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One hundred years of vitamins-a success story of the natural sciences.
- M. Eggersdorfer, Dietmar Laudert, +4 authors W. Bonrath
- History, Medicine
- Angewandte Chemie
- 21 December 2012
The discovery of vitamins as essential factors in the diet was a scientific breakthrough that changed the world. Diseases such as scurvy, rickets, beriberi, and pellagra were recognized to be curable… Expand
Asymmetric hydrogenation of isobutyrophenone using a [(Diphosphine) RuCl2 (1,4-diamine)] catalyst.
[reaction: see text] The use of three chiral 1,4-diamines in the [(diphosphine) RuCl(2) (diamine)] catalyst system is demonstrated in the hydrogenation of acetophenone. The use of a 1,4-diamine… Expand
One Hundred Years of Vitamins — A Success Story of the Natural Sciences
Kinetics and mass transfer of the hydrogenation of 2-methyl-3-butyn-2-ol in a structured Pd/ZnO/Al2O3 reactor
Abstract This work presents a study of the hydrogenation of 2-methyl-3-butyn-2-ol in flow over a structured catalyst. A porous tubular metal structure is coated with a layer of ZnO/Al 2 O 3 and… Expand
Application of Tethered Ruthenium Catalysts to Asymmetric Hydrogenation of Ketones, and the Selective Hydrogenation of Aldehydes
An improved method for the synthesis of tethered ruthenium(II) complexes of monosulfonylated diamines is described, together with their application to the hydrogenation of ketones and aldehydes. The… Expand
Einhundert Jahre Vitamine – eine naturwissenschaftliche Erfolgsgeschichte
Effects of Ultrasound and Microwaves on Selective Reduction: Catalyst Preparation and Reactions
The reduction of organic compounds through catalytic hydrogenation is an important transformation in organic chemistry, especially in the synthesis of fine chemicals, natural products, and… Expand
Ultrasonically improved semi-hydrogenation of alkynes to (Z-)alkenes over novel lead-free Pd/Boehmite catalysts.
- Z. Wu, G. Cravotto, E. Gaudino, Agnese Giacomino, J. Medlock, W. Bonrath
- Chemistry, Medicine
- Ultrasonics sonochemistry
- 1 March 2017
This paper reports the application of ultrasound in the semi-hydrogenation of alkynes over two novel Pd/Boehmite catalysts. The semi-hydrogenations of phenylacetylene, diphenylacetylene and… Expand
Selective Hydrogenation of α,β-Unsaturated Aldehydes and Ketones by Air-Stable Ruthenium NNS Complexes.
The selective hydrogenation of the carbonyl functionality of α,β-unsaturated aldehydes and ketones is catalysed by ruthenium dichloride complexes bearing a tridentate NNS ligand as well as… Expand
A porous structured reactor for hydrogenation reactions
Abstract A novel combination of catalyst carrier and reactor design was developed for intensified production of vitamin intermediates. The so called Design Porous Structured Reactor ( DPSR ) is a… Expand