GR16032B - METHOD OF MANUFACTURING 1, 4 - DIPHENYL - 3, 5 DIKETOPYRAZOLIDINE AND ITS PRODUCERS. - Google Patents

METHOD OF MANUFACTURING 1, 4 - DIPHENYL - 3, 5 DIKETOPYRAZOLIDINE AND ITS PRODUCERS.

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Publication number
GR16032B
GR16032B GR530116032A GR530116032A GR16032B GR 16032 B GR16032 B GR 16032B GR 530116032 A GR530116032 A GR 530116032A GR 530116032 A GR530116032 A GR 530116032A GR 16032 B GR16032 B GR 16032B
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GR
Greece
Prior art keywords
alkyl
diphenyl
diketopyrazolidine
producers
manufacturing
Prior art date
Application number
GR530116032A
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Greek (el)
Original Assignee
Knoll A.G. Chemische Fabriken
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.)
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Publication date
Application filed by Knoll A.G. Chemische Fabriken filed Critical Knoll A.G. Chemische Fabriken
Priority to GR530116032A priority Critical patent/GR16032B/en
Publication of GR16032B publication Critical patent/GR16032B/en

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Abstract

έθοδος δια την παρασκευήν της 1,4-διφαινυλο-3,5-δικετοπυραζολιδίνης και των παραγώγων αυτής του γενικού τύπου: [*] ένθα το R1 σημαίνει υδρογόνον, αλκύλιον, αρύλιον ή αραλκύλιον, και το R2 υδρογόνον, αλκύλιον ή αραλκύλιον, ή των αλάτων τούτων μετ'ανοργάνων και οργανικών βάσεων, διακρινομένη εκ τούτου, ότι το φαινυλομηλονικόν οξύ, τον διαλκυλεστέρα τούτου, το εστεραμίδιον ή το διαλογονίδιον τούτου συμπυκνούμεν μετά της φαινυλυδραζίνης, ή των παραγώγων αυτής άτινα εις την θέσιν β είναι υποκατεστημένα δι' αλκυλίου, και, εάν τούτο είναι επιθυμητόν,αφίνομεν να επιδράσουν επί της λαμβανομένης 1,4-διφαινυλο 2,6-δικετοπυροζολιδίνης αλκυλαλογονίδια ήοραλκυλολογονίδιο παρουσία αλκαλικών μέσων. Process for the preparation of 1,4-diphenyl-3,5-dicetopyrazolidine and its derivatives of the general formula: [*] wherein R1 means hydrogen, alkyl, aryl or aralkyl, and R2 means hydrogen, alkyl or aralkyl, or salts thereof with inorganic and organic bases, thereby distinguishing that phenylmalonic acid, dialogyl ester or dialkyl ester then concentrated with phenylhydrazine, or its derivatives at the β-position are substituted by alkyl, and, if desired, allowed to act on the obtained 1,4-diphenyl 2,6-dicetopyrozolidine alkyl alkyl or alkyl alkyl.

GR530116032A 1953-09-05 1953-09-05 METHOD OF MANUFACTURING 1, 4 - DIPHENYL - 3, 5 DIKETOPYRAZOLIDINE AND ITS PRODUCERS. GR16032B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR530116032A GR16032B (en) 1953-09-05 1953-09-05 METHOD OF MANUFACTURING 1, 4 - DIPHENYL - 3, 5 DIKETOPYRAZOLIDINE AND ITS PRODUCERS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR530116032A GR16032B (en) 1953-09-05 1953-09-05 METHOD OF MANUFACTURING 1, 4 - DIPHENYL - 3, 5 DIKETOPYRAZOLIDINE AND ITS PRODUCERS.

Publications (1)

Publication Number Publication Date
GR16032B true GR16032B (en) 1955-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
GR530116032A GR16032B (en) 1953-09-05 1953-09-05 METHOD OF MANUFACTURING 1, 4 - DIPHENYL - 3, 5 DIKETOPYRAZOLIDINE AND ITS PRODUCERS.

Country Status (1)

Country Link
GR (1) GR16032B (en)

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