CH200659A - Process for the production of 1,2-cholestenone-3. - Google Patents
Process for the production of 1,2-cholestenone-3.Info
- Publication number
- CH200659A CH200659A CH200659DA CH200659A CH 200659 A CH200659 A CH 200659A CH 200659D A CH200659D A CH 200659DA CH 200659 A CH200659 A CH 200659A
- Authority
- CH
- Switzerland
- Prior art keywords
- cholestenone
- cholestanone
- hydrogen halide
- split
- acetic acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 229960000583 acetic acid Drugs 0.000 claims description 7
- 239000012362 glacial acetic acid Substances 0.000 claims description 7
- 239000012433 hydrogen halide Substances 0.000 claims description 7
- 229910000039 hydrogen halide Inorganic materials 0.000 claims description 7
- 230000026030 halogenation Effects 0.000 claims description 4
- 238000005658 halogenation reaction Methods 0.000 claims description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052794 bromium Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229940093915 gynecological organic acid Drugs 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 235000005985 organic acids Nutrition 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims 2
- 235000011056 potassium acetate Nutrition 0.000 claims 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- PESKGJQREUXSRR-UHFFFAOYSA-N 5beta-cholestanone Natural products C1CC2CC(=O)CCC2(C)C2C1C1CCC(C(C)CCCC(C)C)C1(C)CC2 PESKGJQREUXSRR-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LVXRXFVUNNYVKA-XVNUJCEUSA-N BrC1CCC2CC[C@H]3[C@@H]4CC([C@@H]([C@]4(CC[C@@H]3[C@]2(C1)C)C)[C@H](C)CCCC(C)C)=O Chemical compound BrC1CCC2CC[C@H]3[C@@H]4CC([C@@H]([C@]4(CC[C@@H]3[C@]2(C1)C)C)[C@H](C)CCCC(C)C)=O LVXRXFVUNNYVKA-XVNUJCEUSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- QYIXCDOBOSTCEI-QCYZZNICSA-N (5alpha)-cholestan-3beta-ol Chemical compound C([C@@H]1CC2)[C@@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@H](C)CCCC(C)C)[C@@]2(C)CC1 QYIXCDOBOSTCEI-QCYZZNICSA-N 0.000 description 1
- PESKGJQREUXSRR-ZTPZMMAUSA-N 3-oxocholestane Chemical compound C1CC2CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 PESKGJQREUXSRR-ZTPZMMAUSA-N 0.000 description 1
- PESKGJQREUXSRR-UXIWKSIVSA-N 5alpha-cholestan-3-one Chemical compound C([C@@H]1CC2)C(=O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@H](C)CCCC(C)C)[C@@]2(C)CC1 PESKGJQREUXSRR-UXIWKSIVSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241001101998 Galium Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QJTAAHJJXWYZSK-UHFFFAOYSA-N [Br].CC(O)=O Chemical compound [Br].CC(O)=O QJTAAHJJXWYZSK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QYIXCDOBOSTCEI-UHFFFAOYSA-N alpha-cholestanol Natural products C1CC2CC(O)CCC2(C)C2C1C1CCC(C(C)CCCC(C)C)C1(C)CC2 QYIXCDOBOSTCEI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 230000002140 halogenating effect Effects 0.000 description 1
- 230000003054 hormonal effect Effects 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J9/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J75/00—Processes for the preparation of steroids in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Steroid Compounds (AREA)
Description
Verfahren zur Herstellung von di,2-Cholestenon-3. Gegenstand vorliegender Erfindung ist ein Verfahren zur Herstellung von A,,2-Chole- stenon-3.
Dieses Verfahren ist dadurch gekenn zeichnet, dass Cholestanon-3 durch Haloge- nieren in 2-Halogencholestanon-3 überge führt und dieses mit Halogenwasserstoff ab spaltenden Mitteln behandelt wird.
Beim Cholestanon-3, in welchem die Ringe<I>A</I> und B in gleicher Weise wie im Dihydrocholesterin, d. h. in der sogenannten trans-Stellung miteinander verknüpft sind, tritt das Halogen vorzugsweise am Kohlen stoffatom 2 ein, so dass bei der nachfolgen den Halogenwasserstoffabspaltung die Dop pelbindung zwischen gohlenstoffatom 1 und 2 zu liegen kommt.
Als Halogenierungsmittel verwendet man vorteilhaft Brom. Um anschliessend den Ha logenwasserstoff abzuspalten erhitzt man das Halogenierungsprodukt zweckmässig mit Sal zen organischer Säuren, wie galiumacetat in Eisessiglösung, mehrere Stunden auf höhere Temperaturen. Natürlich können auch andere bekannte Methoden zur Halogenwasserstoff abspaltung Anwendung finden.
Das A1,2-Cholestenon-3 ist beschrieben in Ber. 68, S. 2091-93 (1935). Es soll zur Um wandlung in andere hormonartige Produkte Verwendung finden.
Beispiel: 1 g Cholestanon-3 (Schmp. 128 bis 129 ) wird in 40 cm' Eisessig gelöst und mit vier Tropfen Bromwasserstoff-Eisessig und 2,4 cm3 einer 1,05 Mol Brom (bezogen auf 1 Mol Cholestanon) enthaltenden Bromeisessig-Lö- sung versetzt. Die Reaktionslösung wird bei Zimmertemperatur nach 10 Minuten entfärbt.
