[EN] A PROCESS FOR THE PREPARATION OF METHIONINE ALPHA-HYDROXY ANALOGUES FROM SUGARS AND DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ANALOGUES D'ALPHA-HYDROXYLATION DE L-MÉTHIONINE À PARTIR DE SUCRES ET DE DÉRIVÉS DE CEUX-CI
申请人:HALDOR TOPSOE AS
公开号:WO2016174231A1
公开(公告)日:2016-11-03
A process for the preparation of methionine a-hydroxy analogue and derivatives thereof comprising contacting one or more sugars or derivatives thereof with a metallo-silicate composition in the presence of a compound comprising sulphur and a solvent.
Process for preparing esters of lactic acid, and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogues from sugars
申请人:Haldor Topsøe A/S
公开号:US10100007B2
公开(公告)日:2018-10-16
A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a means for stabilizing a Lewis acid catalyst for use in a continuous reaction process wherein the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.
Process for the preparation of methionine alpha-hydroxy analogues from sugars and derivatives thereof
申请人:HALDOR TOPSØE A/S
公开号:US10189778B2
公开(公告)日:2019-01-29
A process for the preparation of methionine a-hydroxy analogue and derivatives thereof comprising contacting one or more sugars or derivatives thereof with a metallo-silicate composition in the presence of a compound comprising sulphur and a solvent.
Methods for using sulfur-containing compounds comprising short chain aliphatic ester or amide moieties as solvents and compositions comprising these compounds are provided.
提供了将包含短链脂肪族酯或酰胺分子的含硫化合物用作溶剂的方法以及包含这些化合物的组合物。
Process for preparing esters of α-hydroxy methionine from sugars
申请人:Haldor Topsoe A/S
公开号:US10280136B2
公开(公告)日:2019-05-07
A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a stabilized Lewis acid catalyst for use in a continuous reaction process, where the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.