WO2000064905A2 - Procede d'alpha-metallation d'un derive heterocyclique, monocyclique ou polycyclique et possedant au moins un heterocycle a 5 atomes, insature ou aromatique - Google Patents
Procede d'alpha-metallation d'un derive heterocyclique, monocyclique ou polycyclique et possedant au moins un heterocycle a 5 atomes, insature ou aromatique Download PDFInfo
- Publication number
- WO2000064905A2 WO2000064905A2 PCT/FR2000/001072 FR0001072W WO0064905A2 WO 2000064905 A2 WO2000064905 A2 WO 2000064905A2 FR 0001072 W FR0001072 W FR 0001072W WO 0064905 A2 WO0064905 A2 WO 0064905A2
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- radical
- unsaturated
- derivative
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- 0 *C1C(*)***1 Chemical compound *C1C(*)***1 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/22—Radicals substituted by doubly bound hetero atoms, or by two hetero atoms other than halogen singly bound to the same carbon atom
-
- 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
- C07D307/84—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
- C07D307/85—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom 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
- C07D333/38—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D333/40—Thiophene-2-carboxylic acid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F1/00—Compounds containing elements of Groups 1 or 11 of the Periodic Table
- C07F1/04—Sodium compounds
Definitions
- the present invention relates to a process for ⁇ -metallation of a heterocyclic, monocyclic or polycyclic derivative and having at least one heterocycle with 5 atoms, unsaturated or aromatic.
- the present invention relates to an addition of electrophyry at the level of heterocyclic systems having at least one 5-atom ring.
- This mechanism requires, in a first step, the departure of a leaving group, commonly a proton, prior to the addition of the electrophobic group carried out in a consecutive step.
- ⁇ -metallation is intended to denote the generation of a carbanion in the ⁇ position of a heteroatom.
- the objective of the present invention is to propose a new pathway for ⁇ -metallation of heterocyclic derivatives.
- the first object of the present invention is a process for ⁇ -metallation of a heterocyclic, monocyclic or polycyclic derivative and having at least one heterocycle with 5 atoms, unsaturated or aromatic, characterized in that one makes reacting said derivative with an effective amount of at least one alkali metal in the presence of a compound of formula (I): RCI (I) in which R represents a hydrocarbon radical having from 1 to 20 carbon atoms which may be a saturated or unsaturated, linear or branched C 10 -C 10 acyclic aliphatic radical; a saturated, unsaturated, monocyclic or polycyclic C 3 -C 18 cycloaliphatic radical; a saturated or unsaturated, linear or branched aliphatic radical carrying a C 4 to C 20 cyclic substituent.
- RCI (I) in which R represents a hydrocarbon radical having from 1 to 20 carbon atoms which may be a saturated or unsaturated, linear or branched C 10 -C 10 acyclic
- the 5-atom heterocycle present in said derivative can be unsaturated or aromatic.
- aromatic means the classic notion of aromaticity as defined in the literature, in particular by Jerry MARCH, Advanced Organic Chemistry, 4th edition, John Wiley and Sons, 1992, pp. 40 and following.
- heteroatom (s) present in the 5-atom heterocycle they can be chosen from oxygen, sulfur and nitrogen, the latter being in a substituted or unsubstituted form.
- the number of heteroatoms present in the cycle can vary from 1 to 4. Of course, at least one of the positions in ⁇ of or one of the heteroatoms must be free.
- the number of heteroatoms varies between 1 and 3.
- the heteroatoms are preferably chosen from oxygen and sulfur.
- heterocyclic derivative to be ⁇ -metallized can be monocyclic or polycyclic.
- a monocyclic derivative In the case of a monocyclic derivative, it can be unsaturated or aromatic and contain at the level of its 5-atom ring 1 to 4 heteroatoms chosen from nitrogen, sulfur and oxygen atoms: the carbon atoms of l 'heterocycle may optionally be substituted provided that at least one of the two carbons present in the alpha position of a heteroatom remains unsubstituted.
- the so-called polycyclic heterocyclic derivatives they comprise at least one heterocycle as defined above.
