangements of 1,6-enynes, although the scope of this transformation is more limited. The gold(I)-catalyzed endocyclic cyclization proceeds by a mechanism different from those followed in the presence of PdII, HgII, or RhI catalysts.
333 citations
TL;DR: Azo compounds are characterized by a low energy 1 n,π* electronic state, which gives rise to a weak band at long wavelengths in the absorption spectrum as discussed by the authors, and coupling of this state with other low-lying molecular states is responsible for the high intensity of the "azo band" compared to other forbidden transitions, for its lack of vibrational structure, and for the inability of nearly all organic azo compounds to fluoresce.
Abstract: Azo compounds are characterized by a low-energy 1(n,π*) electronic state, which gives rise to a weak band at long wavelengths in the absorption spectrum. Coupling of this state with other low-lying molecular states is responsible for the high intensity of the “azo band” compared to other forbidden transitions, for its lack of vibrational structure, and for the inability of nearly all organic azo compounds to fluoresce.
278 citations
TL;DR: There has been an explosion of interest in ionic liquids in the last five years that has resulted in the discovery of a vast number of new ionic liquid with a wide range of interesting applications as mentioned in this paper.
Abstract: There has been an explosion of interest in ionic liquids in the last five years that has resulted in the discovery of a vast number of new ionic liquids with a wide range of interesting applications. Although ionic liquids are invariably described as highly stable green solvents, thorough investigations quantifying their purity, stability, biodegradability, and toxicity have lagged behind the pace of other research in the area. This review addresses these key issues and summarizes the approaches that have been developed for recycling ionic liquids.
258 citations