ES455064A1 - Nuevo procedimiento para la obtencion del acido (d)-2(6-me- toxi-2-naftil)-propionico. - Google Patents

Nuevo procedimiento para la obtencion del acido (d)-2(6-me- toxi-2-naftil)-propionico.

Info

Publication number
ES455064A1
ES455064A1 ES77455064A ES455064A ES455064A1 ES 455064 A1 ES455064 A1 ES 455064A1 ES 77455064 A ES77455064 A ES 77455064A ES 455064 A ES455064 A ES 455064A ES 455064 A1 ES455064 A1 ES 455064A1
Authority
ES
Spain
Prior art keywords
propanal
isomer
give
acid
propionic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES77455064A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VALLES QUIMICA
Original Assignee
VALLES QUIMICA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VALLES QUIMICA filed Critical VALLES QUIMICA
Priority to ES77455064A priority Critical patent/ES455064A1/es
Priority to DK179377A priority patent/DK179377A/da
Priority to FI771328A priority patent/FI771328A7/fi
Priority to FR7735102A priority patent/FR2377370A1/fr
Publication of ES455064A1 publication Critical patent/ES455064A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C251/00—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton
    • C07C251/72—Hydrazones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/29—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with halogen-containing compounds which may be formed in situ
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C59/40—Unsaturated compounds
    • C07C59/58—Unsaturated compounds containing ether groups, groups, groups, or groups
    • C07C59/64—Unsaturated compounds containing ether groups, groups, groups, or groups containing six-membered aromatic rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Nuevo procedimiento para la obtención del ácido (d)-2(6-metoxi-2-naftil)-propiónico, caracterizado por la realización de la siguiente sucesión de operaciones: a) Condensación del 2(6-metoxi-2-naftil)-propal racémico con la 5(alfa-feniletil)-semioxamacida dextrógira, en medio bencénico anhidro y en presencia de yodo como catalizador, para formar la mezcla diastereoisómera de semioxamazonas: **(Fórmula)** b) Resolución de la mezcla diastereoisómera de semioxamazonas obtenida, mediante recristalizaciones en dioxano, para separar el isómero d,d III puro, reservando las aguas madres conteniendo el isómero 1,d III para su recuperación si se desea; c) Hidrólisis del isómero d,d III separado bajo la acción del ácido sulfúrico al 20 % para liberar el isómero dextrogiro del 2(6-metoxi-2-naftil)-propanal; d) Oxidación del aldehido dextrógiro obtenido, utilizando como oxidante una solución de clorito sódico en presencia de ácido sulfámico, para obtener el producto final deseado (-acido 2(6-metoxi-2-naftil)-propiónico dextrógiro)).
ES77455064A 1977-01-17 1977-01-17 Nuevo procedimiento para la obtencion del acido (d)-2(6-me- toxi-2-naftil)-propionico. Expired ES455064A1 (es)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES77455064A ES455064A1 (es) 1977-01-17 1977-01-17 Nuevo procedimiento para la obtencion del acido (d)-2(6-me- toxi-2-naftil)-propionico.
DK179377A DK179377A (da) 1977-01-17 1977-04-22 Fremgangsmaade til fremstilling af (d)-2(6-methoxy-2-naphthyl) -propionsyre
FI771328A FI771328A7 (fi) 1977-01-17 1977-04-26 Nytt foerfarande foer framstaellning av (d)-2(6-metoxi-2-naftyl)propionsyra
FR7735102A FR2377370A1 (fr) 1977-01-17 1977-11-15 Procede pour l'obtention de l'acide (d)-2(6-methoxy-2-naphtyl)-propionique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES77455064A ES455064A1 (es) 1977-01-17 1977-01-17 Nuevo procedimiento para la obtencion del acido (d)-2(6-me- toxi-2-naftil)-propionico.

