WO2013123634A1 - Process for production of dfmb derivatives - Google Patents
Process for production of dfmb derivatives Download PDFInfo
- Publication number
- WO2013123634A1 WO2013123634A1 PCT/CN2012/071346 CN2012071346W WO2013123634A1 WO 2013123634 A1 WO2013123634 A1 WO 2013123634A1 CN 2012071346 W CN2012071346 W CN 2012071346W WO 2013123634 A1 WO2013123634 A1 WO 2013123634A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compound
- formula
- process according
- group
- alkoxy
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 37
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 10
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 10
- 239000003849 aromatic solvent Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract description 7
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 6
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 5
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims abstract description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 5
- 125000003262 carboxylic acid ester group Chemical group [H]C([H])([*:2])OC(=O)C([H])([H])[*:1] 0.000 claims abstract description 5
- 125000004093 cyano group Chemical group *C#N 0.000 claims abstract description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims abstract description 5
- 125000003368 amide group Chemical group 0.000 claims abstract description 4
- 125000003277 amino group Chemical group 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 3
- XAHAOEIIQYSRHJ-UHFFFAOYSA-N benzene-1,2-diamine Chemical compound NC1=CC=CC=C1N.NC1=CC=CC=C1N XAHAOEIIQYSRHJ-UHFFFAOYSA-N 0.000 claims description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 2
- -1 nitro, methoxyl group Chemical group 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000012429 reaction media Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 38
- 239000000203 mixture Substances 0.000 description 28
- 239000007787 solid Substances 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 24
- 229910052757 nitrogen Inorganic materials 0.000 description 19
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 18
- 238000004817 gas chromatography Methods 0.000 description 15
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 12
- 238000010992 reflux Methods 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- PBWZKZYHONABLN-UHFFFAOYSA-N difluoroacetic acid Chemical compound OC(=O)C(F)F PBWZKZYHONABLN-UHFFFAOYSA-N 0.000 description 9
- 238000001914 filtration Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004293 19F NMR spectroscopy Methods 0.000 description 4
- VRVRGVPWCUEOGV-UHFFFAOYSA-N 2-aminothiophenol Chemical compound NC1=CC=CC=C1S VRVRGVPWCUEOGV-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- PURNIHSRWGYONZ-UHFFFAOYSA-N 2-(difluoromethyl)-1h-benzimidazole Chemical class C1=CC=C2NC(C(F)F)=NC2=C1 PURNIHSRWGYONZ-UHFFFAOYSA-N 0.000 description 2
- 101150041968 CDC13 gene Proteins 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- ZMIBIIAWFMCVFD-UHFFFAOYSA-N 2,2-difluoroacetamide Chemical compound NC(=O)C(F)F ZMIBIIAWFMCVFD-UHFFFAOYSA-N 0.000 description 1
- 241000713772 Human immunodeficiency virus 1 Species 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- GZKHDVAKKLTJPO-UHFFFAOYSA-N ethyl 2,2-difluoroacetate Chemical compound CCOC(=O)C(F)F GZKHDVAKKLTJPO-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- CSSYKHYGURSRAZ-UHFFFAOYSA-N methyl 2,2-difluoroacetate Chemical compound COC(=O)C(F)F CSSYKHYGURSRAZ-UHFFFAOYSA-N 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000012450 pharmaceutical intermediate Substances 0.000 description 1
- YSWLZODWSKQJNC-UHFFFAOYSA-N propan-2-yl 2,2-difluoroacetate Chemical compound CC(C)OC(=O)C(F)F YSWLZODWSKQJNC-UHFFFAOYSA-N 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/06—Benzimidazoles; Hydrogenated benzimidazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
- C07D235/10—Radicals substituted by halogen atoms or nitro radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/52—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
- C07D263/54—Benzoxazoles; Hydrogenated benzoxazoles
- C07D263/56—Benzoxazoles; Hydrogenated benzoxazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/62—Benzothiazoles
- C07D277/64—Benzothiazoles with only hydrocarbon or substituted hydrocarbon radicals attached in position 2
Definitions
- the invention relates to a process for production of DFMB (2-difluoromethyl- lH-benzimidazole) derivatives, particularly to a process for production of DFMB derivatives using DFAE (difluoroacetate ethyl) directly as solvent.
