GB1537859A - 3,5-disubstituted pyrazoles - Google Patents
3,5-disubstituted pyrazolesInfo
- Publication number
- GB1537859A GB1537859A GB5650/76A GB565076A GB1537859A GB 1537859 A GB1537859 A GB 1537859A GB 5650/76 A GB5650/76 A GB 5650/76A GB 565076 A GB565076 A GB 565076A GB 1537859 A GB1537859 A GB 1537859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disubstituted
- diphenyl
- reaction mixture
- pyrazolines
- substances
- 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
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
3,5-Diphenylpyrazole, 3,5-diphenyl-4-alkylpyrazoles or 3,5-diphenyl-4-alkoxypyrazoles are prepared from the corresponding pyrazolines by catalytic dehydrogenation in an inert organic solvent. Platinum or palladium, both of which can also be supported by various substances, can be used as catalysts. The pyrazolines used as starting material can be obtained by reacting a methyl ketone, such as acetophenone or its derivatives, with a suitable aldehyde, such as benzaldehyde, in the presence of a base, to give a 1,3-disubstituted alpha , beta -unsaturated ketone, such as chalcone or its substitution products, acidification of the resulting reaction mixture and treatment of the acidified reaction mixture with hydrazine. The compounds prepared according to the invention can be used as starting substances for the preparation of corresponding 3,5-disubstituted 1,2-dialkylpyrazolium salts, such as 1,2-dimethyl-3,5-diphenylpyrazolium methyl sulphate which, in turn, can be used as herbicides.
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 (1)
| Publication Number | Publication Date |
|---|---|
| GB1537859A true GB1537859A (en) | 1979-01-04 |
Family
ID=24192112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5650/76A Expired GB1537859A (en) | 1975-02-12 | 1976-02-12 | 3,5-disubstituted pyrazoles |
Country Status (19)
| Country | Link |
|---|---|
| JP (2) | JPS51101979A (en) |
| AT (1) | AT350549B (en) |
| BE (1) | BE838408R (en) |
| BR (1) | BR7600847A (en) |
| CA (1) | CA1060455A (en) |
| CH (1) | CH608004A5 (en) |
| CS (1) | CS192554B2 (en) |
| DD (1) | DD124249A6 (en) |
| DE (1) | DE2602965A1 (en) |
| DK (1) | DK55276A (en) |
| ES (1) | ES445094A2 (en) |
| FR (1) | FR2300763A2 (en) |
| GB (1) | GB1537859A (en) |
| IL (1) | IL48724A (en) |
| IT (1) | IT1053296B (en) |
| NL (1) | NL178075C (en) |
| SE (1) | SE7601544L (en) |
| SU (1) | SU799657A3 (en) |
| ZA (1) | ZA757986B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3029160A1 (en) * | 1980-08-01 | 1982-03-04 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING PYRAZOLES |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855148A (en) * | 1981-09-29 | 1983-04-01 | Hino Motors Ltd | Production of die for molding |
-
1975
- 1975-12-22 CA CA242,256A patent/CA1060455A/en not_active Expired
- 1975-12-23 ZA ZA00757986A patent/ZA757986B/en unknown
- 1975-12-24 IL IL48724A patent/IL48724A/en unknown
-
1976
- 1976-01-09 IT IT47573/76A patent/IT1053296B/en active
- 1976-01-16 NL NLAANVRAGE7600445,A patent/NL178075C/en not_active IP Right Cessation
- 1976-01-27 DE DE19762602965 patent/DE2602965A1/en active Granted
- 1976-02-03 DD DD191069A patent/DD124249A6/xx unknown
- 1976-02-10 FR FR7603642A patent/FR2300763A2/en active Granted
- 1976-02-10 BE BE164196A patent/BE838408R/en not_active IP Right Cessation
- 1976-02-10 JP JP51012890A patent/JPS51101979A/ja active Pending
- 1976-02-11 SU SU762319859A patent/SU799657A3/en active
- 1976-02-11 AT AT96276A patent/AT350549B/en not_active IP Right Cessation
- 1976-02-11 BR BR7600847A patent/BR7600847A/en unknown
- 1976-02-11 CS CS76899A patent/CS192554B2/en unknown
- 1976-02-11 SE SE7601544A patent/SE7601544L/en unknown
- 1976-02-11 CH CH166976A patent/CH608004A5/en not_active IP Right Cessation
- 1976-02-11 DK DK55276*#A patent/DK55276A/en unknown
- 1976-02-12 GB GB5650/76A patent/GB1537859A/en not_active Expired
- 1976-02-12 ES ES445094A patent/ES445094A2/en not_active Expired
-
1985
- 1985-02-27 JP JP60036705A patent/JPS60222463A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IL48724A (en) | 1979-07-25 |
| FR2300763A2 (en) | 1976-09-10 |