Publications (1)

Publication Number Publication Date
ES455064A1 true ES455064A1 (es) 1978-02-01

Family

ID=8472965

Family Applications (1)

Application Number Title Priority Date Filing Date
ES77455064A Expired ES455064A1 (es) 1977-01-17 1977-01-17 Nuevo procedimiento para la obtencion del acido (d)-2(6-me- toxi-2-naftil)-propionico.

Country Status (4)

Country Link
DK (1) DK179377A (es)
ES (1) ES455064A1 (es)
FI (1) FI771328A7 (es)
FR (1) FR2377370A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081993A3 (en) * 1981-12-11 1984-01-11 Syntex Pharmaceuticals International Limited Optically active alpha-substituted aryl ketones, their preparation and their use in preparing alpha-arylalkanoic acids

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5210258A (en) * 1981-12-11 1993-05-11 Syntex Pharmaceuticals International Ltd. Optically active alpha-naththylalkyl ketones
US4749804A (en) * 1981-12-11 1988-06-07 Syntex (U.S.A.) Inc. Preparation of stereoisomers of ketals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081993A3 (en) * 1981-12-11 1984-01-11 Syntex Pharmaceuticals International Limited Optically active alpha-substituted aryl ketones, their preparation and their use in preparing alpha-arylalkanoic acids

Also Published As

Publication number Publication date
FI771328A7 (fi) 1978-07-15
DK179377A (da) 1978-07-15
FR2377370A1 (fr) 1978-08-11

Similar Documents

Publication Publication Date Title
ES2157293T3 (es) Preparacion de acidos carboxilicos c3-c6 alfa,beta-insaturados.
DK208089D0 (da) Fremgangsmaade til fremstilling af ferrichlorid ud fra fortyndet saltsyre
FR2455580A1 (fr) Procede pour l'epuration de solutions organiques de peracides carboxyliques
ES512933A0 (es) Un procedimiento para la produccion de sales magnesicas hidratadas por reaccion entre peroxido de hidrogeno, un anhidrido, una base y agua.
ES8105988A1 (es) Procedimiento para la preparacion de acidos oxirancarboxili-cos sustituidos
SE8501744L (sv) N-metyl-d-glukaminsaltet av d-2-(5-bromo-6-metoxi-2-naftyl)-propionsyra
ATE19868T1 (de) Herstellung von natriumsalicylat.
BE595884A (fr) Procédé de récupération d'acide sulfurique concentré à partir d'acides résiduaires dilués contenant des sels.
ES2093298T3 (es) Procedimiento de produccion del metacrilato de metilo monomero a partir de la cianhidrina de acetona.
NO960301L (no) Fremgangsmåte for fremstilling av jern(III)klorid i vandig opplösning
GB1501997A (en) Process for the purification of decane dicarboxylic acid-(1,10)
GB1299295A (en) Improvements in or relating to naphthyl acetic acid esters
SE7602714L (sv) Sett for rening av ettiksyrahaltig svavelsyra
US4422979A (en) Fluoro-substituted biphenylyl compounds and processes
GB949669A (en) Process for the production of optically-active ª -alkyl-substituted phenoxyacetic acids and the alkylamides thereof
ATE97661T1 (de) Herstellung von pyridazinon.
SE8103635L (sv) Sett att framstella dikamba med hog halt
AR012346A1 (es) Proceso para la fabricacion de compuestos racemicos, compuestos obtenidos por dicho proceso y compuestos intermediarios
Fisher et al. 5-Bromo-2, 4-xylic Acid. Nuclear Halogenation with Alkaline Hypohalite Solutions
ES8106727A1 (es) Procedimiento de preparacion de derivados 15-hidroxiimino-e-homoeburnanos,de sus sales de adicion acidas y de sus deri- vados opticamente activos
SU688426A1 (ru) Способ очистки отработанной серной кислоты от органических примесей
SU451685A1 (ru) Способ получени 2-медокси-5-хлорбензольной кислоты
FR2304255A7 (fr) Procede de fabrication d'acide terephtalique par oxydation du paraxylene
JPS5527037A (en) Recovering oxidizing catalyst
GB1167274A (en) Process for the Production of Cyclic Carboxylic Acids