DE143902C - - Google Patents
Info
- Publication number
- DE143902C DE143902C DENDAT143902D DE143902DA DE143902C DE 143902 C DE143902 C DE 143902C DE NDAT143902 D DENDAT143902 D DE NDAT143902D DE 143902D A DE143902D A DE 143902DA DE 143902 C DE143902 C DE 143902C
- Authority
- DE
- Germany
- Prior art keywords
- carboxylic acid
- copper
- salts
- phenylglycine
- oxalylglycocou
- 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.)
- Active
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- RRTQTOBOLIGMED-UHFFFAOYSA-N 2-(carboxyamino)-2-phenylacetic acid Chemical compound OC(=O)NC(C(O)=O)C1=CC=CC=C1 RRTQTOBOLIGMED-UHFFFAOYSA-N 0.000 claims description 5
- 150000001447 alkali salts Chemical class 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- IKCLCGXPQILATA-UHFFFAOYSA-N 2-Chlorobenzoic acid Chemical compound OC(=O)C1=CC=CC=C1Cl IKCLCGXPQILATA-UHFFFAOYSA-N 0.000 claims description 3
- 150000001879 copper Chemical class 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 235000013905 glycine and its sodium salt Nutrition 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 7
- -1 oxalyl compound Chemical class 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229940072033 potash Drugs 0.000 description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 3
- 235000015320 potassium carbonate Nutrition 0.000 description 3
- 230000002378 acidificating Effects 0.000 description 2
- 125000003431 oxalo group Chemical group 0.000 description 2
- 159000000001 potassium salts Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IKCLCGXPQILATA-UHFFFAOYSA-M 2-chlorobenzoate Chemical compound [O-]C(=O)C1=CC=CC=C1Cl IKCLCGXPQILATA-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
In der Patentschrift 142507 wurde gezeigt, daß beim Kochen wässriger Lösungen molekularer Mengen o-Chlorbenzoesäure und GIykokoll, beide in Form ihrer Alkalisalze, in Gegenwart kohlensaurer Alkalien und bei Anwesenheit geringer Mengen von Kupfer oder Kupfersalzen glatt die Salze der Phenylglycino-carbonsäure entstehen.In the patent specification 142507 it was shown that when aqueous solutions are boiled, molecular Amounts of o-chlorobenzoic acid and glycol, both in the form of their alkali salts, in Presence of carbonic alkalis and in the presence of small amounts of copper or Copper salts smooth the salts of phenylglycino-carboxylic acid develop.
Nun bildet bekanntlich das Glykokoll eine Oxalylverbindung, das Oxalyldiglykokoll, welche vermöge ihrer Schwerlöslichkeit in Wasser ein bequemes Mittel bietet, das Glykokoll aus seinen wässrigen Lösungen abzuscheiden und in reiner Form darzustellen.As is well known, the glycocoll forms an oxalyl compound, the oxalyl diglycoll, which by virtue of its poor solubility in water, glycocolla offers a convenient means from its Separate aqueous solutions and present them in pure form.
Es wurde nun gefunden, daß das Oxalyldiglykokoll, in Form seines Alkalisalzes an Stelle des Glykokolls in obigen Prozeß eingeführt, mit o-Chlorbenzoesäure nicht die erwartete Oxalyldiphenylglycin-di-o-carbonsäure, sondern die Phenylglycincarbonsäure selbst in guter Ausbeute liefert.It has now been found that the oxalyl diglycoll, in the form of its alkali salt Place of the glycocolla introduced into the above process, with o-chlorobenzoic acid not the expected one Oxalyldiphenylglycine-di-o-carboxylic acid, but the phenylglycine carboxylic acid itself gives a good yield.
Die praktische Ausführung des Verfahrens kann z. B. etwa in folgender Weise durchgeführt werden:The practical implementation of the method can e.g. B. carried out approximately in the following manner will:
195 Teile o-chlorbenzoesaures Kali, 102 Teile Oxalyldiglykokoll, gelöst in der berechneten Menge Kalilauge, 140 Teile Pottasche und 0,5 bis ι Teil Kupferpulver werden in konzentrierter wässriger Lösung 3 bis 4 Stunden unter Rückflußkühlung zum Sieden erhitzt, wobei sich Kristalle des neutralen Kalisalzes der Phenylglycincarbonsäure abscheiden. Nach beendeter Umsetzung wird mit heißem Wasser verdünnt, bis alles klar gelöst ist, worauf man unter Rühren in verdünnte Mineralsäure einfließen läßt; dabei scheidet sich die Phenylglycin-o-carbonsäure ab.195 parts of o-chlorobenzoate of potash, 102 parts Oxalyl diglycol, dissolved in the calculated amount of potassium hydroxide, 140 parts of potash and 0.5 to ι part of copper powder are taken in concentrated aqueous solution for 3 to 4 hours The reflux cooling is heated to the boil, crystals of the neutral potassium salt being formed Separate phenylglycine carboxylic acid. When the reaction is complete, hot water is used diluted until everything is clearly dissolved, whereupon it is poured into dilute mineral acid with stirring leaves; the phenylglycine-o-carboxylic acid separates out.
Verwendet man im obigen Ansätze bloß die halbe Menge der dort angegebenen Pottasche, so scheidet sich beim Kochen das bekannte, schwerlösliche saure Kaliumsalz der Phenylglycin-o-carbonsäure ab.If you only use half the amount of the potash given in the above approach, the well-known, sparingly soluble, acidic potassium salt of phenylglycine-o-carboxylic acid separates out during cooking away.
An Stelle des metallischen Kupfers kann man auch beliebige Kupfersalze verwenden.Any copper salts can also be used in place of the metallic copper.
Aus den sauren Filtrationen der Phenylglycin-o-carbonsäure kann die Oxalsäure als Calciumsalz ausgefüllt und in bekannter Weise regeneriert werden.From the acidic filtrations of phenylglycine-o-carboxylic acid The oxalic acid can be filled in as a calcium salt and in a known manner be regenerated.
Das Verfahren erleidet keine wesentliche Änderung, wenn man im obigen Ansätze die Kalisalze durch andere Alkalisalze ersetzt.The process does not suffer any significant change if one uses the above approaches Potash salts replaced by other alkali salts.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE143902C true DE143902C (en) |
Family
ID=411372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT143902D Active DE143902C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE143902C (en) |
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