- This type of polycyclic derivative can consist of: at least 2 heterocycles, aromatic or not, containing at least one heteroatom in each cycle and forming between them ortho- or ortho- and peri-condensed systems or at least one hydrocarbon ring, aromatic or not, and at least one heterocycle, aromatic or not, forming between them ortho- or ortho- and peri-condensed systems, with the carbon atoms of said rings possibly being substituted.
- this substituent is a linear alkyl group or branched C -C 10 cycloalkyl, C 3 -C 10 aryl, C 6 -C 12 alkylaryl or C 7 to C 15 such as benzyl. More preferably, it is a C 4 to C 4 alkyl group and more preferably a methyl group.
- the carbon atoms present at the level of the heterocyclic mono- or polycyclic derivative can be substituted.
- the heterocyclic derivative is substituted by one or more electron donor groups.
- the electron-donor nature of the substituents present on the heterocyclic derivative is assessed in the context of the present invention according to the electronegativity scale established by Jerry March “Advanced Organic Chemistry", 4th edition, John Wiley and Sons, 1992, pp. 14 and following.
- the electronegative character of a radical is evaluated with regard to that of the hydrogen atom whose value is 2.176.
- alkyl group linear or branched, having from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl and tert-butyl,
- a linear or branched alkenyl group having from 2 to 6 carbon atoms, preferably from 2 to 4 carbon atoms, such as vinyl and allyl,
- a C 3 to C 8 cycloalkyl radical such as cyclohexyl
- a C 6 to C 12 aryl radical such as phenyl
- a C 7 to C 15 alkylaryl radical such as benzyl
- alkenyloxy group preferably an allyloxy group
- R., 2 a substituted amino group -N- (R.,) 2 in which the groups R, identical or different, represent a hydrogen atom or a linear or branched C 10 -C 10 alkyl group, C 3 -C 10 cycloalkyl > C 6 to C 12 aryl or C 7 to C 15 alkylaryl,
- an alkyl radical linear or branched at C, C 6 and preferably C, C 4 such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl;
- X. ,, X 2 , X 3 independently of one another represent: a heteroatom chosen from nitrogen, optionally in a substituted form, sulfur and oxygen, - a unit - C (R a R b ) - or
- -C (R a ) with R a and R b representing a hydrogen atom or a substituent as defined above and with at least one of X 1 ( X 2 and X 3 representing a heteroatom, and - R 'and R "representing independently of each other a hydrogen atom, a substituent as defined above, together with the carbon atoms which carry them form a saturated, unsaturated or aromatic C 5 hydrocarbon ring to C 6 optionally comprising at least one heteroatom or appearing together and with the carbons which carry them an olefinic valential bond at the level of the 5-atom heterocycle.
- general formula II these are those mentioned above in the context of the definition of the heterocyclic, mono or polycyclic derivative capable of being functionalized according to the claimed process.
- - X T represents a heteroatom chosen from nitrogen, preferably in substituted form, sulfur and oxygen and preferably from sulfur and oxygen.
- R represents a linear or branched C 10 -C 10 alkyl group, C 3 -C 10 cycloalkyl, C 6 aryl
- R represents a linear or branched C 10 -C 10 alkyl group, C 3 -C 10 cycloalkyl, C 6 aryl
- C 12 or C 7 to C 15 alkylaryl such as for example a benzyl radical.
- the compound of formula I is more preferably a chloroalkane and preferably chlorobutane or chlorooctane.
- alkali metal used according to the invention may be sodium, lithium or potassium.
- Sodium is particularly suitable for the invention.
- This alkali metal can be introduced for the metallation reaction in the form of either a dispersion or in the molten state.
- This dispersed form can also be obtained in situ by vigorous stirring of the previously molten metal.
- the compound of general formula (I) is generally introduced in an amount of at least one equivalent with respect to the heterocyclic derivative and preferably in an amount of about 1 to 2 equivalents.
- the alkali metal preferably sodium, is present in an amount of about 2 to 4 equivalents of the heterocyclic derivative and preferably in an amount of about 2 to 2.5 equivalents.
