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GB752003A - Process for the preparation of 2-amino-penthiazoline and derivatives and salts thereof - Google Patents

Process for the preparation of 2-amino-penthiazoline and derivatives and salts thereof

Info

Publication number
GB752003A
GB752003A GB9444/54A GB944454A GB752003A GB 752003 A GB752003 A GB 752003A GB 9444/54 A GB9444/54 A GB 9444/54A GB 944454 A GB944454 A GB 944454A GB 752003 A GB752003 A GB 752003A
Authority
GB
United Kingdom
Prior art keywords
aminopenthiazoline
preparation
derivatives
salt
salts
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB9444/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALFONS SCHOEBERL
Original Assignee
ALFONS SCHOEBERL
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 ALFONS SCHOEBERL filed Critical ALFONS SCHOEBERL
Publication of GB752003A publication Critical patent/GB752003A/en
Expired legal-status Critical Current

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  • Thiazole And Isothizaole Compounds (AREA)

Abstract

The invention comprises (1) 2-dininopenthiazoline, 2-aminopenthiazoline-4-carboxylic acid and their salts (e.g. with hydrogen halides) and functional derivatives (e.g. 2-monoacyl- and 2-diacylaminopenthiazolines); and (2) the preparation thereof, which comprises treating at ordinary or elevated temperatures an aqueous solution of (a) g -thiocyanatopropylamine (which may be prepared in situ from g -bromo-propylamine hydrobrimide and potassium thiocyanate), or a salt thereof, with a weak alkali (e.g. alkali carbonates or cyanides); (b) homocystamine, or a salt thereof, with an alkali metal cyanide; and (c) homocystine, or a derivative thereof, with an alkali metal cyanide; if desired, the products being further treated with acylating agents in an aqueous alkaline or organic solvent, preferably in presence of acid acceptors (e.g. pyridine), to give the corresponding 2-diacylamino derivatives, from which the monoacyl compounds are obtained by treatment with a solution of hydrogen chloride in benzol. The examples describe the preparation of 2-aminopenthiazoline and the hydrobromide thereof, 2-aminopenthiazoline-4-carboxylic acid and the copper salt thereof, 2-dibenzoylaminopenthiazoline and 2-bis-benzenesulphonylaminopenthiazoline.
GB9444/54A 1953-04-02 1954-03-31 Process for the preparation of 2-amino-penthiazoline and derivatives and salts thereof Expired GB752003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE752003X 1953-04-02

Publications (1)

Publication Number Publication Date
GB752003A true GB752003A (en) 1956-07-04

Family

ID=6653071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9444/54A Expired GB752003A (en) 1953-04-02 1954-03-31 Process for the preparation of 2-amino-penthiazoline and derivatives and salts thereof

Country Status (1)

Country Link
GB (1) GB752003A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137628A (en) * 1964-06-16 Analgesic and diuretic z-acetylamino
US3235551A (en) * 1966-02-15 Novel derivatives of

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137628A (en) * 1964-06-16 Analgesic and diuretic z-acetylamino
US3235551A (en) * 1966-02-15 Novel derivatives of

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