Process for producing optically active alpha-amino acid and optically active alpha-amino acid amine
申请人:——
公开号:US20030171597A1
公开(公告)日:2003-09-11
The present invention provides a process for efficiently producing an optically active &agr;-amino acid and an optically active &agr;-amino acid amide. After contacting with cells or processed cells thereof having an ability to asymmetrically hydrolyse, a water solvent is substituted with at least one solvent selected from the group consisting of linear, branched, or cyclic alcohol having 3 or more carbon atoms and the optically active &agr;-amino acid is preferentially precipitated from the alcohol solution.
The addition of basic compounds, particularly potassium compounds to the alcohol solution containing the optically active &agr;-amino acid amide, which is obtained after the separation of the optically active &agr;-amino acid, enables the purification of the amide without the inclusion of amino acid into amino acid amide. Thus, the amide is subjected to the step of racemization and then recycled.
PROCESS FOR PRODUCING OPTICALLY ACTIVE ALPHA-AMINO ACID AND OPTICALLY ACTIVE ALPHA-AMINO ACID AMIDE
申请人:Mitsubishi Rayon Co., Ltd.
公开号:EP1300392A1
公开(公告)日:2003-04-09
The present invention provides a process for efficiently producing an optically active α-amino acid and an optically active α-amino acid amide. After contacting with cells or processed cells thereof having an ability to asymmetrically hydrolyse, a water solvent is substituted with at least one solvent selected from the group consisting of linear, branched, or cyclic alcohol having 3 or more carbon atoms and the optically active α-amino acid is preferentially precipitated from the alcohol solution.
The addition of basic compounds, particularly potassium compounds to the alcohol solution containing the optically active α-amino acid amide, which is obtained after the separation of the optically active α-amino acid, enables the purification of the amide without the inclusion of amino acid into amino acid amide. Thus, the amide is subjected to the step of racemization and then recycled.
Synthesis of Cyclohexane Carboxamide Derivatives Useful as Sensates in Consumer Products
申请人:The Procter & Gamble Company
公开号:US20180312463A1
公开(公告)日:2018-11-01
Synthesis methods to produce a series of carboxamides built off of an (S)-2-amino acid backbone or an (R)-2-amino acid backbone, depending upon the desired diastereomer of the end product.
US6949658B2
申请人:——
公开号:US6949658B2
公开(公告)日:2005-09-27
[EN] SYNTHESIS OF CYCLOHEXANE CARBOXAMIDE DERIVATIVES USEFUL AS SENSATES IN CONSUMER PRODUCTS<br/>[FR] SYNTHÈSE DE DÉRIVÉS DE CARBOXAMIDE CYCLOHEXANE UTILES COMME AGENTS SENSORIELS DANS DES PRODUITS DE CONSOMMATION
申请人:PROCTER & GAMBLE
公开号:WO2017070418A1
公开(公告)日:2017-04-27
Synthesis methods to produce a series of carboxamides built off of an (S)-2-amino acid backbone or an (R)-2-amino acid backbone, depending upon the desired diastereomer of the end product.