PROCESS FOR PREPARING 2,2-DIMETHYL-5-(2,5-DIMETHYL-PHENOXY)-PENTANOIC ACID AND PROCESS FOR PREPARING INTERMEDIATES

Postupak za dobivanje 2,2-dimetil-5-(2,5-dimetilfenoksi)-pentanoinske kiseline formule (I): naznačen time, što obuhvata reagovanje estra opšte formule (X): gde (X) predstavlja halogen, i Z označava C1-8alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-...

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Hauptverfasser: EVA, KOVACS BOZO HEM, ZOLTAN, ZUBOVICS HEM, IMRE, MORAVCSIK HEM, ANTAL, SIMAY HEM, GYORGYI, VERESZKEY DONATH HEM, GABOR, FEHER HEM, KALMAN, NAGY HEM, LAJOS, TOLDY HEM, FERENC, SZEDERKENYI HEM, GYORGY, KRASZNAI HEM, GABOR, KOVACS HEM
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creator EVA, KOVACS BOZO HEM
ZOLTAN, ZUBOVICS HEM
IMRE, MORAVCSIK HEM
ANTAL, SIMAY HEM
GYORGYI, VERESZKEY DONATH HEM
GABOR, FEHER HEM
KALMAN, NAGY HEM
LAJOS, TOLDY HEM
FERENC, SZEDERKENYI HEM
GYORGY, KRASZNAI HEM
GABOR, KOVACS HEM
description Postupak za dobivanje 2,2-dimetil-5-(2,5-dimetilfenoksi)-pentanoinske kiseline formule (I): naznačen time, što obuhvata reagovanje estra opšte formule (X): gde (X) predstavlja halogen, i Z označava C1-8alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, gde halo predstavlja hlor ili brom i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C1-4 alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, sa alkalnom solju 2,5-dimetilfenola formule (II): po izboru u prisustvu alkalnog jodida kao katalizatora, pri čemu se dobiva estar formule (XI): gde Z označava C1-8 alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, i hidrolizu tako nastalog aliloksi estra formule (XI), po izboru u reakcionoj smeši bez izolovanja, radi dobivanja 2,2-dimetil-5-(2,5-dimetil-fenoksi)-pentanoinske kiseline formule (I). Prijava sadrži još 1 nezavisni i 3 zavisna zahteva. The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) which comprises reacting an ester of the general Formula (X) (X) wherein X represents halogen and Z stands for a straight or branched chain C1-8 alkylene group optionally substituted by one or two 2,2-dimethyl-5-halopentanoyloxy group(s), wherein halo represents chlorine or bromine, and in which alkylene group one or two methylene group(s) may be optionally replaced either by hetero atom(s) or by a bivalent heterocyclic group-with an alkali salt of 2,5-dimethylphenol of Formula (II) (II) or with an ester of the latter formed with a lower alkanoic acid, and hydrolizing the aryloxy-substituted ester of the general Formula (XI) thus obtained. (XI) Furthermore the invention relates to intermediate compoun
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fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_YU48481BB</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>YU48481BB</sourcerecordid><originalsourceid>FETCH-epo_espacenet_YU48481BB3</originalsourceid><addsrcrecordid>eNrjZCgKCPJ3dg0OVnDzD1IICHINcAzy9HNXMNIx0nXx9HUN8Yj00TXV1TDSMUXwAzxc_fwjIjV1A1z9Qhz9_D2dFRydPV0UHP1cFLAb5-kX4hrk6-ri6RjiGszDwJqWmFOcyguluRnk3FxDnD10Uwvy41OLCxKTU_NSS-IjQ00sTCwMnZyMCSoAAKXLNvY</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>PROCESS FOR PREPARING 2,2-DIMETHYL-5-(2,5-DIMETHYL-PHENOXY)-PENTANOIC ACID AND PROCESS FOR PREPARING INTERMEDIATES</title><source>esp@cenet</source><creator>EVA, KOVACS BOZO HEM ; ZOLTAN, ZUBOVICS HEM ; IMRE, MORAVCSIK HEM ; ANTAL, SIMAY HEM ; GYORGYI, VERESZKEY DONATH HEM ; GABOR, FEHER HEM ; KALMAN, NAGY HEM ; LAJOS, TOLDY HEM ; FERENC, SZEDERKENYI HEM ; GYORGY, KRASZNAI HEM ; GABOR, KOVACS HEM</creator><creatorcontrib>EVA, KOVACS BOZO HEM ; ZOLTAN, ZUBOVICS HEM ; IMRE, MORAVCSIK HEM ; ANTAL, SIMAY HEM ; GYORGYI, VERESZKEY DONATH HEM ; GABOR, FEHER HEM ; KALMAN, NAGY HEM ; LAJOS, TOLDY HEM ; FERENC, SZEDERKENYI HEM ; GYORGY, KRASZNAI HEM ; GABOR, KOVACS HEM</creatorcontrib><description>Postupak za dobivanje 2,2-dimetil-5-(2,5-dimetilfenoksi)-pentanoinske kiseline formule (I): naznačen time, što obuhvata reagovanje estra opšte formule (X): gde (X) predstavlja halogen, i Z označava C1-8alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, gde halo predstavlja hlor ili brom i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C1-4 alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, sa alkalnom solju 2,5-dimetilfenola formule (II): po izboru u prisustvu alkalnog jodida kao katalizatora, pri čemu se dobiva estar formule (XI): gde Z označava C1-8 alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, i hidrolizu tako nastalog aliloksi estra formule (XI), po izboru u reakcionoj smeši bez izolovanja, radi dobivanja 2,2-dimetil-5-(2,5-dimetil-fenoksi)-pentanoinske kiseline formule (I). Prijava sadrži još 1 nezavisni i 3 zavisna zahteva. The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) which comprises reacting an ester of the general Formula (X) (X) wherein X represents halogen and Z stands for a straight or branched chain C1-8 alkylene group optionally substituted by one or two 2,2-dimethyl-5-halopentanoyloxy group(s), wherein halo represents chlorine or bromine, and in which alkylene group one or two methylene group(s) may be optionally replaced either by hetero atom(s) or by a bivalent heterocyclic group-with an alkali salt of 2,5-dimethylphenol of Formula (II) (II) or with an ester of the latter formed with a lower alkanoic acid, and hydrolizing the aryloxy-substituted ester of the general Formula (XI) thus obtained. (XI) Furthermore the invention relates to intermediate compounds of the general Formula (X), wherein X and Z are as stated above, and to a process for the preparation thereof.</description><language>eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; APPARATUS THEREFOR ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; GENERAL METHODS OF ORGANIC CHEMISTRY ; HETEROCYCLIC COMPOUNDS ; HUMAN NECESSITIES ; HYGIENE ; MEDICAL OR VETERINARY SCIENCE ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>1998</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&amp;date=19980918&amp;DB=EPODOC&amp;CC=YU&amp;NR=48481B$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25566,76549</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19980918&amp;DB=EPODOC&amp;CC=YU&amp;NR=48481B$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>EVA, KOVACS BOZO HEM</creatorcontrib><creatorcontrib>ZOLTAN, ZUBOVICS HEM</creatorcontrib><creatorcontrib>IMRE, MORAVCSIK HEM</creatorcontrib><creatorcontrib>ANTAL, SIMAY HEM</creatorcontrib><creatorcontrib>GYORGYI, VERESZKEY DONATH HEM</creatorcontrib><creatorcontrib>GABOR, FEHER HEM</creatorcontrib><creatorcontrib>KALMAN, NAGY HEM</creatorcontrib><creatorcontrib>LAJOS, TOLDY HEM</creatorcontrib><creatorcontrib>FERENC, SZEDERKENYI HEM</creatorcontrib><creatorcontrib>GYORGY, KRASZNAI HEM</creatorcontrib><creatorcontrib>GABOR, KOVACS HEM</creatorcontrib><title>PROCESS FOR PREPARING 2,2-DIMETHYL-5-(2,5-DIMETHYL-PHENOXY)-PENTANOIC ACID AND PROCESS FOR PREPARING INTERMEDIATES</title><description>Postupak za dobivanje 2,2-dimetil-5-(2,5-dimetilfenoksi)-pentanoinske kiseline formule (I): naznačen time, što obuhvata reagovanje estra opšte formule (X): gde (X) predstavlja halogen, i Z označava C1-8alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, gde halo predstavlja hlor ili brom i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C1-4 alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, sa alkalnom solju 2,5-dimetilfenola formule (II): po izboru u prisustvu alkalnog jodida kao katalizatora, pri čemu se dobiva estar formule (XI): gde Z označava C1-8 alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, i hidrolizu tako nastalog aliloksi estra formule (XI), po izboru u reakcionoj smeši bez izolovanja, radi dobivanja 2,2-dimetil-5-(2,5-dimetil-fenoksi)-pentanoinske kiseline formule (I). Prijava sadrži još 1 nezavisni i 3 zavisna zahteva. The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) which comprises reacting an ester of the general Formula (X) (X) wherein X represents halogen and Z stands for a straight or branched chain C1-8 alkylene group optionally substituted by one or two 2,2-dimethyl-5-halopentanoyloxy group(s), wherein halo represents chlorine or bromine, and in which alkylene group one or two methylene group(s) may be optionally replaced either by hetero atom(s) or by a bivalent heterocyclic group-with an alkali salt of 2,5-dimethylphenol of Formula (II) (II) or with an ester of the latter formed with a lower alkanoic acid, and hydrolizing the aryloxy-substituted ester of the general Formula (XI) thus obtained. (XI) Furthermore the invention relates to intermediate compounds of the general Formula (X), wherein X and Z are as stated above, and to a process for the preparation thereof.</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>HETEROCYCLIC COMPOUNDS</subject><subject>HUMAN NECESSITIES</subject><subject>HYGIENE</subject><subject>MEDICAL OR VETERINARY SCIENCE</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZCgKCPJ3dg0OVnDzD1IICHINcAzy9HNXMNIx0nXx9HUN8Yj00TXV1TDSMUXwAzxc_fwjIjV1A1z9Qhz9_D2dFRydPV0UHP1cFLAb5-kX4hrk6-ri6RjiGszDwJqWmFOcyguluRnk3FxDnD10Uwvy41OLCxKTU_NSS-IjQ00sTCwMnZyMCSoAAKXLNvY</recordid><startdate>19980918</startdate><enddate>19980918</enddate><creator>EVA, KOVACS BOZO HEM</creator><creator>ZOLTAN, ZUBOVICS HEM</creator><creator>IMRE, MORAVCSIK HEM</creator><creator>ANTAL, SIMAY HEM</creator><creator>GYORGYI, VERESZKEY DONATH HEM</creator><creator>GABOR, FEHER HEM</creator><creator>KALMAN, NAGY HEM</creator><creator>LAJOS, TOLDY HEM</creator><creator>FERENC, SZEDERKENYI HEM</creator><creator>GYORGY, KRASZNAI HEM</creator><creator>GABOR, KOVACS HEM</creator><scope>EVB</scope></search><sort><creationdate>19980918</creationdate><title>PROCESS FOR PREPARING 2,2-DIMETHYL-5-(2,5-DIMETHYL-PHENOXY)-PENTANOIC ACID AND PROCESS FOR PREPARING INTERMEDIATES</title><author>EVA, KOVACS BOZO HEM ; ZOLTAN, ZUBOVICS HEM ; IMRE, MORAVCSIK HEM ; ANTAL, SIMAY HEM ; GYORGYI, VERESZKEY DONATH HEM ; GABOR, FEHER HEM ; KALMAN, NAGY HEM ; LAJOS, TOLDY HEM ; FERENC, SZEDERKENYI HEM ; GYORGY, KRASZNAI HEM ; GABOR, KOVACS HEM</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_YU48481BB3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1998</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>HETEROCYCLIC COMPOUNDS</topic><topic>HUMAN NECESSITIES</topic><topic>HYGIENE</topic><topic>MEDICAL OR VETERINARY SCIENCE</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>EVA, KOVACS BOZO HEM</creatorcontrib><creatorcontrib>ZOLTAN, ZUBOVICS HEM</creatorcontrib><creatorcontrib>IMRE, MORAVCSIK