VERFAHREN ZUR HERSTELLUNG VON 2-HYDROXY-4-METHYLTHIO-BUTTERSÄURE
A process for producing 2-hydroxy-4-methylthiobutanoic acid is provided wherein 2-hydroxy-4-methylthiobutyronitrile is converted to 2-hydroxy-4-methylthiobutanamide by using sulfuric acid, then adding an aqueous solution containing ammonium bisulfate and ammonium sulfate to the reaction liquid to ob...
Saved in:
| Main Authors | , |
|---|---|
| Format | Patent |
| Language | German |
| Published |
02.09.2004
|
| Edition | 7 |
| Subjects | |
| Online Access | Get full text |
Cover
Loading…
| Abstract | A process for producing 2-hydroxy-4-methylthiobutanoic acid is provided wherein 2-hydroxy-4-methylthiobutyronitrile is converted to 2-hydroxy-4-methylthiobutanamide by using sulfuric acid, then adding an aqueous solution containing ammonium bisulfate and ammonium sulfate to the reaction liquid to obtain an oil layer containing 2-hydroxy-4-methylthiobutanoic acid and an aqueous layer containing ammonium bisulfate and ammonium sulfate, then a part of the ammonium salts is separated from the aqueous layer, and the aqueous layer containing ammonium bisulfate and ammonium sulfate thus obtained is recycled as the aqueous solution containing ammonium bisulfate and ammonium sulfate described above.According to the present invention, 2-hydroxy-4-methylthiobutanoic acid of high quality can be obtained without requiring organic solvents and with a greatly reduced amount of waste water. |
|---|---|
| AbstractList | A process for producing 2-hydroxy-4-methylthiobutanoic acid is provided wherein 2-hydroxy-4-methylthiobutyronitrile is converted to 2-hydroxy-4-methylthiobutanamide by using sulfuric acid, then adding an aqueous solution containing ammonium bisulfate and ammonium sulfate to the reaction liquid to obtain an oil layer containing 2-hydroxy-4-methylthiobutanoic acid and an aqueous layer containing ammonium bisulfate and ammonium sulfate, then a part of the ammonium salts is separated from the aqueous layer, and the aqueous layer containing ammonium bisulfate and ammonium sulfate thus obtained is recycled as the aqueous solution containing ammonium bisulfate and ammonium sulfate described above.According to the present invention, 2-hydroxy-4-methylthiobutanoic acid of high quality can be obtained without requiring organic solvents and with a greatly reduced amount of waste water. |
| Author | IKUDOME, KENJI SHIOZAKI, TETSUYA |
| Author_xml | – fullname: SHIOZAKI, TETSUYA – fullname: IKUDOME, KENJI |
| BookMark | eNrjYmDJy89L5WRwDHMNcnP0CHL1U4gKDVLwcA0KDnH18Qn1c1cI8_dTMNL1iHQJ8o-I1DXR9XUN8Yj0CfHw9Nd1Cg0JAao83BIa5MrDwJqWmFOcyguluRmU3FxDnD10Uwvy41OLCxKTU_NSS-JdXM0MDAzMTCwsQ0KMjIlSBADSFy7C |
| ContentType | Patent |
| DBID | EVB |
| DatabaseName | esp@cenet |
| DatabaseTitleList | |
| Database_xml | – sequence: 1 dbid: EVB name: esp@cenet url: http://worldwide.espacenet.com/singleLineSearch?locale=en_EP sourceTypes: Open Access Repository |
