GR26405B - METHOD FOR THE MANUFACTURE OF PYRAZOLE PRODUCERS. - Google Patents

METHOD FOR THE MANUFACTURE OF PYRAZOLE PRODUCERS.

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Publication number
GR26405B
GR26405B GR600126405A GR600126405A GR26405B GR 26405 B GR26405 B GR 26405B GR 600126405 A GR600126405 A GR 600126405A GR 600126405 A GR600126405 A GR 600126405A GR 26405 B GR26405 B GR 26405B
Authority
GR
Greece
Prior art keywords
general formula
group
manufacture
denotes
alkyl group
Prior art date
Application number
GR600126405A
Other languages
Greek (el)
Original Assignee
Sandoz 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 Sandoz A.G. filed Critical Sandoz A.G.
Priority to GR600126405A priority Critical patent/GR26405B/en
Publication of GR26405B publication Critical patent/GR26405B/en

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Abstract

έθοδος δια την πρασκευήν νέων παραγώγων της πυραζόλης, του γενικού τύπου: [*] ή των ταυτομερών μορφών αυτών, εις τον οποίον τα R1 και R2 δηλούν μίαν κατωτέραν, ευθείαν ή διακλαδισμένην αλκυλικήν ομάδα, το Α δηλοί μίαν κεκορεσμένην αλκυλενικήν άλυσονμετά το πολύ δύο ατόμων άνθρακος, το R3 είναι υδρογόνον, ή ομού μετά του R2 δηλοί μίαν αιθυλενικήν ομάδα, το R4 είναι υδρογόνον, μία αλκυλική, τριαλογονομεθυλική, μία ενδεχομένως υποκατεστημένη μονοκυκλική αρυλική ή μία μονοκυκλική αραλκυλική ομάς, και το R5 δηλοί υδρογόνον, μίαν κατωτέραν αλκυλικήν ομάδα, μίαν ενδεχομένως δια χλωρίου, φθορίου ή κατωτέρου αλκυλικών ομάδων ή αλκοξυ-ομάδων άπαξ ή πολλαπλώς υποκατεστημένην μονοκυκλικήν αρυλικήν ομάδα, εν καρβολκοξυ υπόλοιπον ή εν καρβοξυ-υπόλοιπον, διακρινομένη εκ τούτου, ότι εν παράγωγον της υδραζίνης του γενικού τύπου ΙΙ: [*] εις τον οποίον ταR1, R2, R3 και Α έχουν την ανωτέρω δοθείσαν σημασίαν, είτε φέρομεν εις αντίδρασιν με ένα ακυλικόν ιμινοεστέρα του γενικού τύπου ΙΙΙ: [*] εις τον οποίον τα R4 και R5 έχουν την ανωτέρω δοθείσαν σημασίαν, και το Χ είναι μία κατωτέρα αλκυλική ομάς, προςπαραγωγήν ενώσεων του ανωτέρω τύπου Ι είτε συμπυκνούμεν μετά νιτριλίου των ακυλοξεικών οξέων του γενικού τύπου ΙV: [*] εις τον οποίον τα R4 και R5 έχουν την ανωτέρω δοθείσαν σημασίαν, το δε λαμβανόμενον προϊόν της συμπυκνώσεως, εις περίπτωσιν καθ' ην το R5 δηλοί την καρβαλκοξυ-ομάδα ενδεχομένως υποβάλλομεν εις σαπωνοποίησιν και αποκαρβοξυλίωσιν. Method for the manufacture of novel pyrazole derivatives of the general formula: [*] or of these tautomeric forms, wherein R1 and R2 denote a lower, straight or branched alkyl group, A denotes a saturated alkylene chain with a maximum of two carbon atoms, R3 is hydrogen, or a group after R2 . Substituted monocyclic aryl group, in carboxy residue or in carboxy residue, characterized in that as a hydrazine derivative of general formula II: [*] wherein R1, R2, R3 and A have the above significance, either reacting with an acyl iminoester of general formula III: [*] wherein R4 and R5 have the above meaning, and X is a lower alkyl group, producing compounds of the above formula I or concentrated with nitrile of the acyloacetic acids of general formula IV: [*] in which R4 and R5 have the above significance, and the product of the condensate obtained, in case R5 denotes the carboloxy group, may be subjected to saponification and decarboxylation.

GR600126405A 1960-07-02 1960-07-02 METHOD FOR THE MANUFACTURE OF PYRAZOLE PRODUCERS. GR26405B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR600126405A GR26405B (en) 1960-07-02 1960-07-02 METHOD FOR THE MANUFACTURE OF PYRAZOLE PRODUCERS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR600126405A GR26405B (en) 1960-07-02 1960-07-02 METHOD FOR THE MANUFACTURE OF PYRAZOLE PRODUCERS.

Publications (1)

Publication Number Publication Date
GR26405B true GR26405B (en) 1964-07-22

Family

ID=36865028

Family Applications (1)

Application Number Title Priority Date Filing Date
GR600126405A GR26405B (en) 1960-07-02 1960-07-02 METHOD FOR THE MANUFACTURE OF PYRAZOLE PRODUCERS.

Country Status (1)

Country Link
GR (1) GR26405B (en)

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