WO2000058299A1 - Verfahren zur herstellung von benzofurandionoxim-derivaten - Google Patents
Verfahren zur herstellung von benzofurandionoxim-derivaten Download PDFInfo
- Publication number
- WO2000058299A1 WO2000058299A1 PCT/EP2000/002283 EP0002283W WO0058299A1 WO 2000058299 A1 WO2000058299 A1 WO 2000058299A1 EP 0002283 W EP0002283 W EP 0002283W WO 0058299 A1 WO0058299 A1 WO 0058299A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- compounds
- substituted
- unsubstituted alkyl
- acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans 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 carbon atoms of the hetero ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans 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 carbon atoms of the hetero ring
- C07D307/83—Oxygen atoms
Definitions
- the present invention relates to a new process for the preparation of benzofurandione oxime derivatives.
- R 1 represents substituted or unsubstituted alkyl
- R 3 represents hydrogen, substituted or unsubstituted alkyl, alkoxy, haloalkoxy or halogen
- R 1 and R 3 have the meaning given above, and
- R 2 represents hydrogen, or substituted or unsubstituted alkyl
- dialkylsilyl chloride in the presence of dialkyl sulfoxide, optionally in a diluent and / or a solvent.
- Acids in the sense of the invention are more highly concentrated acids, in particular mineral acids.
- Preferred mineral acids are sulfuric acid, preferably 10 to 90% sulfuric acid, in particular semi-concentrated commercially available sulfuric acid, and / or phosphoric acid, preferably 20 to 95% phosphoric acid, in particular commercially available 85% phosphoric acid.
- Diluents and / or solvents by way of example and preferably water; Alcohols, especially methanol; Ether. especially dimethoxyethane, Tetrahydrofuran, methyl tert-butyl ether or tert-amyl methyl ether; Alkyl nitriles, especially acetonitrile; Ketones, in particular acetone or solvent mixtures thereof, in particular alcohol-water mixtures, are used.
- ethers in particular dimethoxyethane, tetrahydrofuran, methyl tert-butyl ether or tert-amyl methyl ether, are used as diluents and / or solvents; Alkyl nitriles, especially acetonitrile; N-methyl pyrrolidone; Alkane carboxylic acid esters, especially ethyl acetate; Ketones, especially acetone or solvent mixtures thereof are used.
- reaction of compounds of formula (II) with acids takes place in a temperature range from 0 ° C to 100 ° C, preferably in a temperature range from 20 ° C to 80 ° C.
- reaction of compounds of formula (II) with trialkylsilyl chloride in the presence of dialkyl sulfoxide takes place in a temperature range from 0 ° C. to the reflux temperature of the particular mixture, preferably at the reflux temperature.
- reaction of compounds of formula (II) is carried out under normal pressure, under elevated or under reduced pressure, preferably under normal pressure.
- the compounds of formula (II) are used as E / Z isomer mixtures or as pure isomers.
- the compounds of the formula (I) obtainable by the process according to the invention are then obtained in the form of the isomer mixtures or in the form of the pure isomers.
- the isomer mixtures obtained can optionally by customary methods, for. B. separated by chromatography into the pure isomers.
- the starting materials are defined by formula (II) above.
- the saturated or unsaturated hydrocarbon chains are each straight-chain or branched.
- alkyl represents C 1 -C 4 -alkyl, in particular methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, t-butyl or i-butyl.
- alkoxy is C r C 4 alkyl, in particular methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, s-butoxy, t-butoxy or i-butoxy.
- Alkyloxycarbonyl or halogen preferred.
- Halogen generally represents fluorine, chlorine, bromine or iodine, preferably fluorine, chlorine or bromine, in particular fluorine or chlorine.
- R ' is preferably methyl.
- R 2 is preferably hydrogen or 2-hydroxyethyl, in particular hydrogen.
- R 3 is preferably hydrogen.
- A-19706399, DE-A-19706396 and EP-A-0 846 691 The compounds of formula (II) which are not yet known can be prepared by the processes described in DE-A-19706399, DE-A-19706396 and / or EP-A-0 846 691.
- a decisive advantage of the method according to the invention is the increased yield compared to the known methods.
- Another advantage of the process according to the invention is that the use of mixtures of isomers results in the majority of the E isomers. It is also extremely surprising to the person skilled in the art that the reaction of compounds of the formula (II) can be carried out in an acidic medium.
- the process is used for the production of important intermediates of formula (I) which facilitate the production of known pesticides.
- the reaction mixture is stirred at 55 ° C. for one hour and under reflux for one hour until the evolution of gas has ended.
- the mixture is then cooled to 20 ° C., the suspension is suctioned off and washed with acetonitrile.
- the orange filtrate is added dropwise to 18 l of ice water and 2 l of petroleum ether within 30 minutes.
- the suspension is stirred for 30 minutes at 20 ° C, the product settles in the upper petroleum ether phase.
