CN107522742B - A kind of homogeneous " one kettle way " preparation method of Brigatinib key intermediate - Google Patents

A kind of homogeneous " one kettle way " preparation method of Brigatinib key intermediate Download PDF

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CN107522742B
CN107522742B CN201710984185.8A CN201710984185A CN107522742B CN 107522742 B CN107522742 B CN 107522742B CN 201710984185 A CN201710984185 A CN 201710984185A CN 107522742 B CN107522742 B CN 107522742B
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preparation
iodoaniline
homogeneous
ethyl acetate
brigatinib
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CN107522742A (en
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周海平
邱岳进
包小波
刘巧云
倪迎港
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Changzhou Vocational Institute of Engineering
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    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/547Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/645Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having two nitrogen atoms as the only ring hetero atoms
    • C07F9/6509Six-membered rings
    • C07F9/6512Six-membered rings having the nitrogen atoms in positions 1 and 3

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Abstract

The invention belongs to technical field of medicine synthesis, and in particular to a kind of homogeneous " one kettle way " preparation method about Brigatinib key intermediate (II).The preparation method includes: that 2- Iodoaniline and dimethyl phosphine are carried out coupling reaction under catalyst, acid binding agent effect, and without isolation directly with 2,4,5- trichloropyrimidines carry out substitution reaction.Then through extraction, washing, drying, filter, be concentrated to get crude product, by being recrystallized to give (2- ((2,5- dichloro pyrimidine -4- base) amino) phenyl) dimethyl phosphine (II).The present invention replaces two-step reaction using homogeneous " one kettle way ", and centre does not need to isolate and purify, and shortens step and simplifies operation, yield is improved than the prior art;Column chromatographic purifying is replaced with recrystallization simultaneously, reduces solvent consumption and " three wastes " discharge, is suitble to industrialized production.

