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EP1289934A1 - Procede de production d'amides ou d'esters - Google Patents

Procede de production d'amides ou d'esters

Info

Publication number
EP1289934A1
EP1289934A1 EP01949406A EP01949406A EP1289934A1 EP 1289934 A1 EP1289934 A1 EP 1289934A1 EP 01949406 A EP01949406 A EP 01949406A EP 01949406 A EP01949406 A EP 01949406A EP 1289934 A1 EP1289934 A1 EP 1289934A1
Authority
EP
European Patent Office
Prior art keywords
triazine
amine
component
amino acids
constituent
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.)
Withdrawn
Application number
EP01949406A
Other languages
German (de)
English (en)
Inventor
Harald GRÖGER
Jürgen SANS
Anita Barthuber
Roswitha Haindl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of EP1289934A1 publication Critical patent/EP1289934A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/08—Bridged systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00—Preparation of carboxylic acid amides
    • C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40—Nitrogen atoms
    • C07D251/42—One nitrogen atom
    • C07D251/46—One nitrogen atom with oxygen or sulfur atoms attached to the two other ring carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
    • C07K1/06—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length using protecting groups or activating agents
    • C07K1/08—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length using protecting groups or activating agents using activating agents
    • C07K1/084—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length using protecting groups or activating agents using activating agents containing nitrogen

