WO1999065859A1 - Katalytisch titan(iv)-oxid vermittelte geminale symmetrische dialkylierung von carbonsäureamiden - Google Patents
Katalytisch titan(iv)-oxid vermittelte geminale symmetrische dialkylierung von carbonsäureamiden Download PDFInfo
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- WO1999065859A1 WO1999065859A1 PCT/EP1999/004251 EP9904251W WO9965859A1 WO 1999065859 A1 WO1999065859 A1 WO 1999065859A1 EP 9904251 W EP9904251 W EP 9904251W WO 9965859 A1 WO9965859 A1 WO 9965859A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/66—Preparation of compounds containing amino groups bound to a carbon skeleton from or via metallo-organic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/02—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements
- C07D295/027—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements containing only one hetero ring
- C07D295/03—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements containing only one hetero ring with the ring nitrogen atoms directly attached to acyclic carbon atoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0201—Oxygen-containing compounds
- B01J31/0211—Oxygen-containing compounds with a metal-oxygen link
- B01J31/0212—Alkoxylates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0231—Halogen-containing compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
- B01J31/0274—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255 containing silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
- B01J31/0275—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255 also containing elements or functional groups covered by B01J31/0201 - B01J31/0269
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/34—Other additions, e.g. Monsanto-type carbonylations, addition to 1,2-C=X or 1,2-C-X triplebonds, additions to 1,4-C=C-C=X or 1,4-C=-C-X triple bonds with X, e.g. O, S, NH/N
- B01J2231/341—1,2-additions, e.g. aldol or Knoevenagel condensations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/40—Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
Definitions
- the present invention relates to a process for the symmetrical disubstitution of carboxamides on the geminal carbonyl carbon atom by means of Grignard reagents in the presence of titanium dioxide and the compounds of the general formula (I) prepared by this process
- R 2 or R 1 and R 3 or R 8 and R 9 can be connected to one another and together form a cyclic ring with 3 to 8 C atoms, which optionally also has at least one further heteroatom selected from the group -S-, -O- and -NR 6 - contains,
- R 4 A Ar, -Si (R 6 ) 3 , -Sn (R 6 ) 3 , -SR 7 , -OR 7 , -NR 8 R 9 , wherein R 8 and
- R 9 have the given meanings or R 8 and R 9 or two radicals R 4 can be connected to one another and together form a cyclic ring with 3 to 8 C atoms, which optionally also has at least one heteroatom selected from the group -S in addition to a nitrogen atom -, -O- and -NR 6 - may contain;
- R 6 , R 7 , R 8 and R 9 independently of one another A or Ar
- A is a straight-chain or branched alkyl radical with 1 to 10 C-
- Atoms straight-chain or branched alkenyl radical with 2 to 10 carbon atoms, or straight-chain or branched Alkynyl radical with 2-10 C atoms or substituted or unsubstituted cycloalkyl radical with 3 - 8 C atoms, mono- or polyunsaturated cycloalkyl radical with 3 - 8 C atoms and
- Ar is a substituted or unsubstituted aryl radical with 6-20 C
- the products are used in the symmetrical dialkylations of amides known to date, which were carried out using a Grignard reagent mostly only obtained as by-products.
- the yields achieved range from a few percent to a maximum of about 50%.
- R, R 2 and R 3 independently of one another
- H, A, Ar, -Si (R 6 ) 3 , -Sn (R 6 ) 3 , -SR 7 , -OR 7 , -NR 8 R 9 or R 1 and R 2 or R 1 and R 3 or R 8 and R 9 can be connected to one another and together form a cyclic ring with 3 to 8 carbon atoms, which optionally contains, in addition to nitrogen, at least one further heteroatom selected from the group -S-, -O- and -NR 6 -,
- R 4 A Ar, -Si (R 6 ) 3 , -Sn (R 6 ) 3 , -SR 7 , -OR 7 , -NR 8 R 9 , wherein R 8 and
- R 9 have the given meanings or R 8 and R 9 or two radicals R 4 can be connected to one another and together form a cyclic ring with 3 to 8 C atoms, which optionally also has at least one heteroatom selected from the group -S in addition to a nitrogen atom -, -O- and -NR 6 - may contain;
- R 6 , R 7 , R 8 and R 9 independently of one another A or Ar
- A is a straight-chain or branched alkyl radical with 1 to 10 C-
- Atoms straight-chain or branched alkenyl radical with 2 to 10 C atoms, or straight-chain or branched alkynyl radical with 2-10 C atoms or substituted or unsubstituted cycloalkyl radical with 3 - 8 C atoms, mono- or polyunsaturated cycloalkyl radical with 3 - 8 C -Atoms and Ar is a substituted or unsubstituted aryl radical with 6-20 C
- R 1 , R 2 and R 3 have the meanings given for formula (I), by reaction with a nucleophilic reagent of the general form (purple) or a nucleophilic reagent of the general formula (IIIb)
- R 4 has the meaning given for formula (I), and
- the process is carried out in the presence of catalytic amounts of a metal oxide selected from the group consisting of titanium dioxide, zirconium dioxide and hafnium dioxide.