- reaction of the heterocyclic derivative with the compound of formula (I) and the alkali metal can be carried out in an inert organic aprotic liquid under the appropriate reaction conditions.
- solvents suitable for the present invention mention may in particular be made of aiiphatic or aromatic hydrocarbons, aiiphatic, cycloaliphatic or aromatic ether-oxides.
- aiiphatic or cycloaliphatic hydrocarbons there may be mentioned more particularly paraffins such as in particular, alkanes of hexane type, heptane, octane, nonane, decane, undecane, dodecane, tetradecane or cyclohexane, and aromatic hydrocarbons such as, in particular, benzene, toluene, xylenes, cumene, petroleum fractions consisting of a mixture of alkylbenzenes, in particular Solvesso®-type fractions.
- diethyl ether dipropyl ether, diisopropyl ether, dibutyl ether, methyltertiobutyl ether , dipentyl oxide, diisopentyl oxide, dimethyl ether of ethylene glycol (or 1,2-dimethoxyethane), dimethyl ether of diethylene glycol (or 1,5-dimethoxy 3-
- Preferred solvents are anhydrous aromatic hydrocarbons such as toluene, ethers such as THF, xylenes and the like.
- the concentration of the heterocyclic derivative in the medium can vary within wide limits. Thus, it can be between 5 and 40% by weight of the medium and, preferably, is of the order of 20% by weight.
- the ⁇ -metallation reaction is carried out by first charging the alkali metal in the organic solvent. The whole is then kept under stirring.
- the consecutive addition of the heterocyclic derivative can be carried out according to two variants.
- the heterocyclic derivative is successively added, then the compound of general formula (I).
- Another variant may consist in introducing the heterocyclic derivative in the form of a mixture with the compound of general formula (I). The addition of this mixture to the reaction medium is then preferably carried out gradually.
- the introduction of the various compounds is carried out at a temperature between -20 ° C and 50 ° C and, preferably, at room temperature.
- the reaction is carried out at atmospheric pressure. It is preferred to carry out the reaction under a controlled atmosphere of inert gases such as nitrogen or rare gases such as argon.
- inert gases such as nitrogen or rare gases such as argon.
- the progress of the metallation reaction can if necessary be monitored by visualization of the disappearance of the alkali metal.
- the metallic form of the heterocyclic derivative is present in the reaction medium in a solubilized form.
- the ⁇ -metallation reaction product may not be isolated and used as such to lead to transformation derivatives of the heterocyclic derivative.
- an organic compound is introduced into the reaction medium capable of interacting by electrophobic substitution with said metallation product.
- n an integer varying from 1 to 3
- R 3 and R 3 ' are independently of one another are alkyl C -C 12 linear or branched or cyclo C 3 -C 12, or a trifluoromethyl radical and X' represents a hydrogen atom, halogen such as chlorine or bromine.
- the reaction per se can be carried out in a conventional manner.
- the electrophytic derivative is conventionally introduced in an amount of approximately 1.0 to 2 equivalents relative to the heterocyclic derivative ⁇ -metallized and preferably of approximately 1 to 1.5.
- the reaction can be carried out at a temperature between 20 ° C and 80 ° C and preferably between 20 ° C and 50 ° C. It is generally carried out at atmospheric pressure and under an inert atmosphere.
- the reaction product can be isolated at the end of the substitution reaction by any conventional extraction type technique for example.
- the heterocyclic derivative to be metallized and the chlorooctane (21 g) are then added successively. After 2 h of stirring at room temperature, the CO 2 is added and the reaction is stirred for 12 h at room temperature. The excess sodium can then be neutralized with methanol.
