DE2602965A1 - Verfahren zur herstellung von 3,5- diphenylpyrazolen - Google Patents
Verfahren zur herstellung von 3,5- diphenylpyrazolenInfo
- Publication number
- DE2602965A1 DE2602965A1 DE19762602965 DE2602965A DE2602965A1 DE 2602965 A1 DE2602965 A1 DE 2602965A1 DE 19762602965 DE19762602965 DE 19762602965 DE 2602965 A DE2602965 A DE 2602965A DE 2602965 A1 DE2602965 A1 DE 2602965A1
- Authority
- DE
- Germany
- Prior art keywords
- palladium
- diphenyl
- diphenylpyrazole
- catalyst
- parts
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/06—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/12—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Z'
(2 Teile) zu und erhitzt das Reaktionsgemisch. Nach Abdestillieren von Methanol und Wasser aus dem Reaktionsgemisch erhöht man die Temperatur auf 200 0C und beläßt den Ansatz 24 Stunden bei dieser Temperatur. Anschließend wird das Reaktionsgemisch auf 50 0C abgekühlt und filtriert, wodurch
man im katalysatorhaltigen Filterkuchen 3,5-Diphenylpyrazol in 79,5-prozentiger Ausbeute erhält, das bei 194 bis 199 0C schmilzt.
200 0C hält. Hierbei erhält man 3,5-Diphenylpyrazol in
70,4-prozentiger Ausbeute.
wobei man das Reaktionsgemisch jedoch nicht mit Nitrobenzol versetzt und nur 0,1 Teile des Katalysators aus 5 % Palladiumauf-Kohle verwendet. Nach 6,25 Stunden langer Umsetzung bei einer Temperatur von 200 C erhält man 3,5-Diphenylpyrazol in 78,7-prozentiger Ausbeute.
Claims (3)
- — Q —.PatentansprücheVerfahren zur Herstellung von 3,5-Diphenylpyrazol, 3,5-Diphenyl-4-alkylpyrazol oder 3,S-Diphenyl-4-alkoxypyrazol, dadurch gekennzeichnet, daß man das entsprechende 3,5-Dxphenylpyrazolin, 3,5-Diphenyl-4-alkylpyrazolin oder 3,5-Diphenyl-4-alkoxypyrazolin in einem inerten organischen Lösungsmittel mit Platin, Palladium, Platinauf-Aluminiumoxid, Platin-auf-Bariumsulfat, Palladium-auf-Aluminiumoxid, Palladium-auf-Bariumsulfat, Platin-auf-Siliciumdioxid oder Palladium-auf-Siliciumdioxid als Katalysator behandelt.
- 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet , daß man die Umsetzung bei Rückfluß temoeratür durchführt.
- 3. Verfahren nach Anspruch 1 und 2, dadurchgekennzeichnet , daß man als Lösungsmittel einen niederen Alkohol oder Athylendichlorid verwendet.809835/1000
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/549,219 US3952010A (en) | 1973-09-17 | 1975-02-12 | Catalytic dehydrogenation process for the preparation of 3,5-disubstituted pyrazoles |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2602965A1 true DE2602965A1 (de) | 1976-08-26 |
DE2602965C2 DE2602965C2 (de) | 1988-11-17 |
Family
ID=24192112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762602965 Granted DE2602965A1 (de) | 1975-02-12 | 1976-01-27 | Verfahren zur herstellung von 3,5- diphenylpyrazolen |
Country Status (19)
Country | Link |
---|---|
JP (2) | JPS51101979A (de) |
AT (1) | AT350549B (de) |
BE (1) | BE838408R (de) |
BR (1) | BR7600847A (de) |
CA (1) | CA1060455A (de) |
CH (1) | CH608004A5 (de) |
CS (1) | CS192554B2 (de) |
DD (1) | DD124249A6 (de) |
DE (1) | DE2602965A1 (de) |
DK (1) | DK55276A (de) |
ES (1) | ES445094A2 (de) |
FR (1) | FR2300763A2 (de) |
GB (1) | GB1537859A (de) |
IL (1) | IL48724A (de) |
IT (1) | IT1053296B (de) |
NL (1) | NL178075C (de) |
SE (1) | SE7601544L (de) |
SU (1) | SU799657A3 (de) |
ZA (1) | ZA757986B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045394A2 (de) * | 1980-08-01 | 1982-02-10 | BASF Aktiengesellschaft | Verfahren zur Herstellung von Pyrazol |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5855148A (ja) * | 1981-09-29 | 1983-04-01 | Hino Motors Ltd | 成形用金型の製造方法 |
