HUT54993A - Process for producing 8-azaspiro(4,5)decan-7,9-dione
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Process for producing 8-azaspiro(4,5)decan-7,9-dione
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Publication number
HUT54993A
HUT54993AHU256889AHU256889AHUT54993AHU T54993 AHUT54993 AHU T54993AHU 256889 AHU256889 AHU 256889AHU 256889 AHU256889 AHU 256889AHU T54993 AHUT54993 AHU T54993A
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Application filed by Egyt Gyogyszervegyeszeti GyarfiledCriticalEgyt Gyogyszervegyeszeti Gyar
Priority to HU256889ApriorityCriticalpatent/HU206320B/en
Publication of HUT54993ApublicationCriticalpatent/HUT54993A/en
Publication of HU206320BpublicationCriticalpatent/HU206320B/en
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Abstract
aza-spiro-(4,5)-decane-7,9-dione a pharmaceutical intermediate, of glu formula (1) is prepd from 3,3-tetra: methylene-glutane-acid (11) and acetic acetic-anhydride. 8-oxa-spiro-(4,5) decane-7,9-dione is not isolated from the reaction mix, while acetic-acid forming during reaction is removed, the reaction mix is treated with ammonium-acetate. High yield, high purity prods are obtd in this one-step reaction
HU256889A1989-05-231989-05-23Process for producing 8-aza-spiro/4,5/decane-7,9-dione
HU206320B
(en)
A method for the production of 2, 2', 4, 4', 6, 6'-hexanytrostylbene (hns) with a specified degree of purity, from a product that is less pure.