DE824201C - Process for the production of calcium almond - Google Patents

Process for the production of calcium almond

Info

Publication number
DE824201C
DE824201C DEW4545A DEW0004545A DE824201C DE 824201 C DE824201 C DE 824201C DE W4545 A DEW4545 A DE W4545A DE W0004545 A DEW0004545 A DE W0004545A DE 824201 C DE824201 C DE 824201C
Authority
DE
Germany
Prior art keywords
calcium
almond
production
expediently
suspension
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
DEW4545A
Other languages
German (de)
Inventor
Dr Josef Wimmer
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.)
ALEXANDER WACKE GES fur ELEKT
Original Assignee
ALEXANDER WACKE GES fur ELEKT
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 ALEXANDER WACKE GES fur ELEKT filed Critical ALEXANDER WACKE GES fur ELEKT
Priority to DEW4545A priority Critical patent/DE824201C/en
Application granted granted Critical
Publication of DE824201C publication Critical patent/DE824201C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von mandelsaurem Calcium Gegenstand der Erfindung ist die 1-Lerstellung \-rni mandelsaurem Calcium aus 1u,, oj-Dihalogenacetophenonen. Das Verfahren besteht im wesentlichen darin, daß man auf w, w-Dihalogenacetophenorie eine Suspension von Ätzkalk in Wasser, -zweckmäßig bei erhöhter Temperatur, .einwirken läßt. Es entsteht,dadurch das Calciumsalz der Mandelsäure. Nach Verseifung der Halogenatome wird 1>e1 dieser Umsetzung das als Zwischenprodukt auftretende Dioxyacetophenon in die isomere Mandelsäure umgelagert, die als schwer lösliches Calcirirnsalz fast quantitativ ausfällt. Beispiel 188 gDichloracetoplienon-C. H5 * C O # C H CIQ-werden mit einer Suspension von etwa 120 g Calciumhydroxyd in 5oo ccm Wasser to Stunden bei 400 verrührt. Nachdem durch Analyse festgestellt ist, daß in der wäßrigen Flüssigkeit etwa ZOOO ÄqUivalente Calciumchlori,d gelöst sind, wird der gelbliche Niederschlag des Cälciummandelates abfiltriert,gewaschen und getrocknet. Manerhält 168g rohes Calciummandelat, was einer Ausbeute von 98°/o entspricht.Process for the production of calcium almond is the subject of Invention is the production of almond acid calcium from 1u ,, oj-dihaloacetophenones. The process essentially consists in following on w, w-dihaloacetophenorie a suspension of quick lime in water, - expediently at elevated temperature, leaves. This creates the calcium salt of mandelic acid. After saponification of the halogen atoms 1> e1 of this reaction is the intermediate dioxyacetophenone rearranged into the isomeric mandelic acid, which is almost a poorly soluble calcium salt is quantitative. Example 188 gDichloroacetoplienone-C. H5 * C O # C H CIQ-be with a suspension of about 120 g of calcium hydroxide in 500 ccm of water for hours stirred at 400. After it is determined by analysis that in the aqueous liquid about ZOOO equivalents of calcium chloride are dissolved, the yellowish precipitate becomes of the calcium mandrel filtered off, washed and dried. You get 168g raw Calcium almondate, which corresponds to a yield of 98 ° / o.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von mandelsaure in Calcium, dadurch gekennzeichnet, daß man auf (o, (o-Di'halogenacetophenone wäßrige Suspensionen von Ca-lcitumhydroxyd bei niedrigen Temperaturen, zweckmäßig bei 3o bis 4o°, einwirken läßt. PATENT CLAIM: Process for the preparation of almond acid in calcium, characterized in that (o, (o-Di'halogenacetophenone) aqueous suspensions of calcium hydroxide are allowed to act at low temperatures, expediently at 3o to 4o °.
DEW4545A 1950-11-16 1950-11-16 Process for the production of calcium almond Expired DE824201C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW4545A DE824201C (en) 1950-11-16 1950-11-16 Process for the production of calcium almond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW4545A DE824201C (en) 1950-11-16 1950-11-16 Process for the production of calcium almond

Publications (1)

Publication Number Publication Date
DE824201C true DE824201C (en) 1951-12-10

Family

ID=7592346

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW4545A Expired DE824201C (en) 1950-11-16 1950-11-16 Process for the production of calcium almond

Country Status (1)

Country Link
DE (1) DE824201C (en)

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