- DFMB 2,ifluoromethyl- lH-benzimidazole
- DFMB derivatives are raw materials for an important new class of drugs, notably pharmaceutical intermediate and as potential anti HIV-1 bioactive.
- WO2008032064 discloses a process for preparing DFMB (2-difluoromethyl-lH-benzimidazole) used as a starting material of pyrimidine derivatives or pharmaceutically acceptable salts thereof. It describes on page 99 of the description a process to produce DFMB in toluene with a yield of 77%, without the use of catalyst, at 87°C and 41 h.
- the objective of the invention is to provide a new process of preparing DFMB derivatives with a low cost and without the use of aromatic solvent.
- the present invention relates to a process for the production of a compound of formula (III) :
- - n 0, 1 , 2, 3 or 4;
- - X is NH, O or S
- each Ri group may be the same or different, and is independently selected from the group consisting of hydrogen, hydroxyl, alkoxy, alkyl, carbonyl, carboxyl, carboxylic acid ester groups, amido, cyano, halogenated aliphatic, nitro, or amino groups;
- R 2 group is selected from the group consisting of hydroxyl, CI, F, Br, amino or alkoxy.
- DFMB derivatives includes DFMB and its derivatives, as shown by formula (III).
- Reacting a compound of formula (I) with an excess amount of a compound of formula (II) means that molar ratio of (II)/ (I) is not less than 1 , preferably not less than 2. According to some preferred embodiments, the molar ratio a compound of formula (II) to compound of formula (I) is from 2 to 10. According to some preferred embodiments, the molar ratio of the compound of formula (II) to the compound of formula (I) is 2-5.
- each R ⁇ may independently be hydrogen, hydroxyl, (C]-C 5 )alkoxy, (Ci-C 5 )alkyl, carbonyl, carboxyl, carboxylic acid ester groups, amido, cyano, halogenated aliphatic groups, nitro, or amino.
- at least one Ri may independently be hydrogen, nitro, methoxyl group, or -COOEthyl.
- halogenated aliphatic group may be perhalogenated aliphatic group, such as -CF 3 or -CF 2 C1.
- the compound (I) is 1 ,2-phenylenediamine (orthophenylene diamine).
- R 2 may be hydroxyl, CI, F, Br, amino or (C C 5 ) alkoxy. In further preferred embodiment of the invention, R 2 is ethoxy.
- the compound (II) is difluoroacetate ethyl (DFAE) or difluoroacetic acid (DFA).
- the compound (III) is 2,2-difmoromethyl lH-benzimidazole (DFMB).
- DFMB is prepared from 1 ,2-phenylenediamine and excess DFAE (difluoroacetate ethyl, also functions as solvent) without catalyst based on following equation:
- DFMB is prepared from 1 ,2-phenylenediamine and excess DFA (difluoroacetic acid, also functions as solvent) without catalyst based on following equation:
- reaction medium comprising the excess compound of formula (II) is recycled at least partly and preferably wholly after the compound of formula (I) is fully reacted and the product of compound of formula(III) is removed.
- the reaction can be completed in a very short time period.
- DFAE is used as the compound of formula (II) and as the sole solvent in the reaction system
- DFMB can be prepared at 90°C in 2-4 hours.
- the process according to the present invention can be carried out in a one-pot process by cooling down the reaction system to make DFMB derivative product crystallize from the reaction system.
- DFMB derivatives can be made in a relatively simple and inexpensive way.
- the process does not need aromatic solvent which is not environmental friendly. More surprisingly, the process can be carried out without any additional solvent except the reactants.