Definitions

  • the present invention relates to a process for the preparation of amides or esters.
  • CDMT 2-Chloro-4,6-dimethoxy-1,3,5-triazine
  • Triazine component proven. This is additionally required
  • the term “equivalent” is understood to mean, by definition, the molar amount of the size under consideration (for example 1,3,5-triazine or the tertiary amine) based on the molar proportion of those used for calculating the theoretical yield of the amide product Component or - if the component relevant for calculating the theoretical yield of the amide product contains several reactive functional groups (eg in the case of a dicarboxylic acid) - the reactive functional group.
  • the above-mentioned processes lead to the desired products in good to very good yields and have already been successfully described for a large number of very different applications. A large number of pharmaceutically interesting amides, in particular peptides, and esters are accessible in this way.
  • An N-protected amino acid or a C-terminal peptide can be used as the carboxylic acid for peptide synthesis, and a carboxyl-protected amino acid or an N-terminal peptide is typically used as the amine.
  • the base N-methylmorpholine commonly used has a relatively high molecular weight and accordingly leads to large amounts of waste.
  • the use of a tertiary amine with a smaller molar mass would therefore be desirable for reasons of atomic economy and from an ecological point of view, not least because of the significantly reduced waste quantities in industrial applications.
  • all attempts with bases of small molecular weight have so far been unsuccessful.
  • the use of the (bi-) cyclic diamine, which is essential to the invention, each having tertiary amino groups, together with a 1,3,5-triazine acts as an excellent coupling system and to the amides or esters in very good to quantitative yields of usually> 80% leads.
  • the desired products are obtained with a high education rate, which significantly exceeds the education rates known from the prior art.
  • the (bi-) cyclic diamine component essential to the invention can also be used in substoichiometric amounts. Even when using only 0.5 equivalents of (bi-) cyclic diamine, the reaction is still very effective.
  • carboxylic acids is not limited to simple carboxylic acids, but rather includes all types of carboxylic acids.
  • RCOOH C 6 . 14- aryl, optionally substituted with one or more and C 3 _ 14 cycloalkyl.
  • An example is (t-butyl) -phenyl as R.
  • All types of amines can also be used as the amine component.
  • the method is particularly suitable when using amino acids, for example a- and ⁇ -amino acids, preferably in enantiomerically pure form, of C-protected amino acids or C-protected peptides, each with at least one free amino group, as an amine component, or a compound of the gen.
  • Formula R-NH 2 with R C 6 . 14- aryl, optionally substituted with one or more C, _ 10 - alkyl groups, C.,. 17 alkyl and C 3 . 14 cycloalkyl.
  • the method is therefore also particularly suitable for the production of peptides by forming the peptide bond in the course of a condensation reaction, starting from correspondingly suitable carboxylic acid and amine components.
  • This reaction is particularly efficient with regard to the rate and speed of education. Racemization, which is a significant problem with common coupling reagents such as dicyclohexylcarbodiimide (DCC), does not occur.
  • DCC dicyclohexylcarbodiimide
  • the 1,3,5-triazine component is preferably a chlorine-substituted 1,3,5-triazine and has the following general structure:
  • radicals R 1 and R 12 each independently have the meanings O-alkyl having up to 14 carbon atoms, preferably OCH 3 , OC 2 H 5 , O-aryl having up to 14 carbon atoms, alkyl having up to 14 carbon atoms, N (alkyl) 2 having up to 18 carbon atoms, Cl and Br and R 13 is Cl.
  • the present invention provides 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) as a particularly suitable 1,3,5-triazine component.
  • CDMT 2-chloro-4,6-dimethoxy-1,3,5-triazine
  • the reaction is also successful when using other derivatives with a 1,3,5-triazine fragment, e.g. 2,4-dichloro-6-methoxy-1, 3,5-triazine or cyanuric chloride.
  • N, N'-dimethyl-1,4-piperazine is preferably used as the cyclic diamine with two tertiary amino groups, but other representatives of these are also used
  • Class of compounds such as the bicyclic diazabicyclo [2.2.2] octane (DABCO) or the 1,4-diethylpiperazine have proven to be extremely suitable for the process according to the invention.
  • DABCO bicyclic diazabicyclo [2.2.2] octane
  • 1,4-diethylpiperazine have proven to be extremely suitable for the process according to the invention.
  • the coupling reaction is usually carried out by carrying out a carboxylic acid with an amine or alcohol in the presence of the respective triazine and the (bi-) cyclic diamine.
  • Carboxylic acid is preferably initially introduced, then the (bi-) cyclic diamine with the two tertiary amino groups is added, followed by the t ⁇ azin component used in each case. Finally, the amine or alcohol component is added.
  • the order of addition should not be limited to this sequence. Rather, the reaction can also be carried out in any order in which the individual components are added.
  • the reaction is preferably carried out at reaction temperatures between -80 ° C. and + 150 ° C., particularly preferably between -20 ° C. and +40 ° C. and in particular between -5 ° C. and 25 ° C.
  • the present invention also provides that the reaction in the presence of an organic solvent such as tetrahydrofuran, methyl tert-butyl ether, ethyl acetate, halogenated solvents such as e.g. Dichloromethane, or any mixtures thereof can be carried out.
  • an organic solvent such as tetrahydrofuran, methyl tert-butyl ether, ethyl acetate, halogenated solvents such as e.g. Dichloromethane, or any mixtures thereof can be carried out.
  • the reaction is best when the ratio of carboxylic acid to triazine component, depending on the chlorine content of the triazine component, is 0.50 to 1.50 and preferably between 0.95 and 1.0.