- the lower aqueous phase is drained off and the product is suctioned off in the PE phase and washed with 1.5 l of petroleum ether, 4.0 l of water and 1.0 l of petroleum ether and dried in vacuo at 40.degree.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00914135A EP1165539A1 (de) | 1999-03-27 | 2000-03-15 | Verfahren zur herstellung von benzofurandionoxim-derivaten |
JP2000608002A JP2002540202A (ja) | 1999-03-27 | 2000-03-15 | ベンゾフランジオンオキシム誘導体の製造方法。 |
AU35560/00A AU3556000A (en) | 1999-03-27 | 2000-03-15 | Method of preparing benzofurandione oxime derivatives |
US09/937,420 US6462205B1 (en) | 1999-03-27 | 2001-09-26 | Method of preparing benzofurandione oxime derivatives |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914142A DE19914142A1 (de) | 1999-03-27 | 1999-03-27 | Verfahren zur Herstellung von Benzofurandionoxim-Derivaten |
DE19914142.8 | 1999-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000058299A1 true WO2000058299A1 (de) | 2000-10-05 |
Family
ID=7902776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/002283 WO2000058299A1 (de) | 1999-03-27 | 2000-03-15 | Verfahren zur herstellung von benzofurandionoxim-derivaten |
Country Status (7)
Country | Link |
---|---|
US (1) | US6462205B1 (de) |
EP (1) | EP1165539A1 (de) |
JP (1) | JP2002540202A (de) |
AU (1) | AU3556000A (de) |
DE (1) | DE19914142A1 (de) |
TW (1) | TW544450B (de) |
WO (1) | WO2000058299A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993007116A1 (en) * | 1991-09-30 | 1993-04-15 | Zeneca Limited | Fungicides |
WO1995004728A1 (de) * | 1993-08-11 | 1995-02-16 | Bayer Aktiengesellschaft | Substituierte azadioxacycloalkene und ihre verwendung als fungizide |
WO1995024396A1 (en) * | 1994-03-07 | 1995-09-14 | Zeneca Limited | Pyrimidine fungicides |
EP0846691A1 (de) * | 1996-12-09 | 1998-06-10 | Bayer Ag | Verfahren zur Herstellung von 3-(1-Hydroxyphenyl-1-alkoximinomethyl)dioxazinen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW492962B (en) | 1996-05-30 | 2002-07-01 | Bayer Ag | Process for preparing 3-(1-hydroxyphenyl-1-alkoximinomethyl)dioxazines |
-
1999
- 1999-03-27 DE DE19914142A patent/DE19914142A1/de not_active Withdrawn
-
2000
- 2000-03-15 JP JP2000608002A patent/JP2002540202A/ja active Pending
- 2000-03-15 WO PCT/EP2000/002283 patent/WO2000058299A1/de not_active Application Discontinuation
- 2000-03-15 AU AU35560/00A patent/AU3556000A/en not_active Abandoned
- 2000-03-15 EP EP00914135A patent/EP1165539A1/de not_active Withdrawn
- 2000-03-15 TW TW089104677A patent/TW544450B/zh active
-
2001
- 2001-09-26 US US09/937,420 patent/US6462205B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993007116A1 (en) * | 1991-09-30 | 1993-04-15 | Zeneca Limited | Fungicides |
WO1995004728A1 (de) * | 1993-08-11 | 1995-02-16 | Bayer Aktiengesellschaft | Substituierte azadioxacycloalkene und ihre verwendung als fungizide |
WO1995024396A1 (en) * | 1994-03-07 | 1995-09-14 | Zeneca Limited | Pyrimidine fungicides |
EP0846691A1 (de) * | 1996-12-09 | 1998-06-10 | Bayer Ag | Verfahren zur Herstellung von 3-(1-Hydroxyphenyl-1-alkoximinomethyl)dioxazinen |
Non-Patent Citations (2)
Title |
---|
LOTH H ET AL: "EINE NEUE SYNTHESE VON 2-ACYLOXYIMINO-CUMARANONEN", ARCHIV DER PHARMAZIE,DE,VCH VERLAGSGESELLSCHAFT MBH, WEINHEIM, vol. 306, no. 2, 1 February 1973 (1973-02-01), pages 122 - 126, XP002039748, ISSN: 0365-6233 * |
VENKATESWARA RAO K ET AL: "REACTIVITY OF 2-HYDROXY-OMEGA-NITROACETOPHENONES: SYNTHESIS OF 2-OXIMINOCOUMARANONES", PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES. SECTION A PHYSICAL SCIENCES,IN,BANGALORE, vol. 83A, no. 6, 1976, pages 238 - 242, XP002059228, ISSN: 0370-0089 * |
Also Published As
Publication number | Publication date |
---|---|
AU3556000A (en) | 2000-10-16 |
US6462205B1 (en) | 2002-10-08 |
EP1165539A1 (de) | 2002-01-02 |
TW544450B (en) | 2003-08-01 |
JP2002540202A (ja) | 2002-11-26 |
DE19914142A1 (de) | 2000-09-28 |
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