GR18564B - METHOD FOR THE PREPARATION OF THE 4-POSITIONS SUBSTITUTED 1, 2 - DIARYL - 3, 5 - DIOXO - PYRAZOLIDES. - Google Patents

METHOD FOR THE PREPARATION OF THE 4-POSITIONS SUBSTITUTED 1, 2 - DIARYL - 3, 5 - DIOXO - PYRAZOLIDES.

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Publication number
GR18564B
GR18564B GR560118564A GR560118564A GR18564B GR 18564 B GR18564 B GR 18564B GR 560118564 A GR560118564 A GR 560118564A GR 560118564 A GR560118564 A GR 560118564A GR 18564 B GR18564 B GR 18564B
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GR
Greece
Prior art keywords
diaryl
dioxo
preparation
substituted
pyrazolides
Prior art date
Application number
GR560118564A
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Greek (el)
Original Assignee
J. R. Geigy A.G.
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 J. R. Geigy A.G. filed Critical J. R. Geigy A.G.
Priority to GR560118564A priority Critical patent/GR18564B/en
Publication of GR18564B publication Critical patent/GR18564B/en

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  • Plural Heterocyclic Compounds (AREA)

Abstract

έθοδος προς παρασκευήν των εις την 4-θέσιν υποκατεστημένων 1,2-διαρυλο-3,5-διοξο-πυραζυλιδινών, διακρινομένη εκ τούτου, ότι εν ικανόν προς αντίδρασινθεμελιώδες παράγωγον ενός καρβονικού οξέος του γενικού τύπου: R - COOH εις τον οποίον η ομάς R-CO- σημαίναι το υπόλοιπον ενός ετεροκυκλικού, ενδεχομένως υποκατεστημένου καρβονικού οξέος, φέρομεν, ενδεχομένως παρουσία ενός μέσου συμπυκνώσεως, εις αντίδρασιν με εν μηλονυλοϋδραζοβενζόλιον του γενικού τύπου: [*] εις τον οποίον τα Ar1 και Ar2 δηλούν φαινυλικά υπόλοιπα άτινα δύνανται να είναι υποκατεστημένα κατά τον αυτόν ή διάφορον τρόπον. Process for the preparation of the 4-position substituted 1,2-diaryl-3,5-dioxo-pyrazylidines, characterized in that being capable of reacting a carboxylic acid derivative of the general formula: R - COOH wherein the R-CO- group is the residue of a heterocyclic, possibly substituted carboxylic acid, possibly in the presence of a concentrating agent, in reaction with a malonylhydrazobenzene of the general formula: [*] in which Ar1 and Ar2 denote phenyl atines may be substituted in the same or different manner.

GR560118564A 1956-06-09 1956-06-09 METHOD FOR THE PREPARATION OF THE 4-POSITIONS SUBSTITUTED 1, 2 - DIARYL - 3, 5 - DIOXO - PYRAZOLIDES. GR18564B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR560118564A GR18564B (en) 1956-06-09 1956-06-09 METHOD FOR THE PREPARATION OF THE 4-POSITIONS SUBSTITUTED 1, 2 - DIARYL - 3, 5 - DIOXO - PYRAZOLIDES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR560118564A GR18564B (en) 1956-06-09 1956-06-09 METHOD FOR THE PREPARATION OF THE 4-POSITIONS SUBSTITUTED 1, 2 - DIARYL - 3, 5 - DIOXO - PYRAZOLIDES.

Publications (1)

Publication Number Publication Date
GR18564B true GR18564B (en) 1958-03-20

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ID=36864564

Family Applications (1)

Application Number Title Priority Date Filing Date
GR560118564A GR18564B (en) 1956-06-09 1956-06-09 METHOD FOR THE PREPARATION OF THE 4-POSITIONS SUBSTITUTED 1, 2 - DIARYL - 3, 5 - DIOXO - PYRAZOLIDES.

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GR (1) GR18564B (en)

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