GR13781B - METHOD OF PREPARATION OF MONOESTERS IN POSITION 3 OF D - (-) THREO - 1 - P - NITROPHENYL - 2 - DICLORACETAMID - 1, 3 - PROPANODIOL. - Google Patents

METHOD OF PREPARATION OF MONOESTERS IN POSITION 3 OF D - (-) THREO - 1 - P - NITROPHENYL - 2 - DICLORACETAMID - 1, 3 - PROPANODIOL.

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Publication number
GR13781B
GR13781B GR520113781A GR520113781A GR13781B GR 13781 B GR13781 B GR 13781B GR 520113781 A GR520113781 A GR 520113781A GR 520113781 A GR520113781 A GR 520113781A GR 13781 B GR13781 B GR 13781B
Authority
GR
Greece
Prior art keywords
threo
monoesters
nitrophenyl
preparation
dicloracetamid
Prior art date
Application number
GR520113781A
Other languages
Greek (el)
Original Assignee
Carlo Erba S.P.A.
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 Carlo Erba S.P.A. filed Critical Carlo Erba S.P.A.
Priority to GR520113781A priority Critical patent/GR13781B/en
Publication of GR13781B publication Critical patent/GR13781B/en

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Abstract

έθοδος παρασκευής μονοεστέρων της χλωραμφαινικόλης του γενικού τύπου: (ΤΥΠΟΣ Ι) ένθα Αc είναι μία οξύρριζα αλειφατική ή αρωματική, χαρακτηριζομένη εκ της ακυλιώσεως, με εν ακυλιωτικόν μέσον, του προϊόντος συμπυκνώσεως καταλλήλων καρβονιλο-παραγώγων με Ι-θρεο-1-χ-νιτροφαινυλο-2-αμινο-1,3-προπανοδιόλην, εκ της διασπάσεως του λαμβανομένου ούτω παραγώγου δι' ενός οξέος, ή, εις τηνπερίπτωσιν του οξυμεθυλενοκαμφουρικού παραγώγου, διά βρωμίου, και εκ της διχλωρακετυλιώσεως των σχηματιζομένων αλάτων δι' ενός διχλωρακετυλιωτικού μέσου εις τρόπον ώστε να έχωμεν τον μονοεστέρα της χλωραμφαινικόλης.Method for the preparation of chloramphenicol monoesters of general formula: (TYPE I) in Ac is an aliphatic or aromatic acid radical, characterized by the acylation, by an acylating agent, of the concentrate of suitable carbonyl derivatives with L-threo-1-x-nitrophenyl-2-amino-1,3-propanose of the derivative thus obtained by an acid, or, in the case of the oxymethylene camphor derivative, by bromine, and by the dichloroacetylation of the salts formed by a dichloroacetylating agent so as to have the monoacid.

GR520113781A 1952-05-06 1952-05-06 METHOD OF PREPARATION OF MONOESTERS IN POSITION 3 OF D - (-) THREO - 1 - P - NITROPHENYL - 2 - DICLORACETAMID - 1, 3 - PROPANODIOL. GR13781B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR520113781A GR13781B (en) 1952-05-06 1952-05-06 METHOD OF PREPARATION OF MONOESTERS IN POSITION 3 OF D - (-) THREO - 1 - P - NITROPHENYL - 2 - DICLORACETAMID - 1, 3 - PROPANODIOL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR520113781A GR13781B (en) 1952-05-06 1952-05-06 METHOD OF PREPARATION OF MONOESTERS IN POSITION 3 OF D - (-) THREO - 1 - P - NITROPHENYL - 2 - DICLORACETAMID - 1, 3 - PROPANODIOL.

Publications (1)

Publication Number Publication Date
GR13781B true GR13781B (en) 1952-08-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
GR520113781A GR13781B (en) 1952-05-06 1952-05-06 METHOD OF PREPARATION OF MONOESTERS IN POSITION 3 OF D - (-) THREO - 1 - P - NITROPHENYL - 2 - DICLORACETAMID - 1, 3 - PROPANODIOL.

Country Status (1)

Country Link
GR (1) GR13781B (en)

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