Description

A kind of homogeneous " one kettle way " preparation method of Brigatinib key intermediate
Technical field
The invention belongs to technical field of medicine synthesis, and in particular to one kind is about Brigatinib key intermediate (II) Homogeneously " one kettle way " preparation method.
Background technique
Brigatinib, trade name Alunbrig, the Ariad drugmaker by now belonging to military field pharmacy research and develop listing, FDA approval is obtained for the disease progression after gram azoles is for Buddhist nun (Crizotinib) treatment in April, 2017, or Buddhist nun is replaced not to gram azoles The Locally Advanced or Metastatic Nsclc for the anaplastic lymphoma kinase positive (ALK+) being resistant to.In addition, suitable grinding Answering disease further includes fibrosarcoma, diffusivity large B cell lymphoid tumor and primary cutaneous type etc..According to Thomson Reuters data statistics prediction, Brigatinib will obtain 45,330,000 dollars of sales volume in 2017, then year by year on It rises, is up to 4.78 hundred million dollars to annual sales amount in 2021, has good market prospects.
The chemical name of Brigatinib are as follows: the chloro- N2- of 5- [4- [(4- methylpiperazine-1-yl) piperidin-1-yl] -2- methoxyl group Phenyl]-N4- [2- (dimethyl Asia phosphono) phenyl] -2,4- pyrimidinediamine (I), structure formula (I) is as follows:
Patent WO2009143389 reports the structure and synthetic method of (I) for the first time, document (J.Med.Chem.2016, 59,4948-4964) and international monopoly US2015225436, WO201665028 etc. also report the synthetic method of (I).Current The synthetic method about (I) of report is as follows:
At present the synthetic method about key intermediate (II) be by 2- Iodoaniline and dimethyl phosphine palladium acetate/ Under Xantphos catalysis, with K3PO4For acid binding agent, coupling obtains (2- aminophenyl) dimethyl phosphine (IV), then with 2,4,5- Trichloropyrimidine reacts to obtain (2- ((2,5- dichloro pyrimidine -4- base) amino) phenyl) dimethyl phosphine (II).Synthetic route is such as Under:
There is apparent defect in the above-mentioned synthetic method about (II): the 1) synthesis of intermediate (IV) in the actual process Cheng Fanying not exclusively, low efficiency, need column chromatographic purifying.2) yield is not high, and two-step reaction total recovery is only 49.9% (J.Med.Chem.2016,59,4948-4964), and operating process is complicated, it is time-consuming and laborious, it is unfavorable for industrialized production.
From the foregoing, it will be observed that the prior art haves the defects that not high yield, low efficiency and cumbersome, it is to influence at present An important factor for Brigatinib intermediate (II) industrialized production.New preparation method is developed to improve the production of intermediate (II) Rate and combined coefficient are technical problems urgently to be solved.
Summary of the invention
In view of in existing method there are above-mentioned technical problem, the purpose of the present invention is develop it is a kind of it is easy to operate, high-efficient, Yield is good, stable product quality and the environmental-friendly preparation method about (II).
" one kettle way " preparation method the present invention provides one kind about Brigatinib key intermediate (II), the system Preparation Method includes:
2- Iodoaniline and dimethyl phosphine are subjected to coupling reaction under catalyst, acid binding agent effect, without isolation directly It connects and carries out substitution reaction with 2,4,5- trichloropyrimidine.Then through extraction, washing, drying, filter, be concentrated to get crude product, pass through weight Crystallization obtains (2- ((2,5- dichloro pyrimidine -4- base) amino) phenyl) dimethyl phosphine (II).
In preparation method of the present invention, 2- Iodoaniline: dimethyl phosphine: 2,4,5- trichloropyrimidines feed intake mole Than for 1:1.1:1.2.
Coupling reaction temperature is 80~120 DEG C, preferably 90~100 DEG C.
The catalyst of coupling reaction is selected from palladium acetate/Xantphos, tetrakis triphenylphosphine palladium, palladium acetate/triphenylphosphine, excellent It is selected as palladium acetate/Xantphos;Acid binding agent is selected from triethylamine, N, and N- diisopropylethylamine, triethylene diamine, 1,8- diaza are double 11 carbon -7- alkene of ring [5.4.0], 4-dimethylaminopyridine, pyridine, N-methylmorpholine, preferably n,N-diisopropylethylamine.2- Iodoaniline: the molar ratio of acid binding agent is 1:2~2.5, preferably 1:2.2.
In recrystallization method of the present invention, the mixed solvent that selection is made of ethyl acetate and petroleum ether, preferably two The volume ratio of person is ethyl acetate: petroleum ether=1:2.
Compared with prior art, key intermediate (II) preparation method of the present invention about Brigatinib has Beneficial effect includes the following aspects: 1) replacing two-step reaction using homogeneous " one kettle way ", centre does not need to isolate and purify, and contracts Short step simultaneously simplifies operation;2) than prior art raising, (yield of optimum condition is 67.2% to yield, is higher than document The 49.9% of J.Med.Chem.2016,59,4948-4964 report);3) column chromatographic purifying is replaced with recrystallization, reduces solvent Consumption and " three wastes " discharge.Therefore, preparation method of the present invention is easy to operate, efficiency and high income, environmental-friendly, is suitble to Industrialized production.
Preparation method of the invention needs that otherwise " one kettle way " can not be passed through using homogeneous reaction, i.e. liquid-liquid homogeneous systems Synthesis is to obtain above-mentioned beneficial effect.
Detailed description of the invention
Fig. 1 is product nucleus magnetic hydrogen spectrum figure in the embodiment of the present invention 1;
Specific embodiment
Embodiment 1
