DE1044104B - Process for the production of particles of dioxolane - Google Patents

Process for the production of particles of dioxolane

Info

Publication number
DE1044104B
DE1044104B DESCH21097A DESC021097A DE1044104B DE 1044104 B DE1044104 B DE 1044104B DE SCH21097 A DESCH21097 A DE SCH21097A DE SC021097 A DESC021097 A DE SC021097A DE 1044104 B DE1044104 B DE 1044104B
Authority
DE
Germany
Prior art keywords
dioxolane
general formula
ketols
production
particles
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.)
Pending
Application number
DESCH21097A
Other languages
German (de)
Inventor
Dr Heinrich Pfeiffer
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.)
Bayer Pharma AG
Original Assignee
Schering AG
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 Schering AG filed Critical Schering AG
Priority to DESCH21097A priority Critical patent/DE1044104B/en
Publication of DE1044104B publication Critical patent/DE1044104B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D317/00Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D317/08Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
    • C07D317/10Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
    • C07D317/32Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D317/34Oxygen atoms
    • C07D317/40Vinylene carbonate; Substituted vinylene carbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von Abkömmlingen des Dioxolans Gegenstand der Patentanmeldung Sch 20850 IV b/ 12 q ist ein Verfahren zur Herstellung von Abkömmlingen der Dioxolane der allgemeinen Formel in der R1 einen einwertigen Kohlenwasserstoffrest, R2 und R3 Wasserstoffatome oder einwertige Kohlenwasserstoffreste oder R2 und R3 auch gemeinsam einen zweiwertigen Kohlenwasserstoffrest und Hal ein Halogenatom bedeuten, welches dadurch gekennzeichnet ist, daß man a-Ketole der allgemeinen Formel in der R1, R2 und R3 dasselbe, wie vorstehend angegeben, bedeuten, R1 jedoch, falls R2 und/oder R3 Wasserstoffatome darstellen, in Konjugation zur Doppelbindung der Ketogruppe keine mehrfache Bindung enthält, mit Kohlensäuredihalogeniden in Gegenwart tertiärer Basen umsetzt.Process for the preparation of derivatives of the dioxolane The subject of the patent application Sch 20850 IV b / 12 q is a process for the preparation of derivatives of the dioxolanes of the general formula in which R1 is a monovalent hydrocarbon radical, R2 and R3 are hydrogen atoms or monovalent hydrocarbon radicals, or R2 and R3 together are also a divalent hydrocarbon radical and Hal is a halogen atom, which is characterized in that α-ketols of the general formula in which R1, R2 and R3 have the same meaning as indicated above, but R1, if R2 and / or R3 represent hydrogen atoms, does not contain a multiple bond in conjugation to the double bond of the keto group, reacts with carbonic acid dihalides in the presence of tertiary bases.

In weiterer Ausbildung des Verfahrens zur Herstellung von Abkömmlingen des Dioxolans durch Umsetzung von a-Ketolen mit Kohlensäuredihalogeniden in Gegenwart tertiärer Basen gemäß Patentanmeldung Sch 20850 IV b/12 q wurde nun gefunden, daß man Dioxolen-one-(2) der allgemeinen Formel in der R1 einen Arylrest und R2 ein Wasserstoffatom oder einen Kohlenwasserstoffrest bedeutet, erhält, wenn man a-Ketole der allgemeinen Formel Rl-CO-CHOH-R2 umsetzt.In a further development of the process for the preparation of derivatives of dioxolane by reacting α-ketols with carbonic acid dihalides in the presence of tertiary bases according to patent application Sch 20850 IV b / 12 q, it has now been found that dioxolen-one- (2) of the general formula in which R1 denotes an aryl radical and R2 denotes a hydrogen atom or a hydrocarbon radical, is obtained when a-ketols of the general formula R1-CO-CHOH-R2 are reacted.

Hierbei hat sich, wie bei dem Verfahren gemäß der Patentanmeldung Sch 20850 IV b/ 12q, die allmähliche Zugabe der tertiären Base zu den in einem inerten Lösungsmittel vereinigten beiden anderen Reaktionspartnern (a-Ketol und Kohlensäuredihalogenid) als besonders zweckmäßig erwiesen.As with the method according to the patent application Sch 20850 IV b / 12q, the gradual addition of the tertiary base to the in an inert Solvent combined the other two reactants (a-ketol and carbonic acid dihalide) proved to be particularly useful.