- the medium After acidification using a concentrated hydrochloric acid solution, the medium is concentrated under partial pressure. In terms of purity, it may be advantageous to carry out an extraction prior to acidification. This removes all traces of organic products. The residue obtained at the end of the concentration is then dissolved in acetone and the inorganic salts removed by filtration. If necessary, a recrystallization is carried out.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU43026/00A AU4302600A (en) | 1999-04-23 | 2000-04-21 | Method for alpha metalation of a derivative which is heterocyclic, monocyclic orpolycyclic and possesses at least one 5-atom heterocycle and is unsaturated or aromatic |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9905196A FR2793792B1 (fr) | 1999-04-23 | 1999-04-23 | Procede d'alpha-metallation d'un derive heterocyclique, monocyclique ou polycyclique et possedant au moins un heterocycle a 5 atomes, insature ou aromatique |
| FR99/05196 | 1999-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2000064905A2 true WO2000064905A2 (fr) | 2000-11-02 |
| WO2000064905A3 WO2000064905A3 (fr) | 2001-03-15 |
Family
ID=9544806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2000/001072 Ceased WO2000064905A2 (fr) | 1999-04-23 | 2000-04-21 | Procede d'alpha-metallation d'un derive heterocyclique, monocyclique ou polycyclique et possedant au moins un heterocycle a 5 atomes, insature ou aromatique |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU4302600A (fr) |
| FR (1) | FR2793792B1 (fr) |
| WO (1) | WO2000064905A2 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003033503A3 (fr) * | 2001-10-12 | 2003-06-12 | Clariant Gmbh | Procede de production, via des organometalliques, de produits intermediaires organiques |
| WO2004024738A1 (fr) * | 2002-08-31 | 2004-03-25 | Clariant Gmbh | Procede pour la production par voie organometallique d'intermediaires organiques au moyen de bases aryllithium |
| CN103833711A (zh) * | 2013-12-13 | 2014-06-04 | 成都丽璟科技有限公司 | 一种苯并呋喃-2-羧酸的制备方法 |
| CN114341114A (zh) * | 2019-06-11 | 2022-04-12 | 米其林集团总公司 | 包含芳杂环和咪唑环的新型1,3-偶极化合物 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3932545A (en) * | 1974-04-08 | 1976-01-13 | The National Hellenic Research Foundation | Alkali metal-containing, organometallic products |
-
1999
- 1999-04-23 FR FR9905196A patent/FR2793792B1/fr not_active Expired - Fee Related
-
2000
- 2000-04-21 AU AU43026/00A patent/AU4302600A/en not_active Abandoned
- 2000-04-21 WO PCT/FR2000/001072 patent/WO2000064905A2/fr not_active Ceased
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003033503A3 (fr) * | 2001-10-12 | 2003-06-12 | Clariant Gmbh | Procede de production, via des organometalliques, de produits intermediaires organiques |
| JP2005505628A (ja) * | 2001-10-12 | 2005-02-24 | クラリアント・ゲーエムベーハー | 有機金属化合物を経由して有機中間体生成物を製造する方法 |
| US7208614B2 (en) | 2001-10-12 | 2007-04-24 | Archimica Gmbh | Method for producing, via organometallic compounds, organic intermediate products |
| CN100347177C (zh) * | 2001-10-12 | 2007-11-07 | 齐明药化 | 经由有机金属化合物制备有机中间产物的方法 |
| WO2004024738A1 (fr) * | 2002-08-31 | 2004-03-25 | Clariant Gmbh | Procede pour la production par voie organometallique d'intermediaires organiques au moyen de bases aryllithium |
| CN103833711A (zh) * | 2013-12-13 | 2014-06-04 | 成都丽璟科技有限公司 | 一种苯并呋喃-2-羧酸的制备方法 |
| CN114341114A (zh) * | 2019-06-11 | 2022-04-12 | 米其林集团总公司 | 包含芳杂环和咪唑环的新型1,3-偶极化合物 |
| CN114341114B (zh) * | 2019-06-11 | 2023-11-10 | 米其林集团总公司 | 包含芳杂环和咪唑环的1,3-偶极化合物 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000064905A3 (fr) | 2001-03-15 |
| FR2793792A1 (fr) | 2000-11-24 |
| AU4302600A (en) | 2000-11-10 |
| FR2793792B1 (fr) | 2001-10-26 |
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