| DD124249A6 (en) | 1977-02-09 |
| CH608004A5 (en) | 1978-12-15 |
| IT1053296B (en) | 1981-08-31 |
| AT350549B (en) | 1979-06-11 |
| CA1060455A (en) | 1979-08-14 |
| AU8790475A (en) | 1977-06-30 |
| FR2300763B2 (en) | 1982-09-03 |
| ATA96276A (en) | 1978-11-15 |
| IL48724A0 (en) | 1976-02-29 |
| NL178075C (en) | 1986-01-16 |
| NL7600445A (en) | 1976-08-16 |
| BR7600847A (en) | 1976-09-14 |
| DE2602965A1 (en) | 1976-08-26 |
| CS192554B2 (en) | 1979-08-31 |
| BE838408R (en) | 1976-08-10 |
| ES445094A2 (en) | 1977-06-16 |
| ZA757986B (en) | 1976-12-29 |
| JPS6227068B2 (en) | 1987-06-12 |
| DK55276A (en) | 1976-08-13 |
| NL178075B (en) | 1985-08-16 |
| DE2602965C2 (en) | 1988-11-17 |
| SE7601544L (en) | 1976-08-13 |
| JPS51101979A (en) | 1976-09-08 |
| JPS60222463A (en) | 1985-11-07 |
| SU799657A3 (en) | 1981-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Miura et al. | A Reaction of Triazoles with Thioesters to Produce β‐Sulfanyl Enamides by Insertion of an Enamine Moiety into the Sulfur–Carbonyl Bond | |
| Yoo et al. | Efficient Synthesis of α‐Trifluoromethyl Carboxylic Acids and Esters through Fluorocarboxylation of gem‐Difluoroalkenes | |
| Panke et al. | A practical approach of continuous processing to high energetic nitration reactions in microreactors | |
| Ran et al. | Asymmetric allylic alkylation with deconjugated carbonyl compounds: direct vinylogous umpolung strategy | |
| Wu et al. | An efficient one-pot synthesis of 3, 5-disubstituted 1H-pyrazoles | |
| Nakamura et al. | Skeletal Rearrangement of O‐Propargylic Formaldoximes by a Gold‐Catalyzed Cyclization/Intermolecular Methylene Transfer Sequence | |
| Landge et al. | Synthesis of pyrazoles by a one-pot tandem cyclization-dehydrogenation approach on Pd/C/K-10 catalyst | |
| Wąsińska et al. | Improved protocol for mononitration of phenols with bismuth (III) and iron (III) nitrates | |
| Patil et al. | An eco-friendly innovative halide and metal-free basic ionic liquid catalyzed synthesis of tetrahydrobenzo [b] pyran derivatives in aqueous media: A sustainable protocol | |
| Nagy et al. | N‐Hydroxyphthalimide Catalyzed Aerobic Oxidation of Aldehydes under Continuous Flow Conditions | |
| Aloia et al. | Direct Synthesis of 3‐Aryl Substituted Isocoumarins and Phthalides through Palladium Acetate Catalyzed C (sp2)− H Activation in Ionic Liquids | |
| GB1537859A (en) | 3,5-disubstituted pyrazoles | |
| Shukla et al. | PdII‐Catalyzed Cascade Synthesis of Chromane Derivatives Initiated by cis‐Chloropalladation or trans‐Acetoxypalladation | |
| Knight et al. | 4-Phosphoranylidenebutenolide intermediates in the synthesis of 4-ylidenebutenolides and 4-ylidenetetronic acids. Synthesis of alkylidenephthalide constituents of celery odour and models for freelingyne | |
| Fujiwara et al. | Biological Evaluation of Isosteric Applicability of 1, 3‐Substituted Cuneanes as m‐Substituted Benzenes Enabled by Selective Isomerization of 1, 4‐Substituted Cubanes | |
| Lee et al. | Facile synthesis of 3-alkylidene-3H-isobenzofuranones from the Baylis-Hillman reaction of 2-carboxybenzaldehyde | |
| Ding et al. | One-pot synthesis of α, β-unsaturated esters, ketones, and nitriles from alcohols and phosphonium salts | |
| Fétizon et al. | Highly selective oxidations of diols by silver carbonate | |
| Wang et al. | N-hydroxysuccinimide-promoted oxidation of primary alcohols and aldehydes to form active esters with hypervalent (III) iodine | |
| Visse et al. | Asymmetric Allylic Alkylation of Alkanoic‐Acid Ester Enolates | |
| US4097535A (en) | Preparation of aldehydes from alcohols | |
| KR920000692A (en) | How to prepare ibuprofen | |
| Kobayashi et al. | TEMPERATURE-DEPENDENCY OF DIASTEREOSELECTIVITY IN THE ALDOL REACTION OF TRIBUTYLSTANNYL ENOLATES WITH BENZALDEHYDE | |
| Poor Heravi et al. | Efficient Knoevenagel condensation reactions catalyzed by activated gel zirconium (IV) oxide | |
| Kotova et al. | Selective hydrogenation of C6 dienic compounds using homogeneous Cp*-ruthenium (II) catalyst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 704A | Declaration that licence is not available as of right for an excepted use (par. 4a/1977) |