CN106946920A - A kind of preparation method of 4 amino phenyl boronic acid derivative - Google Patents

A kind of preparation method of 4 amino phenyl boronic acid derivative Download PDF

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Publication number
CN106946920A
CN106946920A CN201710218099.6A CN201710218099A CN106946920A CN 106946920 A CN106946920 A CN 106946920A CN 201710218099 A CN201710218099 A CN 201710218099A CN 106946920 A CN106946920 A CN 106946920A
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amino phenyl
boronic acid
preparation
acid derivative
phenyl boronic
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刘明星
龚华梦
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Azithromycin Pharmaceutical (hubei) Co Ltd
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Azithromycin Pharmaceutical (hubei) Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02Boron compounds
    • C07F5/025Boronic and borinic acid compounds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention belongs to pharmaceutical intermediate preparing technical field, and in particular to a kind of preparation method of 4 amino phenyl boronic acid derivative.Preparation method preparation method first is using 4 nitrobenzene boronic acids as raw material first; 4 amino phenyl boric acids are obtained by hydrogenating reduction; then acylation reaction; the 4 amino phenyl boronic acid derivatives such as 4 acetamidobenzeneboronic acids, 4 (N is to methyl benzoyl amino) phenyl boric acids are obtained, and product is analyzed and characterized.Advantage of the invention is that:The yield of 4 prepared amino phenyl boronic acid derivatives is high, and preparation technology is simple, and mild condition, energy consumption is low, low cost, is adapted to produce in enormous quantities, reliable experiment basis are provided for the research and development of downstream product.

