CH233734A - Process for the preparation of an aromatic carboxamide. - Google Patents
Process for the preparation of an aromatic carboxamide.Info
- Publication number
- CH233734A CH233734A CH233734DA CH233734A CH 233734 A CH233734 A CH 233734A CH 233734D A CH233734D A CH 233734DA CH 233734 A CH233734 A CH 233734A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- benzoyl
- preparation
- oxy
- amino
- Prior art date
Links
Description
Verfahren zur Darstellung eines aromatischen Carbonsäureamids. Das vorliegende Patent betrifft ein Ver fahren zur Darstellung von Di- (2'-oxy- benzoyl)-2-a.mino-thiazol, welches -dadurch ge kennzeichnet ist, dass man 2-A:cet:o:xy-benzoyl- chlori.d und 2-(2'-Oxy-benzoyl)-amino-thiazol aufeinander einwirken lässt.
<I>Beispiel:</I> 4,5 g 2-(2'-Oxy-benzoyl)-amino-thiazol werden in. der berechneten Menge n/2 Natron- lauge gelöst. Unter lebhaftem Umrühren gibt ma.n bei Temperaturen um 30 C 4,4 g 2-Acet- oxy-benzoylchloarid und 40 cm' n/2 Natron lauge in kleinen Portionen zu.
Nach einigem Stehen wird mit 10%iger Salzsäure neutra lisiert und das ausfallende Reaktionsprodukt abgetrennt. Smp. naeh wiederholtem Um- kristatllisieren 138 (korr.); dae Produkt be sitzt die Formel
EMI0001.0033
Die Analyse zeigt folgende Werte:
EMI0001.0035
C1;H12O,N@S <SEP> Ber. <SEP> C <SEP> 60,0; <SEP> H <SEP> 3,5; <SEP> N <SEP> 8,2 <SEP> %,
<tb> Gef. <SEP> C <SEP> 60,1; <SEP> H <SEP> 4,0; <SEP> N <SEP> 8,3 <SEP> % <SEP> .
Das neue Produkt soll als Ausgangsetoff für die Herstellung von therapeutischen Pro-
EMI0002.0001
dukten <SEP> und <SEP> al,s <SEP> lianservierungsmittel <SEP> Ver wend'ung <SEP> finden.
Process for the preparation of an aromatic carboxamide. The present patent relates to a process for the preparation of di- (2'-oxy-benzoyl) -2-a.mino-thiazole, which is characterized in that 2-A: cet: o: xy-benzoyl- chlori.d and 2- (2'-oxy-benzoyl) -amino-thiazole can act on each other.
<I> Example: </I> 4.5 g 2- (2'-oxy-benzoyl) -amino-thiazole are dissolved in the calculated amount of n / 2 sodium hydroxide solution. While stirring vigorously, add 4.4 g of 2-acetoxy-benzoyl chloride and 40 cm / 2 sodium hydroxide solution in small portions at temperatures around 30 ° C.
After standing for a while, it is neutralized with 10% hydrochloric acid and the reaction product which precipitates out is separated off. After repeated recrystallization 138 (corr.); the product has the formula
EMI0001.0033
The analysis shows the following values:
EMI0001.0035
C1; H12O, N @ S <SEP> calc. <SEP> C <SEP> 60.0; <SEP> H <SEP> 3.5; <SEP> N <SEP> 8.2 <SEP>%,
<tb> Found <SEP> C <SEP> 60.1; <SEP> H <SEP> 4.0; <SEP> N <SEP> 8.3 <SEP>% <SEP>.
The new product is intended to be used as a starting material for the manufacture of therapeutic products
EMI0002.0001
Products <SEP> and <SEP> al, s <SEP> lianservants <SEP> find use <SEP>.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH228933T | 1942-04-17 | ||
CH233734T | 1942-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH233734A true CH233734A (en) | 1944-08-15 |
Family
ID=25727278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH233734D CH233734A (en) | 1942-04-17 | 1942-04-17 | Process for the preparation of an aromatic carboxamide. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH233734A (en) |
-
1942
- 1942-04-17 CH CH233734D patent/CH233734A/en unknown
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