-
1975
- 1975-12-22 CA CA242,256A patent/CA1060455A/en not_active Expired
- 1975-12-23 ZA ZA00757986A patent/ZA757986B/xx unknown
- 1975-12-24 IL IL48724A patent/IL48724A/xx unknown
-
1976
- 1976-01-09 IT IT47573/76A patent/IT1053296B/it active
- 1976-01-16 NL NLAANVRAGE7600445,A patent/NL178075C/xx not_active IP Right Cessation
- 1976-01-27 DE DE19762602965 patent/DE2602965A1/de active Granted
- 1976-02-03 DD DD191069A patent/DD124249A6/xx unknown
- 1976-02-10 JP JP51012890A patent/JPS51101979A/ja active Pending
- 1976-02-10 BE BE164196A patent/BE838408R/xx not_active IP Right Cessation
- 1976-02-10 FR FR7603642A patent/FR2300763A2/fr active Granted
- 1976-02-11 BR BR7600847A patent/BR7600847A/pt unknown
- 1976-02-11 CS CS76899A patent/CS192554B2/cs unknown
- 1976-02-11 SE SE7601544A patent/SE7601544L/xx unknown
- 1976-02-11 SU SU762319859A patent/SU799657A3/ru active
- 1976-02-11 DK DK55276*#A patent/DK55276A/da unknown
- 1976-02-11 CH CH166976A patent/CH608004A5/xx not_active IP Right Cessation
- 1976-02-11 AT AT96276A patent/AT350549B/de not_active IP Right Cessation
- 1976-02-12 ES ES445094A patent/ES445094A2/es not_active Expired
- 1976-02-12 GB GB5650/76A patent/GB1537859A/en not_active Expired
-
1985
- 1985-02-27 JP JP60036705A patent/JPS60222463A/ja active Granted
Non-Patent Citations (8)
Title |
---|
Chem. Zentralbl., 1916, S.1063 * |
ELDERFIELD, R.C.: Heterocyclic, Compounds, Vol. 5, New York, London, 1957, S.110 * |
HOUBEN-WEYL: Allg. Chem. Methoden, Georg Thieme, Stuttgart, 1955, T. 2, S.338, 341 * |
J. Americ. Chem. Soc., 66, 1944, S.488 * |
J. Prakt. Chem., 126, 1930, S.171-173 * |
RYLANDER, P.N.: Organic Sytheses with Noble Metal Catalysts, Academic Press, New York und London, 1973, S.7 und 9 * |
WEYGAND/HILGETAG: Org. Chem. Experimentierkunst, J.A. Barth, Leipzig, 1970, S.858 u. 859 * |
WILEY, R.H.: The Chemistry of Heterocyclic Compounds, Bd. Pyrazoles..., Interscience Pub., New York-London-Sydney, 1967, S.45 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0045394A2 (de) * | 1980-08-01 | 1982-02-10 | BASF Aktiengesellschaft | Verfahren zur Herstellung von Pyrazol |
EP0045394A3 (en) * | 1980-08-01 | 1982-09-08 | Basf Aktiengesellschaft | Process for preparing pyrazoles |
Also Published As
Publication number | Publication date |
---|---|
IL48724A0 (en) | 1976-02-29 |
IL48724A (en) | 1979-07-25 |
CA1060455A (en) | 1979-08-14 |
DD124249A6 (de) | 1977-02-09 |
JPS51101979A (de) | 1976-09-08 |
IT1053296B (it) | 1981-08-31 |
SU799657A3 (ru) | 1981-01-23 |
AT350549B (de) | 1979-06-11 |
NL178075C (nl) | 1986-01-16 |
FR2300763B2 (de) | 1982-09-03 |
DE2602965C2 (de) | 1988-11-17 |
FR2300763A2 (fr) | 1976-09-10 |
SE7601544L (sv) | 1976-08-13 |
GB1537859A (en) | 1979-01-04 |
CH608004A5 (en) | 1978-12-15 |
JPS6227068B2 (de) | 1987-06-12 |
ZA757986B (en) | 1976-12-29 |
ES445094A2 (es) | 1977-06-16 |
DK55276A (da) | 1976-08-13 |
NL7600445A (nl) | 1976-08-16 |
BR7600847A (pt) | 1976-09-14 |
NL178075B (nl) | 1985-08-16 |
JPS60222463A (ja) | 1985-11-07 |
AU8790475A (en) | 1977-06-30 |
CS192554B2 (en) | 1979-08-31 |
ATA96276A (de) | 1978-11-15 |
BE838408R (fr) | 1976-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8128 | New person/name/address of the agent |
Representative=s name: SPOTT, G., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 800 |
|
AF | Is addition to no. |
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D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8340 | Patent of addition ceased/non-payment of fee of main patent |