Description

A kind of preparation method of 4- amino phenyl boronic acid derivative
Technical field
The invention belongs to pharmaceutical intermediate preparing technical field, and in particular to a kind of preparation of 4- amino phenyl boronic acid derivative Method.
Background technology
4- amino phenyl boronic acid derivative is played very as a kind of active intermediate in organic synthesis and field of medicaments Important effect, this be mainly based upon its good stability, it is cheap, with electrophilic group and environmentally friendly etc. many excellent Point, while it can be used for preparing the fluorescence chromophore molecule for possessing and adapting to physiological environment, the benzene such as anthracene class, naphthalenes, heterocyclic Boronic acid compounds, and its chromatography, mould detection and new PH sensors in be also widely used.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of preparation method of 4- amino phenyl boronic acid derivative.
The technical scheme that the present invention solves above-mentioned technical problem is as follows:A kind of preparation side of 4- amino phenyl boronic acid derivative Method, it comprises the following steps:4- nitrobenzene boronic acids generation hydrogenating reduction under atmosphere of hydrogen and palladium-carbon catalyst effect first is anti- 4- amino phenyl boric acids should be obtained, then 4- amino phenyl boric acid gives birth to acylation reaction with acylting agent hybrid concurrency in a solvent, Produce the 4- amino phenyl boronic acid derivative.
On the basis of above-mentioned technical proposal, the present invention can also do specifically chosen or optimum choice further below.
Specifically, 4- nitrobenzene boronic acid hydrogenation reductions are carried out in hydrogenation reaction kettle, by 4- nitrobenzene boronic acids and nothing Water-ethanol is according to 1mol:10-30mL amount ratio mixing, then adds the palladium of the 0.02-0.1 times of 4- nitrobenzene boronic acids weight Hydrogen Vapor Pressure is 0.2-1atm (1atm in C catalyst (effective ingredient metal palladium content is 0.5wt%), the hydrogenation reaction kettle Represent a standard atmospheric pressure), the reaction time of hydrogenation reduction is 1-6h.
Specifically, when the acylting agent is chloroacetic chloride, acetic anhydride or acetic acid, obtained 4- amino phenyl boronic acid derivatives For 4- acetamidobenzeneboronic acids, when the acylting agent is 4- methyl benzoyl chlorides, obtained 4- amino phenyl boronic acid derivatives For 4- (N- is to methyl benzoyl amino) phenyl boric acid..
Specifically, described solvent is tetrahydrofuran, chloroform, dichloroethanes, dichloromethane or the pyrroles of N- methyl -2 Alkanone.
It is preferred that, the mol ratio of 4- amino phenyl boric acid and acylting agent is 1:1-3, the reaction temperature of acylation reaction is 20-40 DEG C, the reaction time is 3-8h.
Compared with prior art, the beneficial effects of the invention are as follows:The method provided by the present invention prepares 4- aminobenzene boron The yield of acid derivative is high, cheap and easy to get using 4- nitrobenzene boronic acids as raw material, whole preparation process relatively simple and mild condition, Energy consumption is low, low cost, is adapted to produce in enormous quantities, reliable experiment basis are provided for the research and development of downstream product.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment, example is served only for explaining this hair It is bright, it is not intended to limit the scope of the present invention.
Medicine used is commercially available prod unless otherwise noted in following examples, and method therefor is unless otherwise noted Conventional method.
Embodiment 1
A kind of preparation method of 4- amino phenyl boronic acid derivative (4- acetamidobenzeneboronic acids), it comprises the following steps:
16.7g (0.1mol) 4- nitrobenzene boronic acids and 200mL absolute ethyl alcohols are added in hydrogenation reaction kettle, then added 1.67g palladium carbons (0.5%), with nitrogen displacement 5 times, are then heated to reflux, Hydrogen Vapor Pressure is 0.5atm, after reaction 3h, cooling, mistake Recycling design after filter, produces 135g white solid powder 4- amino phenyl boric acids, yield 98.7%, and fusing point is:62-66℃;1H- NMR (400MHz, CD3OD)δ(ppm):7.76-7.73 (m, 2H), 7.68-7.63 (m, 2H), 4.76 (br s, 2H), 1.33- 1.38(s,2H);FAB-MS(m/z):138[M+H]+
13.7g (0.1mol) 4- amino phenyl boric acid and 50mL tetrahydrofurans are added in there-necked flask, is sufficiently stirred for rear cold But to 10 DEG C, 11.7g (0.15mol) chloroacetic chloride is then added dropwise, drop finishes, the stirring reaction 5h at 25 DEG C adds 150mL water, stirred Mixing i.e. has solid wash-off, filtration drying, obtain 13g white or white solid powder 4- acetamidobenzeneboronic acids, yield 72.6%, Fusing point is:216-220℃;FT-IR (KBr compressing tablets, σ cm-1):3311,3048,1674,1610,1588;1H-NMR (400MHz, CD3OD)δ(ppm):7.77-7.74 (m, 2H), 7.65-7.67 (m, 2H), 4.77 (br s, 2H), 4.21-4.26 (s, 3H), 1.35-1.38(s,1H);FAB-MS(m/z):180[M+H]+
Embodiment 2
A kind of preparation method of 4- amino phenyl boronic acid derivative (4- acetamidobenzeneboronic acids), it comprises the following steps:
16.7g (0.1mol) 4- nitrobenzene boronic acids and 100mL absolute ethyl alcohols are added in hydrogenation reaction kettle, then added 0.334g palladium carbons (palladium content 0.5wt%), with nitrogen displacement 5 times, are then heated to reflux, Hydrogen Vapor Pressure is 0.2atm, react 6h Afterwards, cool down, recycling design after filtering produces 132g white solid powder 4- amino phenyl boric acids, yield 96.5%, and fusing point is:62- 66℃;1H-NMR (400MHz, CD3OD)δ(ppm):7.76-7.73 (m, 2H), 7.68-7.63 (m, 2H), 4.76 (br s, 2H), 1.33-1.38(s,2H);FAB-MS(m/z):138[M+H]+
13.7g (0.1mol) 4- amino phenyl boric acid and 100mL chloroforms are added in there-necked flask, is sufficiently stirred for rear cold But to 5 DEG C, 23.4g (0.3mol) chloroacetic chloride is then added dropwise, drop finishes, the stirring reaction 3h at 40 DEG C, adds 150mL water, stirring There is solid wash-off, filtration drying obtains 14g whites or white solid powder 4- acetamidobenzeneboronic acids, and yield 78.2% melts Put and be:216-220℃;FT-IR (KBr compressing tablets, σ cm-1):3311,3048,1674,1610,1588;1H-NMR (400MHz, CD3OD)δ(ppm):7.77-7.74 (m, 2H), 7.65-7.67 (m, 2H), 4.77 (br s, 2H), 4.21-4.26 (s, 3H), 1.35-1.38(s,1H);FAB-MS(m/z):180[M+H]+
Embodiment 3
A kind of preparation method of 4- amino phenyl boronic acid derivative [4- (N- is to methyl benzoyl amino) phenyl boric acid], it is wrapped Include following steps:
16.7g (0.1mol) 4- nitrobenzene boronic acids and 300mL absolute ethyl alcohols are added in hydrogenation reaction kettle, then added 0.835g palladium carbons (palladium content 0.5wt%), with nitrogen displacement 5 times, are then heated to reflux, Hydrogen Vapor Pressure is 1atm, after reaction 4h, Cooling, recycling design after filtering produces 129.7g white solid powder 4- amino phenyl boric acids, yield 94.8%, and fusing point is:62- 66℃;1H-NMR (400MHz, CD3OD)δ(ppm):7.76-7.73 (m, 2H), 7.68-7.63 (m, 2H), 4.76 (br s, 2H), 1.33-1.38(s,2H);FAB-MS(m/z):138[M+H]+
13.7g (0.1mol) 4- amino phenyl boric acid and the pyrrolidones of 80mL N- methyl -2 are added in there-necked flask (NMP) 10 DEG C are cooled to after, being sufficiently stirred for, 23.3g (0.15mol) 4- methyl benzoyl chlorides are then added dropwise, drop finishes, at 30 DEG C Stirring reaction 4h, adds 150mL water, and stirring has solid wash-off, and filtration drying obtains 193g whites or white solid powder 4- (N- is to methyl benzoyl amino) phenyl boric acid, yield 75.8%, FT-IR (KBr compressing tablets, σ cm-1):3310,3045,1659, 1605,1590;1H-NMR (400MHz, CD3OD)δ(ppm):7.92-7.85(m,2H),7.76-7.74(m,2H),7.68-7.61 (m, 2H), 7.61-7.46 (m, 2H), 4.74 (br s, 2H), 4.22-4.25 (s, 3H), 1.35-1.36 (s, 1H);;FAB-MS (m/z):278[M+Na]+
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modifications, equivalent substitutions and improvements made etc. should be included within the scope of the present invention.