2- Iodoaniline (17.5g, 79.9mmol) and dimethyl phosphine (6.9g, 88.5mmol), palladium acetate is added (0.3g, 1.3mmol), Xantphos (0.77g, 1.3mmol), n,N-diisopropylethylamine (22.7g, 175.8mmol), DMF (50mL), magnetic agitation.It under nitrogen protection, is heated to 100 DEG C and reacts 6 hours, run out of through thin-layer chromatography monitoring 2- Iodoaniline Entirely.It is cooled to room temperature, is added 2,4,5- trichloropyrimidine (17.5g, 95.9mmol), be heated to 75 DEG C and react 6 hours, through thin layer color Spectrum monitoring fully reacting.It is cooled to room temperature, adds water 300mL, with 5% hydrochloric acid tune pH to 5, ethyl acetate extracts (100mL × 3), Sodium bicarbonate solution washs (100mL), and saturated sodium chloride solution washs (100mL × 2), and anhydrous sodium sulfate is dry.It filters, it is dense Contracting, obtains yellow-brown solid crude product, then be recrystallized to give near-white solid 17g with ethyl acetate/petroleum ether (volume ratio 1:2), Yield 67.3%.Nucleus magnetic hydrogen spectrum data (see Fig. 1) are1H NMR(300MHz,CDCl3) δ 11.56 (s, 1H), 8.66~8.70 (m, 1H), 8.23 (s, 1H), 7.57~7.64 (m, 1H), 7.26~7.34 (m, 1H), 7.16~7.22 (m, 1H), 1.85 (d, J= 15.0Hz,6H).Document (J.Med.Chem.2016,59,4948-4964) value is1H NMR(400MHz,DMSO-d6)δ11.82 (s, 1H), 8.45 (s, 1H), 8.42 (dd, J=4.14,8.28Hz, 1H), 7.47~7.81 (m, 2H), 7.24 (t, J= 7.22Hz, 1H), 1.80 (d, J=13.68Hz, 6H).Therefore, nucleus magnetic hydrogen spectrum data are consistent with document report.
Embodiment 2
2- Iodoaniline (8.6g, 39.3mmol) and dimethyl phosphine (3.4g, 43.6mmol), four (triphenylphosphines) are added Palladium (0.92g, 0.8mmol), n,N-diisopropylethylamine (11.2g, 86.7mmol), DMF (30mL), magnetic agitation.Nitrogen is protected Under shield, it is heated to 90 DEG C and reacts 8 hours, it is complete through thin-layer chromatography monitoring 2- Iodoaniline consumption.It is cooled to room temperature, is added 2,4,5- Trichloropyrimidine (8.6g, 47.0mmol) is heated to 75 DEG C and reacts 6 hours, monitors fully reacting through thin-layer chromatography.It is cooled to room Temperature adds water 200mL, and with 5% hydrochloric acid tune pH to 5, ethyl acetate extracts (70mL × 3), and sodium bicarbonate solution washs (100mL), Saturated sodium chloride solution washs (100mL × 2), and anhydrous sodium sulfate is dry.It filters, concentration obtains yellow-brown solid crude product, then use Ethyl acetate/petroleum ether (volume ratio 1:2) is recrystallized to give near-white solid 6.8g, yield 54.8%.
Embodiment 3
2- Iodoaniline (7.8g, 35.6mmol) and dimethyl phosphine (3.1g, 39.7mmol), palladium acetate is added (0.13g, 0.58mmol), Xantphos (0.33g, 0.57mmol), n,N-diisopropylethylamine (9.2g, 71.2mmol), DMF (30mL), magnetic agitation.It under nitrogen protection, is heated to 100 DEG C and reacts 6 hours, run out of through thin-layer chromatography monitoring 2- Iodoaniline Entirely.It is cooled to room temperature, is added 2,4,5- trichloropyrimidine (7.8g, 42.7mmol), be heated to 75 DEG C and react 6 hours, through thin layer color Spectrum monitoring fully reacting.It is cooled to room temperature, adds water 200mL, with 5%HCl tune pH to 5, ethyl acetate extracts (70mL × 3), carbon Sour hydrogen sodium solution washs (100mL), and saturated sodium chloride solution washs (100mL × 2), and anhydrous sodium sulfate is dry.It filters, concentration, Yellow-brown solid crude product is obtained, then is recrystallized to give near-white solid 6.6g with ethyl acetate/petroleum ether (volume ratio 1:2), is received Rate 58.8%.
Embodiment 4
2- Iodoaniline (7.8g, 35.6mmol) and dimethyl phosphine (3.1g, 39.7mmol), palladium acetate is added (0.13g, 0.58mmol), Xantphos (0.33g, 0.57mmol), n,N-diisopropylethylamine (11.5g, 89.0mmol), DMF (30mL), magnetic agitation.It under nitrogen protection, is heated to 100 DEG C and reacts 6 hours, through thin-layer chromatography monitoring 2- Iodoaniline consumption Completely.It is cooled to room temperature, is added 2,4,5- trichloropyrimidine (7.8g, 42.7mmol), be heated to 75 DEG C and react 6 hours, through thin layer Chromatogram monitoring fully reacting.It is cooled to room temperature, adds water 200mL, with 5%HCl tune pH to 5, ethyl acetate extracts (70mL × 3), Sodium bicarbonate solution washs (100mL), and saturated sodium chloride solution washs (100mL × 2), and anhydrous sodium sulfate is dry.It filters, it is dense Contracting, obtains yellow-brown solid crude product, then be recrystallized to give near-white solid 6.2g with ethyl acetate/petroleum ether (volume ratio 1:2), Yield 55.3%.
Embodiment 5
2- Iodoaniline (7.8g, 35.6mmol) and dimethyl phosphine (3.1g, 39.7mmol), palladium acetate is added (0.13g, 0.58mmol), Xantphos (0.33g, 0.57mmol), n,N-diisopropylethylamine (10.1g, 78.4mmol), DMF (30mL), magnetic agitation.It under nitrogen protection, is heated to 80 DEG C and reacts 16 hours, through thin-layer chromatography monitoring 2- Iodoaniline consumption Completely.It is cooled to room temperature, is added 2,4,5- trichloropyrimidine (7.8g, 42.7mmol), be heated to 75 DEG C and react 6 hours, through thin layer Chromatogram monitoring fully reacting.It is cooled to room temperature, adds water 200mL, with 5%HCl tune pH to 5, ethyl acetate extracts (70mL × 3), Sodium bicarbonate solution washs (100mL), and saturated sodium chloride solution washs (100mL × 2), and anhydrous sodium sulfate is dry.It filters, it is dense Contracting, obtains yellow-brown solid crude product, then be recrystallized to give near-white solid 6.4g with ethyl acetate/petroleum ether (volume ratio 1:2), Yield 56.8%.
Embodiment 6
2- Iodoaniline (7.8g, 35.6mmol) and dimethyl phosphine (3.1g, 39.7mmol), palladium acetate is added (0.13g, 0.58mmol), Xantphos (0.33g, 0.57mmol), n,N-diisopropylethylamine (10.1g, 78.4mmol), DMF (30mL), magnetic agitation.It under nitrogen protection, is heated to 120 DEG C and reacts 4 hours, through thin-layer chromatography monitoring 2- Iodoaniline consumption Completely.It is cooled to room temperature, is added 2,4,5- trichloropyrimidine (7.8g, 42.7mmol), be heated to 75 DEG C and react 6 hours, through thin layer Chromatogram monitoring fully reacting.It is cooled to room temperature, adds water 200mL, with 5%HCl tune pH to 5, ethyl acetate extracts (70mL × 3), Sodium bicarbonate solution washs (100mL), and saturated sodium chloride solution washs (100mL × 2), and anhydrous sodium sulfate is dry.It filters, it is dense Contracting, obtains yellow-brown solid crude product, then be recrystallized to give near-white solid 6.0g with ethyl acetate/petroleum ether (volume ratio 1:2), Yield 53.6%.

