HUT45476A - Process for producing optical isomers of transchrysantemic acid - Google Patents

Process for producing optical isomers of transchrysantemic acid

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Publication number
HUT45476A
HUT45476A HU330286A HU330286A HUT45476A HU T45476 A HUT45476 A HU T45476A HU 330286 A HU330286 A HU 330286A HU 330286 A HU330286 A HU 330286A HU T45476 A HUT45476 A HU T45476A
Authority
HU
Hungary
Prior art keywords
acid
optical purity
fraction
optical isomers
transchrysantemic
Prior art date
Application number
HU330286A
Other languages
Hungarian (hu)
Other versions
HU203715B (en
Inventor
Ferenc Faigl
Elemer Fogassy
Maria Acs
Laszlone Boros
Gyula Balogh
Peterfy Zsuzsanna Banvoelgyine
Lajos Nagy
Original Assignee
Chinoin Gyogyszer Es Vegyeszet
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 Chinoin Gyogyszer Es Vegyeszet filed Critical Chinoin Gyogyszer Es Vegyeszet
Priority to HU330286A priority Critical patent/HU203715B/en
Publication of HUT45476A publication Critical patent/HUT45476A/en
Publication of HU203715B publication Critical patent/HU203715B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

HUT045476 In order to obtain optical isomers of trans-chrysanthemumic-acid, an enantiomer of 3-40% optical purity is agitated in an organic solvent at a temp. between -10 and +30 deg.C. The resulting crystalline trans-chrysanthemumic acid is removed and the optically active fraction is extracted from the liq. phase. If needed, the process is repeated once or a number of times. Conversely, an enantiomer mixt. of at least 40% optical purity is allowed to stand between -15 deg.C and 35 deg.C and the fluid fraction of greater optical purity is sepd. from the solid crystalline fraction of lower optical purity. This process can be repeated one or more times, using the melt as the starting point. The solid crystalline fraction is reagitated with the aid of an organic solvent in order to separate the racemic and optically pure parts.
HU330286A 1986-07-31 1986-07-31 Process for separating optically active isomeres of cys-free trans chrisanthemic acid HU203715B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU330286A HU203715B (en) 1986-07-31 1986-07-31 Process for separating optically active isomeres of cys-free trans chrisanthemic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU330286A HU203715B (en) 1986-07-31 1986-07-31 Process for separating optically active isomeres of cys-free trans chrisanthemic acid

Publications (2)

Publication Number Publication Date
HUT45476A true HUT45476A (en) 1988-07-28
HU203715B HU203715B (en) 1991-09-30

Family

ID=10963487

Family Applications (1)

Application Number Title Priority Date Filing Date
HU330286A HU203715B (en) 1986-07-31 1986-07-31 Process for separating optically active isomeres of cys-free trans chrisanthemic acid

Country Status (1)

Country Link
HU (1) HU203715B (en)

Also Published As

Publication number Publication date
HU203715B (en) 1991-09-30

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Legal Events

Date Code Title Description
HMM4 Cancellation of final prot. due to non-payment of fee