- the process according to some embodiments of the invention, can surprisingly shorten the reaction period needed for completing the reaction to few hours, for example, 2 to 5 hours.
- the process does not need any catalyst but can still nearly achieve 100% conversion in short time period.
- pure DFMB derivatives can be crystallized from the reaction system by cooling down the reaction system.
- the DFMB derivatives product can be separated from the reaction system by simple filtration, washing and drying to obtain highly pure product with a high yield.
- the mother liquors containing the excess compound of formula (II), for example, DFAE can be recycled to a new batch process.
- a molar ratio of 2-5 of the compound of formula (II) to the compound of formula (I) is generally sufficient to complete the reaction in a short time period.
- the present invention provides a process which is very productive in terms of volume productivity (kgs product/m 3 /hrs) and generates little or even no effluents because no catalyst is added and no extra reagent/activator is needed.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12869026.0A EP2817294B1 (en) | 2012-02-20 | 2012-02-20 | Process for production of dfmb derivatives |
| JP2014556900A JP5963222B2 (ja) | 2012-02-20 | 2012-02-20 | Ｄｆｍｂ誘導体の製造方法 |
| IN7014DEN2014 IN2014DN07014A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 2012-02-20 | 2012-02-20 | |
| PCT/CN2012/071346 WO2013123634A1 (en) | 2012-02-20 | 2012-02-20 | Process for production of dfmb derivatives |
| CN201280070516.2A CN104487424A (zh) | 2012-02-20 | 2012-02-20 | 用于生产dfmb衍生物的方法 |
| US14/377,056 US9458119B2 (en) | 2012-02-20 | 2012-02-20 | Process for production of DFMB derivatives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/071346 WO2013123634A1 (en) | 2012-02-20 | 2012-02-20 | Process for production of dfmb derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013123634A1 true WO2013123634A1 (en) | 2013-08-29 |
Family
ID=49004911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2012/071346 WO2013123634A1 (en) | 2012-02-20 | 2012-02-20 | Process for production of dfmb derivatives |
Country Status (6)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI572228B (zh) * | 2015-03-05 | 2017-02-21 | 宏達國際電子股份有限公司 | 行動裝置與其功能執行方法 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890344A (en) * | 1973-05-25 | 1975-06-17 | Hoechst Ag | 2-Haloalkyl-haloalkylsulfonylbenzimidazoles |
| JPH1045735A (ja) * | 1996-05-24 | 1998-02-17 | Sankyo Co Ltd | ベンゾチアゾール及びベンゾオキサゾール誘導体の製法 |
| CN1760185A (zh) * | 2005-11-10 | 2006-04-19 | 上海大学 | 含氟硝基苯并咪唑的制备方法 |
| CN1760184A (zh) * | 2005-11-10 | 2006-04-19 | 上海大学 | 2－二氟甲基氨基苯并咪唑及其制备方法 |
| CN101012204A (zh) * | 2007-02-09 | 2007-08-08 | 上海大学 | 5－甲基－2－二氟甲基苯并噁唑及其合成方法 |
| CN101016276A (zh) * | 2007-02-09 | 2007-08-15 | 上海大学 | 5－硝基－2－二氟甲基苯并咪唑及其合成方法 |
| CN101016274A (zh) * | 2007-02-09 | 2007-08-15 | 上海大学 | 5－氯－2－二氟甲基苯并噁唑及其合成方法 |
| WO2008032064A1 (en) | 2006-09-14 | 2008-03-20 | Astrazeneca Ab | Pyrimidine derivatives |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122184A (en) * | 1973-09-14 | 1978-10-24 | Eli Lilly And Company | Benzimidazole insecticides |
