GR23283B - METHOD OF PREPARATION OF NEW ENTOLOGICAL ETHERS OF 3 - KETO - 5A - ANDROSTANIA. - Google Patents

METHOD OF PREPARATION OF NEW ENTOLOGICAL ETHERS OF 3 - KETO - 5A - ANDROSTANIA.

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Publication number
GR23283B
GR23283B GR610123283A GR610123283A GR23283B GR 23283 B GR23283 B GR 23283B GR 610123283 A GR610123283 A GR 610123283A GR 610123283 A GR610123283 A GR 610123283A GR 23283 B GR23283 B GR 23283B
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GR
Greece
Prior art keywords
keto
ethers
hydrogen
entological
androstania
Prior art date
Application number
GR610123283A
Other languages
Greek (el)
Original Assignee
Francesco Vismara 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 Francesco Vismara S.P.A. filed Critical Francesco Vismara S.P.A.
Priority to GR610123283A priority Critical patent/GR23283B/en
Publication of GR23283B publication Critical patent/GR23283B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

μέθοδος σχηματισμού ενολικών αιθέρων εχόντων τονεπόμενον τύπον: [*] ένθα R αντιπροσωπεύει υδρογονανθρακικήν ρίζαν ενέχουσαν από πέντε έως δέκα οκτώ, συμπεριλαμβανομένου, άτομα άνθρακος, R1 και R2 αντιπροσωπεύουν υδρογόνον ή μεθύλίόν και R3 αντιπροσωπεύει κετονικόν άτομον οξυγόνου ή μίαν ομάδα [*], ένθα Χ είναι υδρογόνον ή το ακυλικόν υπόλειμμα ενός αλκανοϊκού οξέος και R4 αντιπροσωπεύει υδρογόνον ή μίαν ρίζαν κατωτέρου υδρογονάνθρακος ενέχοντος από ένα έως τρία, συμπεριλαμβανομένου, άτομα άνθρακος, ήτις περιλαμβάνει υποβολήν ενός 3-αιθυλικούενολαιθέρος ενός Δ4-3-κετο-ανδροστενίου του τύπου: [*] ένθα R1, R2 και R3 είναι ως ορίζονται ανωτέρω, εις μίαν αντίδρασιν ανταλλαγής μετά μιας αλκοόλης του τύπου ROH, ένθα R έχει την ιδίαν έννοιαν ωςορίζεται ανωτέρω, παρουσία .................................................... εις μίαν καταλυτικήν υδρογόνωσιν δια μιας υπολογισμένης ............ υδρογόνου, προς υδρογόνωσιν του ενός μόνον δεσμού του Δ...... ..... συστήματος. method of forming enol ethers having the following formula: [*] wherein R represents a hydrocarbon radical comprising from five to eighteen, including carbon atoms; R1 and R2 represent hydrogen or methyl; and R3 represents a ketone oxygen atom or a group of represents a hydrogen or a lower hydrocarbon radical comprising from one to three, including carbon atoms, thus comprising submitting a 3-ethyl enol ether of a Δ4-3-keto-androstene of the formula: [*] wherein R1, R2 and R3 are as defined above, in an exchange reaction with an alcohol of the ROH type, wherein R has the same meaning as defined above, in the presence of .................. .................................. to a catalytic hydrogenation by a calculated ......... ... hydrogen, to hydrogenate a single bond of the D ...... ..... system.

GR610123283A 1961-10-10 1961-10-10 METHOD OF PREPARATION OF NEW ENTOLOGICAL ETHERS OF 3 - KETO - 5A - ANDROSTANIA. GR23283B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR610123283A GR23283B (en) 1961-10-10 1961-10-10 METHOD OF PREPARATION OF NEW ENTOLOGICAL ETHERS OF 3 - KETO - 5A - ANDROSTANIA.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR610123283A GR23283B (en) 1961-10-10 1961-10-10 METHOD OF PREPARATION OF NEW ENTOLOGICAL ETHERS OF 3 - KETO - 5A - ANDROSTANIA.

Publications (1)

Publication Number Publication Date
GR23283B true GR23283B (en) 1962-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
GR610123283A GR23283B (en) 1961-10-10 1961-10-10 METHOD OF PREPARATION OF NEW ENTOLOGICAL ETHERS OF 3 - KETO - 5A - ANDROSTANIA.

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GR (1) GR23283B (en)

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