- the invention also relates to a corresponding process which is carried out in the presence of a cocatalyst.
- the present invention therefore also includes a process in which metal isopropylates and alkylsilyl halides are used as cocatalysts; namely metal isopropylates of the general formula (IV) and alkylsilyl halides of the general formula (V)
- M 'AI Ca, Na, K, Si or Mg, preferably Mg or Na
- s is an integer from 1 to 4 and the oxidation state of the metal
- n 1 to '10
- the invention thus also relates to a method which is characterized in that
- a ') magnesium shavings a carboxamide of the general formula (II), 1-15 mol% of a metal oxide selected from the group consisting of titanium dioxide, zirconium dioxide and hafnium dioxide, based on the carboxamide at room temperature under an inert gas atmosphere in a solvent selected from the group consisting of toluene, THF, n-hexane, benzene and diethyl ether,
- carboxamides of the general formula (II) can be reacted with good yields in the process described here, in which R 1 , R 2 and R 3 can independently assume the following meanings:
- Cycloalkyl with 3-8 C atoms such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl or corresponding methyl- or ethyl-substituted cycloalkyl groups or mono- or polyunsaturated cycloalkyl groups, such as cyclopentenyl or cyclopentadienyl or branched or unbranched alkenyl with 2 up to 10 carbon atoms, such as allyl, vinyl, isopropenyl, propenyl or branched or unbranched alkynyl having 2 to 10 carbon atoms, such as ethynyl, propynyl or
- Group N0 2 , F, Cl, Br, NH 2 , NHA, NA 2 , OH and OA where A can have the meanings given above, can be single, multiple or completely halogenated, preferably fluorinated, or
- Phenylethynyl Good yields are also achieved in particular with carboxamides in which R 1 and R 2 or R 1 and R 3 together form a cyclic ring with 3-8 C atoms which, in addition to nitrogen, contains further heteroatoms, such as -S-, -O- or -NR 6 - contains.
- Particularly preferred here are compounds in which a simple cyclic ring is formed by R 1 and R 2 or R 1 and R 3 , which includes the nitrogen of the carboxamide or in which R 1 and R 2 or R 1 and R 3 form a cyclic ring form, which contains an oxygen atom as another heteroatom.
- Grignard or lithium organic can be used as nucleophilic reagent
- R 4 preferably represents an alkyl radical having 1 to 10 carbon atoms, such as methyl, ethyl, n- or i-propyl, n-, sec- or t-butyl, pentyl, hexyl,
- aryl radicals with 6 to 20 C atoms optionally unsubstituted or mono- or polysubstituted, such as phenyl, naphthyl, anthryl, phenanthryl, mono- or polysubstituted by substituents selected from the group NO 2 , F, Cl, Br, NH 2 , NHA, NA 2 , OH and OA, where A can have the meanings given above, can be single, multiple or completely halogenated, preferably fluorinated, or
- aralkyl radicals with 7 to 20 carbon atoms such as benzyl
- substituents selected from the group NO 2 , F, Cl, Br, NH 2 , NHA, NA 2 , OH and OA, where A is the can have meanings given above, can be single, multiple or fully halogenated, preferably fluorinated
- Alkynyl group can take the given meanings, e.g. in phenylethynyl. 5
- R 4 particularly preferably has the meaning of an alkyl radical, such as, for example, methyl, ethyl, n- or i-propyl, n-, sec- or t-butyl, pentyl, hexyl, or a cycloalkyl radical, such as, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl , or an aryl radical, such as phenyl, or an aralkyl radical, such as benzyl.