| GB9518552D0 (en) | 1995-09-11 | 1995-11-08 | Fujisawa Pharmaceutical Co | New heterocyclic compounds |
| US20040224952A1 (en) | 2003-05-07 | 2004-11-11 | Cowart Marlon D. | Fused bicyclic-substituted amines as histamine-3 receptor ligands |
| US20070244110A1 (en) * | 2006-04-14 | 2007-10-18 | Zenyaku Kogyo Kabushiki Kaisha | Treatment of prostate cancer, melanoma or hepatic cancer |
| WO2008032077A1 (en) * | 2006-09-14 | 2008-03-20 | Astrazeneca Ab | Pyrimidine derivatives |
| US20120165309A1 (en) | 2009-02-12 | 2012-06-28 | Astellas Pharma Inc. | Hetero ring derivative |
| US8461158B2 (en) * | 2009-03-27 | 2013-06-11 | Pathway Therapeutics Inc. | Pyrimidinyl and 1,3,5-triazinyl benzimidazole sulfonamides and their use in cancer therapy |
| PL2471786T3 (pl) | 2009-08-07 | 2016-04-29 | Chugai Pharmaceutical Co Ltd | Pochodna aminopirazolu |
| ES2523503T3 (es) * | 2010-03-04 | 2014-11-26 | Bayer Intellectual Property Gmbh | 2-Amidobencimidazoles sustituidos con fluoroalquilo y su uso para el aumento de la tolerancia al estrés en plantas |
-
2012
- 2012-02-20 IN IN7014DEN2014 patent/IN2014DN07014A/en unknown
- 2012-02-20 US US14/377,056 patent/US9458119B2/en not_active Expired - Fee Related
- 2012-02-20 EP EP12869026.0A patent/EP2817294B1/en not_active Not-in-force
- 2012-02-20 JP JP2014556900A patent/JP5963222B2/ja not_active Expired - Fee Related
- 2012-02-20 CN CN201280070516.2A patent/CN104487424A/zh active Pending
- 2012-02-20 WO PCT/CN2012/071346 patent/WO2013123634A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890344A (en) * | 1973-05-25 | 1975-06-17 | Hoechst Ag | 2-Haloalkyl-haloalkylsulfonylbenzimidazoles |
| JPH1045735A (ja) * | 1996-05-24 | 1998-02-17 | Sankyo Co Ltd | ベンゾチアゾール及びベンゾオキサゾール誘導体の製法 |
| CN1760185A (zh) * | 2005-11-10 | 2006-04-19 | 上海大学 | 含氟硝基苯并咪唑的制备方法 |
| CN1760184A (zh) * | 2005-11-10 | 2006-04-19 | 上海大学 | 2－二氟甲基氨基苯并咪唑及其制备方法 |
| WO2008032064A1 (en) | 2006-09-14 | 2008-03-20 | Astrazeneca Ab | Pyrimidine derivatives |
| CN101012204A (zh) * | 2007-02-09 | 2007-08-08 | 上海大学 | 5－甲基－2－二氟甲基苯并噁唑及其合成方法 |
| CN101016276A (zh) * | 2007-02-09 | 2007-08-15 | 上海大学 | 5－硝基－2－二氟甲基苯并咪唑及其合成方法 |
| CN101016274A (zh) * | 2007-02-09 | 2007-08-15 | 上海大学 | 5－氯－2－二氟甲基苯并噁唑及其合成方法 |
Non-Patent Citations (2)
| Title |
|---|
| GE FENGLIAN ET AL.: "One-pot synthesis of 2-trifluoromethyl and 2-difluoromethyl substituted benzo-1,3-diazoles", TETRAHEDRON LETTERS, vol. 48, 7 March 2007 (2007-03-07), pages 3251 - 3254, XP022021577 * |
| See also references of EP2817294A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015506991A (ja) | 2015-03-05 |
| EP2817294B1 (en) | 2017-12-27 |
| IN2014DN07014A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 2015-04-10 |
| US9458119B2 (en) | 2016-10-04 |
| EP2817294A4 (en) | 2015-07-29 |
| JP5963222B2 (ja) | 2016-08-03 |
| CN104487424A (zh) | 2015-04-01 |
| US20150005505A1 (en) | 2015-01-01 |
| EP2817294A1 (en) | 2014-12-31 |
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