HUT54670A - Process for producing intermediates of alkyl-ester of isodehydro-acetic acid - Google Patents

Process for producing intermediates of alkyl-ester of isodehydro-acetic acid

Info

Publication number
HUT54670A
HUT54670A HU395689A HU395689A HUT54670A HU T54670 A HUT54670 A HU T54670A HU 395689 A HU395689 A HU 395689A HU 395689 A HU395689 A HU 395689A HU T54670 A HUT54670 A HU T54670A
Authority
HU
Hungary
Prior art keywords
alkyl
acid
isodehydro
ester
acetic acid
Prior art date
Application number
HU395689A
Other languages
Hungarian (hu)
Other versions
HU205101B (en
Inventor
Sandor Jani
Ferenc Jurak
Miklos Nemes
Original Assignee
Egyt Gyogyszervegyeszeti Gyar
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 Egyt Gyogyszervegyeszeti Gyar filed Critical Egyt Gyogyszervegyeszeti Gyar
Priority to HU395689A priority Critical patent/HU205101B/en
Publication of HUT54670A publication Critical patent/HUT54670A/en
Publication of HU205101B publication Critical patent/HU205101B/en

Links

Abstract

Intermediates of iso-hydro-acetic-acid-alkyl-esters of general formula (I) (R = low C alkyl gp.) are prepd. by condensation of aceto-acetic-acid-alkyl-esters (II) -w-in the presence of hydrochloric acid. Acid and solvents are removed from the reaction mix which is then mixed with or pref. poured into water. - Cpds. (I) acrystallised and filtered. Alkali metal or ammonium salts are added to the filtrate to approach or reach saturation pt. The soln. is extracted by a water-immiscible solvent for (II). The soln is evaporated and (II) is reused.-a
HU395689A 1989-08-04 1989-08-04 Process for producing isodehydroacetic acid alkyl esters HU205101B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU395689A HU205101B (en) 1989-08-04 1989-08-04 Process for producing isodehydroacetic acid alkyl esters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU395689A HU205101B (en) 1989-08-04 1989-08-04 Process for producing isodehydroacetic acid alkyl esters

Publications (2)

Publication Number Publication Date
HUT54670A true HUT54670A (en) 1991-03-28
HU205101B HU205101B (en) 1992-03-30

Family

ID=10966224

Family Applications (1)

Application Number Title Priority Date Filing Date
HU395689A HU205101B (en) 1989-08-04 1989-08-04 Process for producing isodehydroacetic acid alkyl esters

Country Status (1)

Country Link
HU (1) HU205101B (en)

Also Published As

Publication number Publication date
HU205101B (en) 1992-03-30

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Legal Events

Date Code Title Description
HC9A Change of name, address

Owner name: EGIS GYOGYSZERGYAR NYRT., HU

Free format text: FORMER OWNER(S): EGIS GYOGYSZERGYAR, HU

MM4A Lapse of definitive patent protection due to non-payment of fees