Method for the preparation of optically active trimethyllactic acid and its esters
Die Erfindung betrifft ein neues Verfahren zur Herstellung optisch aktiver Trimethylmilchsäure und/oder ihrer Ester durch katalytische Hydrierung von Trimethylbrenztraubensäure und/oder ihrer Ester in Gegenwart von Edelmetallkomplexkatalysatoren mit Phosphor-haltigen Liganden. Production of opticall...
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| creator | DREISBACH, CLAUS SIRGES, WOLFRAM |
| description | Die Erfindung betrifft ein neues Verfahren zur Herstellung optisch aktiver Trimethylmilchsäure und/oder ihrer Ester durch katalytische Hydrierung von Trimethylbrenztraubensäure und/oder ihrer Ester in Gegenwart von Edelmetallkomplexkatalysatoren mit Phosphor-haltigen Liganden.
Production of optically active trimethyl lactic acid compounds and/or their esters comprises enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. Production of optically active trimethyl lactic acid compounds and/or their esters of formula (I) comprises the enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters of formula (II) in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. R1 = H, or alkyl, aryl, aralkyl or heteroaryl (all optionally substituted). |
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Production of optically active trimethyl lactic acid compounds and/or their esters comprises enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. Production of optically active trimethyl lactic acid compounds and/or their esters of formula (I) comprises the enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters of formula (II) in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. R1 = H, or alkyl, aryl, aralkyl or heteroaryl (all optionally substituted).</description><edition>7</edition><language>eng ; fre ; ger</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; APPARATUS THEREFOR ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; GENERAL METHODS OF ORGANIC CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2001</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20011205&DB=EPODOC&CC=EP&NR=1160237A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20011205&DB=EPODOC&CC=EP&NR=1160237A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>DREISBACH, CLAUS</creatorcontrib><creatorcontrib>SIRGES, WOLFRAM</creatorcontrib><title>Method for the preparation of optically active trimethyllactic acid and its esters</title><description>Die Erfindung betrifft ein neues Verfahren zur Herstellung optisch aktiver Trimethylmilchsäure und/oder ihrer Ester durch katalytische Hydrierung von Trimethylbrenztraubensäure und/oder ihrer Ester in Gegenwart von Edelmetallkomplexkatalysatoren mit Phosphor-haltigen Liganden.
Production of optically active trimethyl lactic acid compounds and/or their esters comprises enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. Production of optically active trimethyl lactic acid compounds and/or their esters of formula (I) comprises the enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters of formula (II) in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. R1 = H, or alkyl, aryl, aralkyl or heteroaryl (all optionally substituted).</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>APPARATUS THEREFOR</subject><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>CHEMISTRY</subject><subject>GENERAL METHODS OF ORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2001</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi0EKwjAQAHPxIOof9gOCbUHPIhUvgoj3siQbupBml2QR-nsr-ABPA8PM2j3vZKMEiFLARgItpFjQWDJIBFFjjynNgN74TWCFp-WYU_oKv2gOgDkAWwWqRqVu3SpiqrT7cePg2r8utz2pDFQVPWWyoX80zfHQdqdz2_2RfADECTfX</recordid><startdate>20011205</startdate><enddate>20011205</enddate><creator>DREISBACH, CLAUS</creator><creator>SIRGES, WOLFRAM</creator><scope>EVB</scope></search><sort><creationdate>20011205</creationdate><title>Method for the preparation of optically active trimethyllactic acid and its esters</title><author>DREISBACH, CLAUS ; SIRGES, WOLFRAM</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1160237A23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2001</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>APPARATUS THEREFOR</topic><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>CHEMISTRY</topic><topic>GENERAL METHODS OF ORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>DREISBACH, CLAUS</creatorcontrib><creatorcontrib>SIRGES, WOLFRAM</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>DREISBACH, CLAUS</au><au>SIRGES, WOLFRAM</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for the preparation of optically active trimethyllactic acid and its esters</title><date>2001-12-05</date><risdate>2001</risdate><abstract>Die Erfindung betrifft ein neues Verfahren zur Herstellung optisch aktiver Trimethylmilchsäure und/oder ihrer Ester durch katalytische Hydrierung von Trimethylbrenztraubensäure und/oder ihrer Ester in Gegenwart von Edelmetallkomplexkatalysatoren mit Phosphor-haltigen Liganden.
Production of optically active trimethyl lactic acid compounds and/or their esters comprises enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. Production of optically active trimethyl lactic acid compounds and/or their esters of formula (I) comprises the enantioselective hydrogenation of trimethyl pyruvic acids and/or their esters of formula (II) in the presence of a noble metal complex catalyst having optically active bisphosphine ligands. R1 = H, or alkyl, aryl, aralkyl or heteroaryl (all optionally substituted).</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | Method for the preparation of optically active trimethyllactic acid and its esters |
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