- an alkyl radical such as, for example, methyl, ethyl, n- or i-propyl, n-, sec- or t-butyl, pentyl, hexyl
- a cycloalkyl radical such as, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl
- an aryl radical such as
- the radical Z in the general formulas (purple) or (IIIb) preferably represents a radical MgX with X for Cl or Br or the radical Z for lithium.
- Grignard compounds such as: methylmagnesium bromide, ethylmagnesium bromide, n- or i-propylmagnesium bromide, i-, sec- or tert-butylmagnesium bromide, n-hexylmagnesium bromide, cyclohexylmagnesium chloride, allylmagnesiumbromidomomesomomomagnesomomomesomomomagnesomomesomomomagnesomomomagnesium bromide, used.
- M 'AI Ca, Na, K, Si or Mg, preferably Mg or Na
- s is an integer from 1 to 4 and the oxidation state of the metal
- Metal isopropylates are preferably used in which s is an integer from 1 to 4 and the oxidation state of the metal and M 'Al, Ca, Na, K, Si or Mg means. Mg or Na are particularly preferred.
- Alkylsilyl halides in which R denotes alkyl having 1 to 6 C atoms are preferably used. Those in which R is alkyl with 1 to 3 C atoms and X is chlorine are particularly preferred.
- silicon compounds are suitable as cocatalysts:
- metal dioxide selected from the group consisting of titanium dioxide, Zirconia and hafnium dioxide can be used as a catalyst.
- Powdered titanium (IV) dioxide is preferably used. In the simplest case, this can be a technical quality. In order to be able to ensure simple separation after the reaction has taken place, it is advantageous to choose a quality which is not too finely divided. That through
- Heating pre-dried metal dioxide, preferably titanium dioxide, is used as a suspension in a suitable, pre-dried solvent.
- suitable solvents are e.g. aliphatic or aromatic hydrocarbons or ethers.
- Solvents selected from the group consisting of toluene, THF, n-hexane, benzene and diethyl ether are preferably used, which are dried before the reaction by methods known to the person skilled in the art. Drying can be done using magnesium sulfate, calcium chloride, sodium, potassium hydroxide or other methods.
- a preferred embodiment of the process according to the invention is that the titanium dioxide used as catalyst in an amount of 1 to 15, preferably 1, 5 to 14, in particular 2 to 10, and very particularly preferably 3 to 6 mol%, based on one mol of the amide used as starting material is presented in the form of a suspension which is adjusted to a temperature of 10 to 30 ° C., preferably to 15-25 ° C., particularly preferably to a temperature of about 20 ° C. Under an inert gas atmosphere (nitrogen or argon), the starting material is slowly added dropwise either as such in liquid form or dissolved in a solvent selected from the group consisting of toluene, THF, n-hexane, benzene and diethyl ether with stirring.
- a solvent selected from the group consisting of toluene, THF, n-hexane, benzene and diethyl ether with stirring.
- nucleophilic reagent prepared according to methods well known to the person skilled in the art, should take place so slowly that the temperature of the reaction mixture does not exceed 50.degree. It is advantageous if the nucleophilic reagent, ie the Grignard reagent or the lithium compound, is added with thorough mixing, preferably with intensive stirring.
- the nucleophilic reagent used preferably a Grignard reagent, is added in an amount of 2.1 to 3 moles per mole of reactant reactant.
- the Grignard reagent is preferably added in an amount of 2.2 to 2.6 mol based on 1 mol of starting material. If a nucleophilic reagent or Grignard reagent of the general formula (IIIb) is used, it is added to the reaction solution corresponding to twice the number of reactive groups, only in equimolar amounts based on the starting material.
- the reaction mixture is stirred at constant temperature for some time until the reaction is complete.
- the Grignard reagent is prepared in situ by reacting magnesium with a compound of the general formula (purple ') or (IIIb'), in which R 4 and X have the meanings given above.
- the amount of magnesium is preferably 2 to 5 times the molar amount, preferably 2.8 to 3.2 times the molar amount, based on the compounds of the general formula (II) used as starting material and the amount of the compound of the general formula (purple ') or (IIIb') is 2 to 3.8 times the molar amount, preferably 2.2 to 2.6 times the molar amount based on the compound of the general formula (II).
- symmetrically substituted amino compounds of the general formula (I) can be prepared with good or satisfactory yields within reasonable reaction times.
