Ruthenium-Catalyzed Tandem Olefin Metathesis−Oxidations
摘要:
The utility of Grubbs' 2nd generation metathesis catalyst has been expanded by the development of two tandem olefin metathesis/oxidation protocols. These ruthenium-catalyzed processes provide cis-diols or r-hydroxy ketones from simple olefinic starting materials.
Ruthenium-Catalyzed Tandem Olefin Metathesis−Oxidations
摘要:
The utility of Grubbs' 2nd generation metathesis catalyst has been expanded by the development of two tandem olefin metathesis/oxidation protocols. These ruthenium-catalyzed processes provide cis-diols or r-hydroxy ketones from simple olefinic starting materials.
Preparation of amino acids and amino acid derivatives
申请人:Umicore AG & Co. KG
公开号:US10774035B2
公开(公告)日:2020-09-15
The invention relates to a method for synthesizing amino acids or amino acid derivatives involving cross metathesis of functionalized olefins and a tandem amination-reduction process. Amino acids and amino acid derivatives present many interesting physical and chemical properties finding many uses in the automotive, fuel, electronic, and textile industries.
PREPARATION OF AMINO ACIDS AND AMINO ACID DERIVATIVES
申请人:Umicore AG & Co. KG
公开号:US20190276388A1
公开(公告)日:2019-09-12
The invention relates to a method for synthesizing amino acids or amino acid derivatives involving cross metathesis of functionalized olefins and a tandem amination-reduction process. Amino acids and amino acid derivatives present many interesting physical and chemical properties finding many uses in the automotive, fuel, electronic, and textile industries.
A process is disclosed for producing resilient polyurethane foams by foaming an organic polyisocyanate, an isocyanate-reactive compound and a fusible polymer. The improvement in the hardness of the foams is achieved without adversely affecting the other properties of the foams, such as tensile strength and elongation.