Claims (5)

1. a kind of preparation method of 4- amino phenyl boronic acid derivative, it is characterised in that comprise the following steps:4- nitrobenzene boron first Acid occurs hydrogenation reduction under atmosphere of hydrogen and palladium-carbon catalyst effect and obtains 4- amino phenyl boric acids, then 4- aminobenzenes boron Acid gives birth to acylation reaction with acylting agent hybrid concurrency in a solvent, produces the 4- amino phenyl boronic acid derivative.
2. a kind of preparation method of 4- amino phenyl boronic acid derivative according to claim 1, it is characterised in that 4- nitrobenzene Boric acid hydrogenation reduction is carried out in hydrogenation reaction kettle, by 4- nitrobenzene boronic acids and absolute ethyl alcohol according to 0.1mol:100- 300mL amount ratio is added in the hydrogenation reaction kettle and mixed, and then adds the 0.02-0.1 times of 4- nitrobenzene boronic acids weight Hydrogen Vapor Pressure is 0.2-1atm in the palladium-carbon catalyst of amount, the hydrogenation reaction kettle, and the reaction time of hydrogenation reduction is 1- 6h。
3. a kind of preparation method of 4- amino phenyl boronic acid derivative according to claim 1, it is characterised in that the acyl group When change reagent is chloroacetic chloride, acetic anhydride or acetic acid, obtained 4- amino phenyl boronic acid derivative is 4- acetamidobenzeneboronic acids, described When acylting agent is 4- methyl benzoyl chlorides, obtained 4- amino phenyl boronic acid derivative is that (N- is to methyl benzoyl ammonia by 4- Base) phenyl boric acid.
4. a kind of preparation method for the 4- amino phenyl boronic acid derivative stated according to claim 1, it is characterised in that described solvent For tetrahydrofuran, chloroform, dichloroethanes, dichloromethane or the pyrrolidones of N- methyl -2.
5. a kind of preparation method of 4- amino phenyl boronic acid derivative according to any one of Claims 1-4, its feature exists In the mol ratio of 4- amino phenyl boric acid and acylting agent is 1:1-3, the reaction temperature of acylation reaction is 20-40 DEG C, reaction Time is 3-8h.
CN201710218099.6A 2017-04-05 2017-04-05 A kind of preparation method of 4 amino phenyl boronic acid derivative Pending CN106946920A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110330691A (en) * 2019-07-23 2019-10-15 华侨大学 A kind of alkyl system dynamic crosslinking agent and its application

Citations (2)

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Publication number Priority date Publication date Assignee Title
CN1293665A (en) * 1998-02-18 2001-05-02 神经研究公司 New compounds and their use as positive AMPA receptor modulators
CN103965170A (en) * 2013-01-24 2014-08-06 通化济达医药有限公司 Benzene sulfonamide pyrazole kinase inhibitor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1293665A (en) * 1998-02-18 2001-05-02 神经研究公司 New compounds and their use as positive AMPA receptor modulators
CN103965170A (en) * 2013-01-24 2014-08-06 通化济达医药有限公司 Benzene sulfonamide pyrazole kinase inhibitor

Non-Patent Citations (1)

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Title
WILLIAM ERB,ET AL.: ""Sequential One-Pot Access to Molecular Diversity through Aniline Aqueous Borylation"", 《J. ORG. CHEM.》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110330691A (en) * 2019-07-23 2019-10-15 华侨大学 A kind of alkyl system dynamic crosslinking agent and its application

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