GR20563B - METHOD FOR THE PRODUCTION OF THIAXANTHENE SUBSTITUTES IN THE 9-POSITION. - Google Patents

METHOD FOR THE PRODUCTION OF THIAXANTHENE SUBSTITUTES IN THE 9-POSITION.

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Publication number
GR20563B
GR20563B GR590120563A GR590120563A GR20563B GR 20563 B GR20563 B GR 20563B GR 590120563 A GR590120563 A GR 590120563A GR 590120563 A GR590120563 A GR 590120563A GR 20563 B GR20563 B GR 20563B
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GR
Greece
Prior art keywords
halogen
formula
thiaxanthene
substitutes
production
Prior art date
Application number
GR590120563A
Other languages
Greek (el)
Original Assignee
Kefalas A/S
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 Kefalas A/S filed Critical Kefalas A/S
Priority to GR590120563A priority Critical patent/GR20563B/en
Publication of GR20563B publication Critical patent/GR20563B/en

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Abstract

έθοδος διά την παρασκευήν βασικών υποκατεστημένωνθειοξανθενίων του τύπου (Ι) είς τον οποίον το R δηλοί υδρογόνον, αλογόνον, ή μίαν ομάδα μεθοξυ, ώς και των διά προσθήκης οξέος αλάτων αυτών, διακρινομένη εκ τούτου, ότι ενώσεις του τύπου (ΙΙ) είς τονοποίον το R έχει την ανωτέρω δοθείσαν σημασίαν, υποβάλλομεν είς αντίδρασιν με ένα παράγοντα αφυδατώσεως την δέ προκύπτουσαν ακόρεστον ένωσιν υποβάλλομεν είς αντίδρασιν με ένα παράγοντα μεθυλιώσεως, ήμε ένα παράγοντα αφυδατώσεως και μεθυλιώσεως ταυτοχρόνως, μεθ'ο εκ του μίγματος της αντιδράσεως, τοσχηματισθέν θειαξανθένιον απομονούται υπό την μορφήν ταύτην ή υπό την μορφήν ενός διά προσθήκης οξέος άλατος και είς περίπτωσιν καθ' ήν το R δηλοί αλογόνον η μίαν ομάδα μεθοξυ, το trans ισομερές απομονούται διά κλασματικής κρυσταλλώσεως. A process for the preparation of basic substituted thioxanthenes of formula (I) in which R denotes hydrogen, halogen, or a group of methoxy, as well as their acid addition salts, thereby distinguishing that compounds of formula (II) Having the above importance, reacting with a dehydrating agent does not result in an unsaturated compound reacting with a methylating agent, or a dehydrating and methylating agent being simultaneously or in the form of an acid addition salt and in the case where R is halogen or a methoxy group, the trans isomer is isolated by fractional crystallization.

GR590120563A 1959-04-25 1959-04-25 METHOD FOR THE PRODUCTION OF THIAXANTHENE SUBSTITUTES IN THE 9-POSITION. GR20563B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR590120563A GR20563B (en) 1959-04-25 1959-04-25 METHOD FOR THE PRODUCTION OF THIAXANTHENE SUBSTITUTES IN THE 9-POSITION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR590120563A GR20563B (en) 1959-04-25 1959-04-25 METHOD FOR THE PRODUCTION OF THIAXANTHENE SUBSTITUTES IN THE 9-POSITION.

Publications (1)

Publication Number Publication Date
GR20563B true GR20563B (en) 1960-02-25

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ID=36861642

Family Applications (1)

Application Number Title Priority Date Filing Date
GR590120563A GR20563B (en) 1959-04-25 1959-04-25 METHOD FOR THE PRODUCTION OF THIAXANTHENE SUBSTITUTES IN THE 9-POSITION.

Country Status (1)

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GR (1) GR20563B (en)

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