Density functional theory calculations were performed to study the Lewis acid(Sc~(3+))effects on the reactivity of ultrahigh-valent chromium-oxo species toward both C-H bond activation and sulfoxidation reactions.Calculations confirm that the oxidizing power of chromium-oxo species is enhanced by ...
Lewis Acid-Catalysed Anomerisation and Rearrangement of Alkyl D-Glycopyranosides During Acetalisation with Methyl Pyruvate: How to Utilise it for the Preparation of 1-(Carboxyethylidene)glycopyranosyl DonorsAnomerizationGlycosidesGlycosyl donors, pyruvylated...
As a weaker nucleophile is also a stronger Brnsted acid, it can be selectively deprotonated by a Brnsted base to give an anionic species that shows higher reactivity. Following this idea, the reactivity of nucleophiles can be controlled by using an appropriate Lewis acid/Brnsted base pair ...
The reaction between alcohols and Boc20 leads to the formation of tert-butyl ethers and/or Boc-alcohols, depending on the nature of the Lewis acid catalyst. Product distribution is mainly tuned by the anionic part of the salt. Perchlorates and triflates, anions with highly delocalized negative...
From Acid Rain to Low Precipitation: The Role Reversal of Norway Spruce, Silver Fir, and European Beech in a Selection Mountain Forest and Its Implications for Forest Management. Forests 2021, 12, 894. [Google Scholar] [CrossRef] Lenk, E.; Kenk, G. Langfristiges Wachstum Schwarzwälder Pl...
From Acid Rain to Low Precipitation: The Role Reversal of Norway Spruce, Silver Fir, and European Beech in a Selection Mountain Forest and Its Implications for Forest Management. Forests 2021, 12, 894. [Google Scholar] [CrossRef] Lenk, E.; Kenk, G. Langfristiges Wachstum Schwarzwälder Pl...