  • the reactants carboxylic acid and amine or alcohol component can be used largely stoichiometrically in a wide range between 0.2 and 5.0, although a ratio between 0.80 and 1.20 is preferred; one of these two reactants can also be used in excess.
  • the ratio between (bi-) cyclic diamine and the triazine component should be between 0.30 and 1.10, in particular between 0.30 and 0.75 and particularly preferably between 0.47 and 0.53.
  • the newly found coupling system using preferably only semi-stoichiometric proportions of a (bi-) cyclic tertiary Diamine and stoichiometric proportions of a 1,3,5-triazine allow the production of amides or peptides with high yields of up to 100%. These yields not only exceed the results from the prior art, but also guarantee a significantly lower amount of waste. Thus, assuming the same yields using N-methylmorpholine according to the prior art, twice as much waste is obtained as when using N, N'-dimethyl-1,4-piperazine according to the invention. The absolute amount of waste is further reduced compared to the prior art, since the yields achieved with the present process are also higher.
  • the present method thus has the following advantages: (a) Higher yields compared to the prior art.
  • the present invention claims a process for the preparation of amides or esters from carboxylic acids and an amine or alcohol component in the presence of a 1,3,5-triazine and optionally in the presence of an organic solvent and a tertiary amine, in which a (bi -) Cyclic diamine or an adduct formed therefrom with the triazine component in the preferred stoichiometric ratio to the triazine component from 0.30 to 1.10 is used; the stoichiometric ratio of carboxylic acid to Amine or alcohol component should be between 0.2 and 5.0 and the molar ratio of carboxylic acid to triazine component 0.5 to 1.5.
  • Amino acids such as N-protected amino acids and peptides are possible as carboxylic acid components and amino acids or a C-protected peptide as amine components.
  • the preferred 1,3,5-triazine is 2-chloro-4,6-dimethoxy-1,3,5-triazine (CDMT) and the cyclic diamine is N, N'-dimethyl-1,4-piperazine.
  • CDMT 2-chloro-4,6-dimethoxy-1,3,5-triazine
  • the cyclic diamine is N, N'-dimethyl-1,4-piperazine.
  • the present invention also claims adducts of (bi-) cyclic diamine and 1,3,5-triazine. In comparison with the prior art, the present process achieves higher yields with shorter reaction times and significantly lower amounts of waste tertiary amine base are obtained.
  • the organic phase was washed successively with 10 ml of saturated sodium bicarbonate solution and 10 ml of water, then dried with sodium sulfate and, after filtration on a rotary evaporator, freed from the solvent.
  • the N-benzyl-4-fe7t-butylbenzoic acid amide was obtained as a white solid in a yield of 66%.
  • the organic phase was washed first with 30 ml of saturated sodium bicarbonate solution and then with 30 ml of water, then dried with sodium sulfate and, after filtration, the solvent was distilled off. In this way, the desired ester was obtained in a yield of 85%.
  • the coupling system consisting of a 1,3,5-triazine and a cyclic diamine has now also been found to be a coupling system with improved chemical efficiency.
  • the reaction time could be shortened considerably: A quantitative conversion is already observed after (less than) an hour of reaction time. If instead of 1,017 equivalents of N-methylmorpholine of the prior art (see comparative example 1), 1,017 equivalents of cyclic diamine, 1,4-dimethylpiperazine, are used, instead of 67% yield as in the prior art (comparative example 1 ) achieved an increased yield of 93% (Example 8).
  • the coupling reaction also proceeds very efficiently with other (bi-) cyclic diamines, each with tertiary amino groups than the 1,4-dimethylpiperazine.
  • DABCO diaminobicyclo [2.2.2] octane
  • Example 5 documents that the new coupling reagent can also be used efficiently for coupling aliphatic carboxylic acids (yield: 90%).
  • the proposed method is also outstandingly suitable for coupling unprotected or N-protected amino acids or corresponding peptides.
  • the presence of additional functional groups is tolerated, as shown in Example 6.
  • the coupling with the new system is highly efficient with 85% yield in the synthesis of the coupling product starting from BOC-Ser-OH and H-Val-OBzl * tosylate (Example 6).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Medicinal Chemistry (AREA)
  • Molecular Biology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne un procédé de production d'amides ou d'esters à partir d'acides carboxyliques et d'un composé amine ou alcool en présence d'une 1,3,5-triazine et éventuellement en présence d'un solvant organique et d'une amine tertiaire. Selon l'invention, on utilise comme amine tertiaire une diamine (bi)cyclique ou un produit d'addition formé à partir de cette dernière avec le composé triazine, dans un rapport stoechiométrique diamine/triazine compris de préférence entre 0,30 et 1,10 ; le rapport stoechiométrique acide carboxylique/amine ou alcool est compris entre 0,2 et 5,0 et le rapport molaire acide carboxylique/triazine est compris entre 0,5 et 1,5. Les composés acides carboxyliques utilisés sont des acides aminés, par ex. des acides aminés N-protégés et des peptides, tandis que les composés amines utilisés sont des acides aminés (C-protégés) ou un peptide C-protégé. On utilise de préférence comme 1,3,5-triazine la 2-chloro-4,6-diméthoxy-1,3,5-triazine (CDMT) et comme diamine cyclique la N,N'-diméthyl-1,4-pipérazine. Outre ce procédé mis en oeuvre à des températures comprises entre -80 et + 150 °C, en présence d'un solvant organique, l'invention concerne des produits d'addition de diamine (bi)cyclique et de 1,3,5-triazine. Ce procédé permet d'obtenir des rendements supérieurs et des temps de réaction inférieurs à ceux de la technique antérieure. En outre, la quantité produite de déchets de bases d'amines tertiaires est considérablement réduite.
EP01949406A 2000-06-14 2001-06-12 Procede de production d'amides ou d'esters Withdrawn EP1289934A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10029139A DE10029139A1 (de) 2000-06-14 2000-06-14 Verfahren zur Herstellung von Amiden oder Estern
DE10029139 2000-06-14
PCT/EP2001/006655 WO2001096282A1 (fr) 2000-06-14 2001-06-12 Procede de production d'amides ou d'esters