- the reaction times can be considerably shortened, in the best case to one hour, without thereby reducing the yields achieved to have to.
- Metal dioxide selected from the group consisting of titanium dioxide, zirconium dioxide and hafnium dioxide, as a catalyst and a compound of the general
- Tetrahydrofuran was added dropwise with stirring. 5 mmol of cocatalyst, likewise taken up in dried tetrahydrofuran, are slowly added to this mixture with stirring. The mixture is stirred at 20 ° C. for 5 minutes and then 12 mmol of Grignard reagent are added so slowly that the temperature of the reaction mixture does not rise above 50 ° C. Until the implementation is complete, another
- reaction mixture can be worked up in a manner known to the person skilled in the art.
- the products can be used as salts with the help of hydrochloric acid solutions such.
- hydrochloric acid solutions such as a 1 molar ethereal hydrochloric acid solution, precipitated and filtered, and, if necessary, purified by recrystallization.
- a suitable amount of saturated ammonium chloride solution and water can be added and stirring is continued intensively for several hours (1-3 hours).
- the resulting precipitate is separated off and washed with a little ether, preferably diethyl ether.
- the filtrate is made basic (pH> 10) by adding a suitable alkali, such as a NaOH, KOH, sodium or potassium carbonate solution, preferably sodium hydroxide solution.
- a suitable alkali such as a NaOH, KOH, sodium or potassium carbonate solution, preferably sodium hydroxide solution.
- the phases that form are then separated and the aqueous phase is extracted several times (e.g. three times with 30 ml each in the above special case) with diethyl ether.
- the combined organic phases are washed with (e.g. 15 ml) saturated sodium chloride solution and can be dried over potassium carbonate, magnesium sulfate or sodium sulfate and filtered.
- the products can be purified in various ways by methods known to those skilled in the art, e.g. in the following way:
- Acid solutions preferably an aqueous hydrochloric acid solution, extracted.
- the extract obtained is adjusted to pH> 10 using lyes, preferably 2 M sodium hydroxide solution, and extracted at least once, preferably several times, with diethyl ether.
- the organic phases obtained in this way, which contain the reaction product, can optionally be dried over potassium carbonate, magnesium sulfate or sodium sulfate and freed from the organic solvent under vacuum.
- the Grignard reagents can also be replaced by the corresponding lithium compounds.
- the corresponding lithium compounds can, like that
- (I) can e.g. B. as intermediates for the production of sulfur- or selenium-containing amines for the chiral catalysis of diethylzinc syntheses (literature: Werth, Thomas; Tetrahedron Lett. 36; 1995, 7849-7852, Werth, Thomas et all. Helv. Chim. Acta 79, 1996, 1957-1966) can be used.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/719,810 US6420302B1 (en) | 1998-06-18 | 1999-06-18 | Catalyst system |
EP99929280A EP1087928A1 (de) | 1998-06-18 | 1999-06-18 | Katalytisch titan(iv)-oxid vermittelte geminale symmetrische dialkylierung von carbonsäureamiden |
JP2000554686A JP2002518362A (ja) | 1998-06-18 | 1999-06-18 | カルボン酸アミドの触媒酸化チタン(iv)誘導性ジェミナル対称ジアルキル化 |
KR1020007014274A KR20010052918A (ko) | 1998-06-18 | 1999-06-18 | 산화 티탄(4) 촉매에 의해 매개된 카복실산 아미드의동일탄소상 대칭적 디알킬화 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19827164.6 | 1998-06-18 | ||
DE19827164A DE19827164A1 (de) | 1998-06-18 | 1998-06-18 | Katalytisch Titan(IV)-oxid vermittelte geminale symmetrische Dialkylierung von Carbonsäureamiden |
Publications (1)
Publication Number | Publication Date |
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WO1999065859A1 true WO1999065859A1 (de) | 1999-12-23 |
Family
ID=7871278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP1999/004251 WO1999065859A1 (de) | 1998-06-18 | 1999-06-18 | Katalytisch titan(iv)-oxid vermittelte geminale symmetrische dialkylierung von carbonsäureamiden |