| DeliveryMethod | fulltext_linktorsrc |
| Discipline | Medicine Chemistry Sciences |
| Edition | 7 |
| ExternalDocumentID | DE60006489TT2 |
| GroupedDBID | EVB |
| ID | FETCH-epo_espacenet_DE60006489TT23 |
| IEDL.DBID | EVB |
| IngestDate | Fri Jul 19 15:19:24 EDT 2024 |
| IsOpenAccess | true |
| IsPeerReviewed | false |
| IsScholarly | false |
| Language | German |
| LinkModel | DirectLink |
| MergedId | FETCHMERGED-epo_espacenet_DE60006489TT23 |
| Notes | Application Number: DE20006006489T |
| OpenAccessLink | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040902&DB=EPODOC&CC=DE&NR=60006489T2 |
| ParticipantIDs | epo_espacenet_DE60006489TT2 |
| PublicationCentury | 2000 |
| PublicationDate | 20040902 |
| PublicationDateYYYYMMDD | 2004-09-02 |
| PublicationDate_xml | – month: 09 year: 2004 text: 20040902 day: 02 |
| PublicationDecade | 2000 |
| PublicationYear | 2004 |
| RelatedCompanies | SUMITOMO CHEMICAL CO., LTD |
| RelatedCompanies_xml | – name: SUMITOMO CHEMICAL CO., LTD |
| Score | 2.5925386 |
| Snippet | A process for producing 2-hydroxy-4-methylthiobutanoic acid is provided wherein 2-hydroxy-4-methylthiobutyronitrile is converted to... |
| SourceID | epo |
| SourceType | Open Access Repository |
| SubjectTerms | ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY |
| Title | VERFAHREN ZUR HERSTELLUNG VON 2-HYDROXY-4-METHYLTHIO-BUTTERSÄURE |
| URI | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20040902&DB=EPODOC&locale=&CC=DE&NR=60006489T2 |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfV1RT8IwEG4IGvVNUSOiZjFmb42wlY0-LAbWzmpgI6Mj4AtZGU30AYjM-Af8Z_4xuwroE29Nm1yuTe6-6_W7KwB3rbQlHSkQnDqugMh2MMQK-QomQCasDLtC5yF7ocMS9DxqjkrgbVMLo_uEfurmiMqipsrec-2vl39JLKK5lat78aqmFg8B94i5uR2jgmZoko5H-xGJfNP3PULNMPYcDb4tzJW73ivC6KLPPh12iqqU5X9ICY7Bfl9Jm-cnoJTNKuDQ3_y8VgEHvfWDtxqubW91CtpDGgdtFtPQeElig9F4wGm3m4SPxjAKDQuyMYmj0Rgi2KOcjbucPUWwk3AVsA6-v5KYnoHbgHKfQaXLZLvxCaFbtblln4PyfDGfXQADZSh1pbSEtAUSaUPY9hSndYndRtrMJKqC2g5BlztXa-Dol5yCYd26AuX8_WN2rXA3Fzf6wH4Adc2Cig |
| link.rule.ids | 230,309,786,891,25594,76906 |
| linkProvider | European Patent Office |
| linkToHtml | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfV1fT8IwEL8QNOKbokbFP4sxe2uErWzsYTGwdRbdHzI6AryQlbFEH4DIjF_Ab-YXs5uAPvHWtMnl2uTud73-7gpw34pbqZZyjKaazhFWNQMZAvlyJkDClcTQeZGH9HyNRvh52ByW4G1TC1P0Cf0smiMKi5oKe88Kf738S2LZBbdy9cBfxdTi0WGmLW9uxzinGcp2xyS9wA4s2bJMm8h-aGoF-LYMJtz1np53581Dp0Enr0pZ_ocU5wj2e0LaPDuGUjKrQsXa_LxWhQNv_eAthmvbW51Ae0BCp01D4kvjKJQoCfuMuG7kP0mDwJcUREd2GAxHCCOPMDpyGe0GqBMxEbD2v7-ikJzCnUOYRZHQZbLd-MQmW7WZop5Beb6Yz85BwgmO9TRVeKpyzOMGV9WpEddTQ2_EzSTFF1DbIehy5-otVCjz3Inb9V9qcPhLVDFQXbmCcvb-MbsWGJzxm-LwfgC5O4V3 |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.title=VERFAHREN+ZUR+HERSTELLUNG+VON+2-HYDROXY-4-METHYLTHIO-BUTTERS%C3%84URE&rft.inventor=SHIOZAKI%2C+TETSUYA&rft.inventor=IKUDOME%2C+KENJI&rft.date=2004-09-02&rft.externalDBID=T2&rft.externalDocID=DE60006489TT2 |