HEM</creatorcontrib><creatorcontrib>ANTAL, SIMAY HEM</creatorcontrib><creatorcontrib>GYORGYI, VERESZKEY DONATH HEM</creatorcontrib><creatorcontrib>GABOR, FEHER HEM</creatorcontrib><creatorcontrib>KALMAN, NAGY HEM</creatorcontrib><creatorcontrib>LAJOS, TOLDY HEM</creatorcontrib><creatorcontrib>FERENC, SZEDERKENYI HEM</creatorcontrib><creatorcontrib>GYORGY, KRASZNAI HEM</creatorcontrib><creatorcontrib>GABOR, KOVACS HEM</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>EVA, KOVACS BOZO HEM</au><au>ZOLTAN, ZUBOVICS HEM</au><au>IMRE, MORAVCSIK HEM</au><au>ANTAL, SIMAY HEM</au><au>GYORGYI, VERESZKEY DONATH HEM</au><au>GABOR, FEHER HEM</au><au>KALMAN, NAGY HEM</au><au>LAJOS, TOLDY HEM</au><au>FERENC, SZEDERKENYI HEM</au><au>GYORGY, KRASZNAI HEM</au><au>GABOR, KOVACS HEM</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PROCESS FOR PREPARING 2,2-DIMETHYL-5-(2,5-DIMETHYL-PHENOXY)-PENTANOIC ACID AND PROCESS FOR PREPARING INTERMEDIATES</title><date>1998-09-18</date><risdate>1998</risdate><abstract>Postupak za dobivanje 2,2-dimetil-5-(2,5-dimetilfenoksi)-pentanoinske kiseline formule (I): naznačen time, što obuhvata reagovanje estra opšte formule (X): gde (X) predstavlja halogen, i Z označava C1-8alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, gde halo predstavlja hlor ili brom i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C1-4 alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, sa alkalnom solju 2,5-dimetilfenola formule (II): po izboru u prisustvu alkalnog jodida kao katalizatora, pri čemu se dobiva estar formule (XI): gde Z označava C1-8 alkilen grupu normalnog ili račvastog lanca koja je po izboru supstituisana sa jednom ili dve 2,2-dimetil-5-halopentanoiloksi grupe, i gde alkilen grupa, jedna ili dve metilen grupe mogu biti po izboru zamenjene sa hetero atomom, poželjno atomom kiseonika i/ili azota gde atom azota može biti po izboru supstituisan sa fenil ili C alkil grupom koja je po izboru supstituisana sa 2,2-dimetil-5-halopentanoiloksi grupom ili sa dvovalentnom heterocikličnom grupom, takvom kao što je piperazin-1,4-diil grupa, i hidrolizu tako nastalog aliloksi estra formule (XI), po izboru u reakcionoj smeši bez izolovanja, radi dobivanja 2,2-dimetil-5-(2,5-dimetil-fenoksi)-pentanoinske kiseline formule (I). Prijava sadrži još 1 nezavisni i 3 zavisna zahteva. The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) which comprises reacting an ester of the general Formula (X) (X) wherein X represents halogen and Z stands for a straight or branched chain C1-8 alkylene group optionally substituted by one or two 2,2-dimethyl-5-halopentanoyloxy group(s), wherein halo represents chlorine or bromine, and in which alkylene group one or two methylene group(s) may be optionally replaced either by hetero atom(s) or by a bivalent heterocyclic group-with an alkali salt of 2,5-dimethylphenol of Formula (II) (II) or with an ester of the latter formed with a lower alkanoic acid, and hydrolizing the aryloxy-substituted ester of the general Formula (XI) thus obtained. (XI) Furthermore the invention relates to intermediate compounds of the general Formula (X), wherein X and Z are as stated above, and to a process for the preparation thereof.</abstract><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
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR RELEVANT APPARATUS
TRANSPORTING
title PROCESS FOR PREPARING 2,2-DIMETHYL-5-(2,5-DIMETHYL-PHENOXY)-PENTANOIC ACID AND PROCESS FOR PREPARING INTERMEDIATES
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