Publications (1)

Publication Number Publication Date
EP1289934A1 true EP1289934A1 (fr) 2003-03-12

Family

ID=7645595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01949406A Withdrawn EP1289934A1 (fr) 2000-06-14 2001-06-12 Procede de production d'amides ou d'esters

Country Status (6)

Country Link
US (1) US20030181753A1 (fr)
EP (1) EP1289934A1 (fr)
JP (1) JP2004503522A (fr)
AU (1) AU2001270569A1 (fr)
DE (1) DE10029139A1 (fr)
WO (1) WO2001096282A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602005027663D1 (de) * 2004-02-10 2011-06-09 Japan Science & Tech Agency Dehydratisierendes kondensationsmittel, das sich an der phasengrenze mit wasser anreichert
PL211025B1 (pl) * 2004-03-29 2012-03-30 Zbigniew Kamiński Czwartorzędowe sole N-(3,5-dipodstawionych-2,4,6-triazynylo-1-)amoniowych kwasów sulfonowych i ich zastosowanie
GB0912975D0 (en) * 2009-07-24 2009-09-02 Syngenta Ltd Formulations
MX2012004685A (es) * 2009-10-22 2012-06-14 Polydemix Inc Procesos para preparar un compuesto polimerico.
AU2011229164B2 (en) * 2010-03-16 2015-11-26 Janssen Pharmaceuticals, Inc. Processes and intermediates for preparing a macrocyclic protease inhibitor of HCV
PL391832A1 (pl) 2010-07-14 2012-01-16 Politechnika Łódzka Sole N-triazynyloamoniowe, sposób ich wytwarzania oraz ich zastosowanie
EP3243816A1 (fr) * 2016-05-10 2017-11-15 Studiengesellschaft Kohle mbH Procédé de préparation d'un hydrocarbure aromatique ou hétéroaromatique substitué et son utilisation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH574759A5 (fr) * 1971-04-05 1976-04-30 Ciba Geigy Ag
DD290658A5 (de) * 1989-07-07 1991-06-06 ��������@�K@�����������������@���@���k�� Mittel und verfahren zur schnellen peptidkupplung
US6458948B1 (en) * 1999-03-08 2002-10-01 Tokuyama Corporation Process for producing carboxylic acid derivative and condensing agent comprising quaternary ammonium salt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0196282A1 *

Also Published As

Publication number Publication date
AU2001270569A1 (en) 2001-12-24
US20030181753A1 (en) 2003-09-25
WO2001096282A1 (fr) 2001-12-20
DE10029139A1 (de) 2002-01-03
JP2004503522A (ja) 2004-02-05
WO2001096282B1 (fr) 2002-04-04

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