SE7903095L - NEW PROCEDURE FOR THE PREPARATION OF 4-SUBSTITUTED 1,2-DIFENYL-3,5-DIOXOPYRAZOLIDINES - Google Patents
NEW PROCEDURE FOR THE PREPARATION OF 4-SUBSTITUTED 1,2-DIFENYL-3,5-DIOXOPYRAZOLIDINESInfo
- Publication number
- SE7903095L SE7903095L SE7903095A SE7903095A SE7903095L SE 7903095 L SE7903095 L SE 7903095L SE 7903095 A SE7903095 A SE 7903095A SE 7903095 A SE7903095 A SE 7903095A SE 7903095 L SE7903095 L SE 7903095L
- Authority
- SE
- Sweden
- Prior art keywords
- group
- general formula
- img
- formula
- compounds
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C243/00—Compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
-
- 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
- C07D231/14—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 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
- C07D231/28—Two oxygen or sulfur atoms
- C07D231/30—Two oxygen or sulfur atoms attached in positions 3 and 5
- C07D231/32—Oxygen atoms
- C07D231/36—Oxygen atoms with hydrocarbon radicals, substituted by hetero atoms, attached in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic 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
- C07D317/14—Heterocyclic 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 substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/30—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
This invention is concerned with a novel process for production of 4-substituted 1,2-diphenyl-3,5-dioxopyrazolidines of general formula <IMG> I where R and R1, which by be identical to or different from each other, represent a hydrogen atom, a lower alkyl group, a phenyl group or the group -COOR" (where R" means hydrogen or a lower alkyl group) and A a hydrogen atom or a hydroxyl group. Compounds of general formula I exist in the so-called Z- and in the isomeric E-form, which fall both under the general formula designated above (as well as mixtures thereof). The compounds of formula I are prepared by either (a) reacting a cyclosemiacetal of general formula <IMG> II where A' represents hydrogen or an etherified hydroxyl group, preferably the .beta.-methoxyethoxymethoxy (=MEM) group, with a triarylphosphorane derivative of general formula <IMG> III where R and R' have the above-mentioned meanings and Ar represents a phenyl group (optionally substituted with an inert group such as methyl, methoxy or phenyl) and, subsequently, optionally liberating the etherified hydroxy group by means of a mild Lewis-acid; or reacting the aldehyde of the formula <IMG> IIa with a compound of formula III as defined above. The compounds of formula I are valuable antiphologistically active compounds. The intermediates of formulae II and IIa are novel and form part of this invention. They are prepared by rearrangement or deketalisation of the corresponding cyclic acetals of general formula <IMG> IV where A' has the meanings indicated above. This rearrangement may be effected, for example, by means of simple heating in aqueous ethanol.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782815302 DE2815302A1 (en) | 1978-04-08 | 1978-04-08 | NEW PROCESS FOR THE PREPARATION OF 4-SUBSTITUTED 1,2-DIPHENYL-3,5-DIOXOPYRAZOLIDINES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7903095L true SE7903095L (en) | 1979-10-09 |
| SE448165B SE448165B (en) | 1987-01-26 |
Family
ID=6036514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7903095A SE448165B (en) | 1978-04-08 | 1979-04-06 | NEW PROCEDURE FOR PREPARATION OF 4-SUBSTITUTED 1,2-DIPHENYL-3,5-DIOXOPYRAZOLIDINES |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS54141770A (en) |
| AR (1) | AR220377A1 (en) |
| AT (1) | AT370726B (en) |
| CA (1) | CA1134834A (en) |
| CH (1) | CH639074A5 (en) |
| DE (1) | DE2815302A1 (en) |
| DK (1) | DK143279A (en) |
| ES (1) | ES479422A1 (en) |
| FI (1) | FI70707C (en) |
| FR (1) | FR2421886A1 (en) |
| GR (1) | GR66638B (en) |
| IN (1) | IN150827B (en) |
| IT (1) | IT1193754B (en) |
| NL (1) | NL7902731A (en) |
| NO (1) | NO152006C (en) |
| PL (1) | PL117473B1 (en) |
| PT (1) | PT69449A (en) |
| SE (1) | SE448165B (en) |
| YU (1) | YU41152B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02166236A (en) * | 1988-12-19 | 1990-06-26 | Kawasaki Steel Corp | Floater having side plate |
| JPH0331465A (en) * | 1989-06-27 | 1991-02-12 | Kawasaki Steel Corp | Method for correcting meandering in floater |
-
1978
- 1978-04-08 DE DE19782815302 patent/DE2815302A1/en not_active Withdrawn
-
1979
- 1979-03-26 IN IN198/DEL/79A patent/IN150827B/en unknown
- 1979-03-28 GR GR58712A patent/GR66638B/el unknown
- 1979-03-30 AT AT0236979A patent/AT370726B/en not_active IP Right Cessation
- 1979-04-02 AR AR276032A patent/AR220377A1/en active
- 1979-04-04 CH CH313779A patent/CH639074A5/en not_active IP Right Cessation
- 1979-04-05 YU YU815/79A patent/YU41152B/en unknown
- 1979-04-06 SE SE7903095A patent/SE448165B/en not_active IP Right Cessation
- 1979-04-06 CA CA000325093A patent/CA1134834A/en not_active Expired
- 1979-04-06 PL PL1979214738A patent/PL117473B1/en unknown
- 1979-04-06 DK DK143279A patent/DK143279A/en not_active IP Right Cessation
- 1979-04-06 FI FI791139A patent/FI70707C/en not_active IP Right Cessation
- 1979-04-06 NL NL7902731A patent/NL7902731A/en unknown
- 1979-04-06 NO NO791161A patent/NO152006C/en unknown
- 1979-04-06 JP JP4188579A patent/JPS54141770A/en active Granted
- 1979-04-06 FR FR7908855A patent/FR2421886A1/en active Granted
- 1979-04-06 IT IT48654/79A patent/IT1193754B/en active
- 1979-04-06 PT PT69449A patent/PT69449A/en unknown
- 1979-04-07 ES ES479422A patent/ES479422A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| YU41152B (en) | 1986-12-31 |
| AT370726B (en) | 1983-04-25 |
| SE448165B (en) | 1987-01-26 |
| AR220377A1 (en) | 1980-10-31 |
| FI70707B (en) | 1986-06-26 |
| DE2815302A1 (en) | 1979-10-18 |
| CH639074A5 (en) | 1983-10-31 |
| PL117473B1 (en) | 1981-08-31 |
| PT69449A (en) | 1979-05-01 |
| JPS6213951B2 (en) | 1987-03-30 |
| PL214738A1 (en) | 1980-06-16 |
| ATA236979A (en) | 1982-09-15 |
| NO791161L (en) | 1979-10-09 |
| YU81579A (en) | 1983-06-30 |
| FR2421886B1 (en) | 1983-09-09 |
| CA1134834A (en) | 1982-11-02 |
| NL7902731A (en) | 1979-10-10 |
| DK143279A (en) | 1979-10-09 |
| FR2421886A1 (en) | 1979-11-02 |
| FI791139A (en) | 1979-10-09 |
| IT1193754B (en) | 1988-08-24 |
| NO152006B (en) | 1985-04-09 |
| IN150827B (en) | 1982-12-25 |
| FI70707C (en) | 1986-10-06 |
| IT7948654A0 (en) | 1979-04-06 |
| ES479422A1 (en) | 1980-02-01 |
| JPS54141770A (en) | 1979-11-05 |
| NO152006C (en) | 1985-07-17 |
| GR66638B (en) | 1981-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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