PROCESS FOR PREPARATION OF MACROCYCLIC ESTERS
PURPOSE: A process for the preparation of macro cyclic esters from dicarboxylic acid glycol ester is provided which is industrially advantageous because it is carried out in a short process, simple operation and good yield. CONSTITUTION: The process comprises (1)heating a mixture of (a) a dicarboxyl...
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| creator | FELD MARCEL DR KOEHLER GUENTER DR OSTERHOLT CLEMENS METZ JOSEF DR |
| description | PURPOSE: A process for the preparation of macro cyclic esters from dicarboxylic acid glycol ester is provided which is industrially advantageous because it is carried out in a short process, simple operation and good yield. CONSTITUTION: The process comprises (1)heating a mixture of (a) a dicarboxylic acid bis(glycol)ester, (b) a glycol of HO-(CH2)n-OH in an amount of 1-50 times by mole based on the unit of dicarboxylic acid of esters, (c) an inert, high-boiling reaction medium in an amount of 0.1-20 times by weight based on the total amount of ester, in the presence of a catalyst, to 150 to 350°C under pressure of about 0.1 to 500 mbar, (2)removing glycol to give a macro cyclic ester of the formula 1. |
| format | Patent |
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CONSTITUTION: The process comprises (1)heating a mixture of (a) a dicarboxylic acid bis(glycol)ester, (b) a glycol of HO-(CH2)n-OH in an amount of 1-50 times by mole based on the unit of dicarboxylic acid of esters, (c) an inert, high-boiling reaction medium in an amount of 0.1-20 times by weight based on the total amount of ester, in the presence of a catalyst, to 150 to 350°C under pressure of about 0.1 to 500 mbar, (2)removing glycol to give a macro cyclic ester of the formula 1.</description><edition>7</edition><language>eng</language><subject>APPARATUS THEREFOR ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ; GENERAL METHODS OF ORGANIC CHEMISTRY ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; HETEROCYCLIC COMPOUNDS ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2000</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=20000626&DB=EPODOC&CC=KR&NR=20000034798A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20000626&DB=EPODOC&CC=KR&NR=20000034798A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FELD MARCEL DR</creatorcontrib><creatorcontrib>KOEHLER GUENTER DR</creatorcontrib><creatorcontrib>OSTERHOLT CLEMENS</creatorcontrib><creatorcontrib>METZ JOSEF DR</creatorcontrib><title>PROCESS FOR PREPARATION OF MACROCYCLIC ESTERS</title><description>PURPOSE: A process for the preparation of macro cyclic esters from dicarboxylic acid glycol ester is provided which is industrially advantageous because it is carried out in a short process, simple operation and good yield. 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CONSTITUTION: The process comprises (1)heating a mixture of (a) a dicarboxylic acid bis(glycol)ester, (b) a glycol of HO-(CH2)n-OH in an amount of 1-50 times by mole based on the unit of dicarboxylic acid of esters, (c) an inert, high-boiling reaction medium in an amount of 0.1-20 times by weight based on the total amount of ester, in the presence of a catalyst, to 150 to 350°C under pressure of about 0.1 to 500 mbar, (2)removing glycol to give a macro cyclic ester of the formula 1.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL METHODS OF ORGANIC CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING |
| title | PROCESS FOR PREPARATION OF MACROCYCLIC ESTERS |
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