Nach 12stündigem Stehen kristallisiert das 2-Brom-cholestanon in schön ausgebildeten weissen Nadeln direkt aus der Reaktions- lösung.
Nach dem Umkristallisieren aus Chloro- form-Eisessig zeigt es einen Schmelzpunkt von<B>169</B> bis 170 . Ausbeute 1,5 g. 1 g des 2-Brom-cholestanons vom Schmelz- punkt 169 bis<B>1701</B> wird hierauf in 30 cm" 21 % iger Kaliumacetat - Eisessiglösung sus pendiert und 5 Stunden bei 200 im Bom benrohr erhitzt. Das Reaktionsgemisch wird mit Wasser gefällt und in Äther aufgenom men. Die neutralen Anteile werden bei 0,001 mm Rg destilliert.
Bei 100 bis<B>110'</B> sublimiert das erhaltene d",-Cholestenon-(3). Nach Umlösen aus verdünntem Aceton kri stallisiert es in schön gefiederten Blättchen vom Schmp. 111 bis 112'. Ausbeute: 50 mg [a] v <B>=-32,08'</B> (in Alkohol); Absorp tionsmaximum bei 240 m,u.
Die Halogenierung kann nicht nur in Eisessiglösung, sondern auch in andern in differenten organischen Lösungsmitteln, wie Chloroform, Tetrachlorkohlenstoff und dergl., durchgeführt werden, vorausgesetzt, daB diese Lösungsmittel von Halogen nicht we sentlich angegriffen werden.
Eine Trennung und Isolierung des halo- genierten Zwischenproduktes und des unge sättigten Endproduktes kann nicht nur in den im Beispiel angegebenen Weisen durch geführt werden, sondern man kann auch an dere Methoden verwenden, indem man zum Beispiel von der Bildung unlöslicher oder schwerlöslicher Kondensationsprodukte, wie sie zum Beispiel mit typischen Ketonreagen- zien und dergl., erhalten werden, Gebrauch macht.
Process for the preparation of di, 2-cholestenone-3. The present invention relates to a process for the preparation of A ,, 2-cholestenone-3.
This process is characterized in that 3-cholestanone leads to 2-halocholestanone-3 by halogenation and this is treated with agents which split off hydrogen halide.
With cholestanone-3, in which the rings <I> A </I> and B in the same way as in dihydrocholesterol, i. H. are linked to one another in the so-called trans position, the halogen preferably occurs at carbon atom 2, so that the double bond between carbon atoms 1 and 2 comes to lie in the subsequent splitting off of hydrogen halide.
The halogenating agent used is advantageously bromine. In order to then split off the hydrogen halide, the halogenation product is expediently heated with salts of organic acids, such as galium acetate in glacial acetic acid solution, for several hours at higher temperatures. Of course, other known methods for splitting off hydrogen halide can also be used.
The A1,2-cholestenone-3 is described in Ber. 68, pp. 2091-93 (1935). It is said to be used for conversion into other hormone-like products.
Example: 1 g of cholestanone-3 (melting point 128 to 129) is dissolved in 40 cm 'of glacial acetic acid and four drops of hydrogen bromide glacial acetic acid and 2.4 cm3 of a 1.05 mol of bromine (based on 1 mol of cholestanone) containing bromine acetic acid solution - solution shifted. The reaction solution is decolorized after 10 minutes at room temperature.
After standing for 12 hours, the 2-bromo-cholestanone crystallizes in beautifully formed white needles directly from the reaction solution.
After recrystallization from chloroform glacial acetic acid, it has a melting point of 169 to 170. Yield 1.5g. 1 g of the 2-bromo-cholestanone with a melting point of 169 to 1701 is then suspended in 30 cm "21% potassium acetate-glacial acetic acid solution and heated in a bomb tube for 5 hours at 200. The reaction mixture is mixed with Water precipitated and taken up in ether. The neutral components are distilled at 0.001 mm Rg.
At 100 to 110 ', the obtained d ", - cholestenone- (3) sublimes. After dissolving from dilute acetone, it crystallizes in beautifully pinnate leaflets with a melting point of 111 to 112'. Yield: 50 mg [ a] v <B> = -32.08 '</B> (in alcohol); absorption maximum at 240 m, u.
The halogenation can be carried out not only in glacial acetic acid solution, but also in other solvents in different organic solvents, such as chloroform, carbon tetrachloride and the like, provided that these solvents are not significantly attacked by halogen.
A separation and isolation of the halogenated intermediate product and the unsaturated end product can not only be carried out in the ways indicated in the example, but you can also use other methods, for example by the formation of insoluble or sparingly soluble condensation products, such as them for example with typical ketone reagents and the like.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200659X | 1935-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH200659A true CH200659A (en) | 1938-10-31 |
Family
ID=5762189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH200659D CH200659A (en) | 1935-11-05 | 1936-10-30 | Process for the production of 1,2-cholestenone-3. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH200659A (en) |
-
1936
- 1936-10-30 CH CH200659D patent/CH200659A/en unknown
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