Die Verfahrensprodukte sollen als Heilmittel oder als Ausgangsstoffe zur Herstellung von solchen technisch verwendet werden. Beispiel 1 Bei 0, bis 5° C werden 6,8 g Benzoylkarbinol und 6 g Phosgen in 110 ccm absolutem Toluol vermischt und dann unter Rühren in 30 Minuten tropfenweise mit 8 ccm 2,4,6-Kollidin in 20 ccm Toluol versetzt. Es wird noch 2 Stunden unter Eiskühlung weiter gerührt und anschließend 14 Stunden im Eisschrank aufbewahrt. Dann wird der Ansatz mit Wasser, verdünnter Salzsäure und Wasser gewaschen und die Toluollösung mit Natriumsulfat getrocknet. Beim Einengen im Vakuum bleibt ein 01 zurück, das bald unter Salzsäureabspaltung kristallin erstarrt. Ausbeute 7,1 g (88'°/a der Theorie), F. 75 bis 81° C. Durch Umkristallisieren aus Tetrachlorkohlenstoff erhält man das 4-Phenyl-dioxolen-on-(2) in farblosen Blättchen vom F. 80 bis 84° C. Beispiel 2 21,2- Benzoin werden nach Beispiel 1 in 130 ccm Toluol mit 11 g Phosgen und 14 ccm Kollidin in 30 ccm Toluol umgesetzt. Die mit verdünnter Salzsäure und Wasser gewaschene Toluollösung wird im Vakuum destilliert; bei Kp.3 gehen zwischen 187 und 188° C 15,8 g rohes 4,5-Diphenyl-dioxolen-on-(2) über; durch Umkristallisieren aus 200 ccm Hexan werden 13 g (54% der Theorie) der Verbindung vom F. 74 bis 76° C erhalten. Beispiel 3 Analog Beispiel 1 werden aus 40g Anisoin mit 16 g Phosgen und 21 ccm Kollidin in 230 ccm Toluol 33 g (750/9 der Theorie) 4,5-Dianisyl-dioxolen-on-(2) vom F. 170 bis 173° C erhalten.The process products are intended to be used technically as medicinal products or as starting materials for the production of such. EXAMPLE 1 6.8 g of benzoyl carbinol and 6 g of phosgene are mixed in 110 cc of absolute toluene at 0 to 5 ° C. and 8 cc of 2,4,6-collidine in 20 cc of toluene are then added dropwise with stirring over 30 minutes. The mixture is stirred for a further 2 hours with ice cooling and then stored in the refrigerator for 14 hours. The batch is then washed with water, dilute hydrochloric acid and water and the toluene solution is dried with sodium sulfate. Concentration in vacuum is a 01 back, which soon solidifies in crystalline form from hydrochloric acid elimination. Yield 7.1 g (88 ° / a of theory), mp 75 to 81 ° C. Recrystallization from carbon tetrachloride gives 4-phenyl-dioxolen-one- (2) in colorless flakes with a mp of 80 to 84 ° C. Example 2 21,2 benzoin are reacted according to Example 1 in 130 cc of toluene with 11 g of phosgene and 14 cc of collidine in 30 cc of toluene. The toluene solution washed with dilute hydrochloric acid and water is distilled in vacuo; at bp 3, 15.8 g of crude 4,5-diphenyl-dioxolen-one- (2) pass over between 187 and 188 ° C .; 13 g (54% of theory) of the compound with a melting point of 74 ° to 76 ° C. are obtained by recrystallization from 200 cc of hexane. Example 3 Analogously to Example 1, 40 g of anisoin with 16 g of phosgene and 21 cc of collidine in 230 cc of toluene are converted into 33 g (750/9 of theory) of 4,5-dianisyl-dioxolen-one- (2) with a melting point of 170 ° to 173 ° C received.

Claims (1)

PATENTANSPRUCH: Weiterausbildung des Verfahrens zur Herstellung von Abkömmlingen des Dioxolans durch Umsetzung von a-Ketolen mit Kohlensäuredihalogeniden in Gegenwart tertiärer Basen gemäß Patentanmeldung Sch 20850 IV b / 12q, dadurch gekennzeichnet, daß man a-Ketole der allgemeinen Formel Rl-CO-CHOH-R2, in der R1 einen Arylrest und R2 ein Wasserstoffatom oder einen Kohlenwasserstoffrest bedeutet, zu Dioxolenonen-(2) der allgemeinen Formel umsetzt. PATENT CLAIM: Further development of the process for the preparation of derivatives of dioxolane by reacting a-ketols with carbonic acid dihalides in the presence of tertiary bases according to patent application Sch 20850 IV b / 12q, characterized in that a-ketols of the general formula Rl-CO-CHOH-R2 , in which R1 is an aryl radical and R2 is a hydrogen atom or a hydrocarbon radical, to dioxolenones- (2) of the general formula implements.
DESCH21097A 1956-11-14 1956-11-14 Process for the production of particles of dioxolane Pending DE1044104B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH21097A DE1044104B (en) 1956-11-14 1956-11-14 Process for the production of particles of dioxolane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH21097A DE1044104B (en) 1956-11-14 1956-11-14 Process for the production of particles of dioxolane

Publications (1)

Publication Number Publication Date
DE1044104B true DE1044104B (en) 1958-11-20

Family

ID=7428945

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH21097A Pending DE1044104B (en) 1956-11-14 1956-11-14 Process for the production of particles of dioxolane

Country Status (1)

Country Link
DE (1) DE1044104B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020290A (en) * 1959-10-14 1962-02-06 Jefferson Chem Co Inc Preparation of unsaturated compounds
US3125582A (en) * 1964-03-17 Phenylvinylene cyclic carbonates
US3359240A (en) * 1963-01-14 1967-12-19 Dow Chemical Co Copolymers containing phenylvinylene carbonate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125582A (en) * 1964-03-17 Phenylvinylene cyclic carbonates
US3020290A (en) * 1959-10-14 1962-02-06 Jefferson Chem Co Inc Preparation of unsaturated compounds
US3359240A (en) * 1963-01-14 1967-12-19 Dow Chemical Co Copolymers containing phenylvinylene carbonate

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