Claims (1)

1. a kind of homogeneous " one kettle way " preparation method about Brigatinib key intermediate, which is characterized in that will 79.9mmol2- Iodoaniline, 88.5mmol dimethyl phosphine, 1.3mmol palladium acetate, 1.3mmol Xantphos, 175.8mmol n,N-diisopropylethylamine is dissolved in 50mLDMF, and uses magnetic agitation;Under nitrogen protection, 100 DEG C are heated to instead It answers 6 hours, after thin-layer chromatography monitoring 2- Iodoaniline consumption completely, is cooled to room temperature;It is directly added into without isolation 95.9mmol2,4,5- trichloropyrimidines are heated to 75 DEG C and react 6 hours, after thin-layer chromatography monitors fully reacting, are cooled to room Temperature;300mL is added water, with 5% hydrochloric acid tune pH to 5, is extracted 3 times with 100mL ethyl acetate, is washed with 100mL sodium bicarbonate solution It washs, is washed 2 times with 100mL saturated sodium chloride solution, it is dry with anhydrous sodium sulfate, then filtered, it is concentrated, obtains yellow-brown solid Crude product, then carry out being recrystallized to give solid with the ethyl acetate/petroleum ether mixed liquor of ethyl acetate and the volume ratio 1:2 of petroleum ether Product.
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CN108129513A (en) * 2018-02-01 2018-06-08 安庆奇创药业有限公司 A kind of method for synthesizing Bouguer and replacing Buddhist nun's intermediate
CN110713497A (en) * 2019-10-30 2020-01-21 成都海杰亚医药科技有限公司 Preparation method of Brigatinib intermediate 2-aminophenyldimethylphosphine oxide

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CN103501612A (en) * 2011-05-04 2014-01-08 阿里亚德医药股份有限公司 Compounds for inhibiting cell proliferation in EGFR-driven cancers
CN105330698A (en) * 2014-07-04 2016-02-17 南京明德新药研发股份有限公司 Spiro aryl phosphorus oxide or sulfide
CN106928275A (en) * 2015-12-29 2017-07-07 齐鲁制药有限公司 The Preparation Method And Their Intermediate and crystal formation of volution amine aryl phosphoric-oxygenic compound

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103501612A (en) * 2011-05-04 2014-01-08 阿里亚德医药股份有限公司 Compounds for inhibiting cell proliferation in EGFR-driven cancers
CN105330698A (en) * 2014-07-04 2016-02-17 南京明德新药研发股份有限公司 Spiro aryl phosphorus oxide or sulfide
CN106928275A (en) * 2015-12-29 2017-07-07 齐鲁制药有限公司 The Preparation Method And Their Intermediate and crystal formation of volution amine aryl phosphoric-oxygenic compound

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