Country Status (6)
Country | Link |
---|---|
US (2) | US6420302B1 (de) |
EP (1) | EP1087928A1 (de) |
JP (1) | JP2002518362A (de) |
KR (1) | KR20010052918A (de) |
DE (1) | DE19827164A1 (de) |
WO (1) | WO1999065859A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001044160A2 (de) * | 1999-12-14 | 2001-06-21 | Merck Patent Gmbh | Verfahren zur herstellung kombinatorischer aminbibliotheken |
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US20070087977A1 (en) * | 2004-11-16 | 2007-04-19 | Wendye Robbins | Methods and compositions for treating pain |
WO2007067733A2 (en) * | 2005-12-09 | 2007-06-14 | Massachusetts Institute Of Technology | Compositions and methods to monitor rna delivery to cells |
US9267937B2 (en) * | 2005-12-15 | 2016-02-23 | Massachusetts Institute Of Technology | System for screening particles |
ES2776100T3 (es) * | 2006-03-31 | 2020-07-29 | Massachusetts Inst Technology | Sistema para el suministro dirigido de agentes terapéuticos |
CA2652280C (en) | 2006-05-15 | 2014-01-28 | Massachusetts Institute Of Technology | Polymers for functional particles |
WO2007137117A2 (en) * | 2006-05-17 | 2007-11-29 | Massachusetts Institute Of Technology | Aptamer-directed drug delivery |
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WO2008019142A2 (en) * | 2006-08-04 | 2008-02-14 | Massachusetts Institute Of Technology | Oligonucleotide systems for targeted intracellular delivery |
US8133474B2 (en) * | 2006-09-15 | 2012-03-13 | Massachusetts Institute Of Technology | Sensors for fluorescence and magnetic resonance imaging |
WO2008147456A2 (en) * | 2006-11-20 | 2008-12-04 | Massachusetts Institute Of Technology | Drug delivery systems using fc fragments |
CA2671850A1 (en) * | 2006-12-08 | 2008-06-19 | Massachusetts Institute Of Technology | Delivery of nanoparticles and/or agents to cells |
EP2134830A2 (de) * | 2007-02-09 | 2009-12-23 | Massachusetts Institute of Technology | Oszillations-zellkultur-bioreaktor |
US20090074828A1 (en) | 2007-04-04 | 2009-03-19 | Massachusetts Institute Of Technology | Poly(amino acid) targeting moieties |
WO2008124634A1 (en) | 2007-04-04 | 2008-10-16 | Massachusetts Institute Of Technology | Polymer-encapsulated reverse micelles |
BRPI0817664A2 (pt) * | 2007-10-12 | 2015-03-24 | Massachusetts Inst Technology | Nanopartículas, método para preparar nanopartículas e método para tratar terapeuticamente ou profilaticamente um indivíduo |
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EP2640190A4 (de) | 2010-11-05 | 2016-05-11 | Selecta Biosciences Inc | Modifizierte nikotinische verbindungen und zugehörige verfahren |
BR112013027508A2 (pt) | 2011-04-29 | 2017-03-14 | Selecta Biosciences Inc | nanotransportadores sintéticos tolerogênicos para reduzir respostas de anticorpos |
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1998
- 1998-06-18 DE DE19827164A patent/DE19827164A1/de not_active Withdrawn
-
1999
- 1999-06-18 KR KR1020007014274A patent/KR20010052918A/ko not_active Application Discontinuation
- 1999-06-18 WO PCT/EP1999/004251 patent/WO1999065859A1/de not_active Application Discontinuation
- 1999-06-18 JP JP2000554686A patent/JP2002518362A/ja active Pending
- 1999-06-18 EP EP99929280A patent/EP1087928A1/de not_active Withdrawn
- 1999-06-18 US US09/719,810 patent/US6420302B1/en not_active Expired - Fee Related
-
2002
- 2002-06-05 US US10/162,257 patent/US20030009029A1/en not_active Abandoned
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001044160A2 (de) * | 1999-12-14 | 2001-06-21 | Merck Patent Gmbh | Verfahren zur herstellung kombinatorischer aminbibliotheken |
WO2001044160A3 (de) * | 1999-12-14 | 2002-03-07 | Merck Patent Gmbh | Verfahren zur herstellung kombinatorischer aminbibliotheken |
Also Published As
Publication number | Publication date |
---|---|
EP1087928A1 (de) | 2001-04-04 |
KR20010052918A (ko) | 2001-06-25 |
DE19827164A1 (de) | 1999-12-23 |
JP2002518362A (ja) | 2002-06-25 |
US6420302B1 (en) | 2002-07-16 |
US20030009029A1 (en) | 2003-01-09 |
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