CN104098476B - A kind of synthetic method of building the aminated compounds of unit as medicine structure - Google Patents

A kind of synthetic method of building the aminated compounds of unit as medicine structure Download PDF

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CN104098476B
CN104098476B CN201410378364.3A CN201410378364A CN104098476B CN 104098476 B CN104098476 B CN 104098476B CN 201410378364 A CN201410378364 A CN 201410378364A CN 104098476 B CN104098476 B CN 104098476B
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formula
synthetic method
nickel complex
reaction
compound
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CN104098476A (en
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庄伟萍
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Beijing Mai Kang Pharmaceutical Co ltd
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Gu Xiangmao
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Abstract

The present invention relates to a kind of synthetic method of aminated compounds, described method is using specific nickel complex as catalyzer, and uses Phosphine ligands, makes aminocompound and organic borate react in organic solvent, and obtains object product.The method has good products collection efficiency, and aftertreatment is simple, is a kind of brand-new synthetic method very with research and industrial value.

Description

A kind of synthetic method of building the aminated compounds of unit as medicine structure
Technical field
The present invention relates to a kind of synthetic method of nitrogenous compound, particularly a kind of synthetic method that can be used as the aminated compounds of medicine structure block unit, belongs to medicine intermediate synthesis field.
Background technology
Aminated compounds is a kind of very important compound, can be used to many active substances such as synthetic drugs, dyestuff, agricultural chemicals, liquid crystalline cpd, Photoactive compounds, has important function and position in organic chemical synthesis field.
Up to now, be developed the synthesis of multiple aminated compounds, such as nitroreduction becomes amino, thus obtain corresponding amine compound, and as more complicated aminated compounds, be developed cross-coupling reaction, thus obtain all kinds of aromatic amine compounds.
In addition, researcher also have developed the synthetic method using boric acid, and such as, under venus crystals exists, aminocompound can be obtained by reacting corresponding novel arylamine compound by aryl boric acid.
In the synthetic method of all use aryl boric acids, all need to use various Cu compounds as catalyzer, and use various catalyst aids etc., and for the catalyzer outside Cu, have little research, and reactions steps is long mostly, thus causes productive rate too low.
Therefore, how to obtain aminated compounds with a simpler process, this is for organic chemical synthesis worker, is still a very interested problem.
Summary of the invention
In order to overcome shortcoming existing in prior art, the present inventor finds to use nickel catalyzator, cycliborate and specific Phosphine ligands, thus corresponding aminated compounds can be obtained by aminocompound to organic borate one step, and the purity of product and yield are very high, thus complete the present invention.
The present invention relates to a kind of synthetic method of aminated compounds.
More specifically, the present invention relates to the synthetic method of aminated compounds shown in a kind of formula (I);
Described method is specially: using nickel complex as catalyzer, and under Phosphine ligands exists and in organic solvent, formula (II) compound and (III) compound react and obtain amine chemical combination shown in formula (I)
thing;
Wherein R is selected from H, halogen, C 1-C 4alkyl, C 1-C 4alkoxyl group, halo C 1-C 4alkyl or halo C 1-C 4alkoxyl group;
Ar is aryl, and described aryl can with 1-5 substituting group, and described substituting group is selected from halogen, C independently of one another 1-C 4alkyl, C 1-C 4alkoxyl group, halo C 1-C 4alkyl or halo C 1-C 4alkoxyl group;
R 1be selected from H, halogen or C 1-C 4alkyl;
X is basic metal, such as Li, Na or K, is preferably K.
In the present invention, C 1-C 4the implication of alkyl refers to the straight or branched alkyl with 1-4 carbon atom, that includes C 1alkyl, C 2alkyl, C 3alkyl or C 4alkyl, such as can be methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, sec-butyl, isobutyl-, the tertiary butyl etc. in non-limiting manner.
In the present invention, C 1-C 4alkoxyl group refers to " C defined above 1-C 4alkyl " be connected with O atom after group.
In the present invention, halo C 1-C 4the implication of alkyl refers to the " C defined above be optionally substituted by halogen 1-C 4alkyl ".
In the present invention, halo C 1-C 4the implication of alkoxyl group refers to the " C defined above be optionally substituted by halogen 1-C 4alkoxyl group ".
In the present invention, the implication of " halogen " refers to haloid element, non-exclusively such as can be F, Cl, Br or I.
In the present invention, in structural formula (III) with represent positive charge and negative charge respectively.
In the present invention, Ar is aryl, and described aryl can be C 6-12aryl, such as, can be phenyl or naphthyl; Described aryl can with 1-5 substituting group, such as can with 1,2,3,4 or 5 substituting groups.
In the present invention, described nickel complex has following structural formula:
In the present invention, described Phosphine ligands has following structural formula:
In the present invention, described organic solvent is selected from any one or multiple in dimethyl formamide (DMF), chloroform, ether, tetracol phenixin, tetrahydrofuran (THF) (THF), toluene, chlorobenzene, acetone, ethyl acetate etc., be preferably dimethyl formamide (DMF), chloroform, ether, tetracol phenixin, in tetrahydrofuran (THF) (THF) any one or multiple, most preferably be dimethyl formamide (DMF).
In the present invention, according to a mole meter, formula (II) and the 1:1-3 of (III) compound, be preferably 1:2.
In the present invention, according to a mole meter, the ratio of formula (II) compound and nickel complex as catalyst agent is 1:0.04-0.1, is preferably 1:0.06-0.08.
In the present invention, according to a mole meter, the ratio of described nickel complex as catalyst agent and Phosphine ligands is 1:2-3.
In the present invention, temperature of reaction is 70-110 DEG C, such as, can be 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C or 110 DEG C.
In the present invention, the reaction times is 8-14 hour, is generally 8-10 hour.
In the present invention, described reaction can be carried out under atmosphere of inert gases.
In the present invention, the aftertreatment after reaction terminates completes by chromatography over CC, and wherein elutriant is the mixture of ethyl acetate and acetone, and both volumes are 1:1-3, is preferably 1:2.
As mentioned above, the present invention using nickel complex as catalyzer, under specific Phosphine ligands exists, can one step obtains object product by aminocompound and organic cyclic boronate salt, be a kind of brand-new synthetic method, there is good scientific research value.
Embodiment
Below by specific embodiment, the present invention is described in detail; but the purposes of these exemplary embodiments and object are only used for exemplifying the present invention; not any type of any restriction is formed to real protection scope of the present invention, more non-protection scope of the present invention is confined to this.
It should be noted that in all embodiments below and comparative example, unless otherwise indicated, otherwise the catalyzer used and part are nickel complex and Phosphine ligands that above-mentioned " summary of the invention " part gives concrete structure formula.
Embodiment 1
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 1 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:1, formula (II) is 1:0.04, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:2; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 14 hours at 70 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:1, collect elutriant, reduction vaporization removing elutriant, obtains object solid product.
Embodiment 2
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 2 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:2, formula (II) is 1:0.07, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:3; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 10 hours at 90 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:2, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Embodiment 3
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 3 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:3, formula (II) is 1:0.1, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:2; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 8 hours at 110 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:3, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Embodiment 4
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 4 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:1.5, formula (II) is 1:0.1, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:2.5; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 9 hours at 100 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:1, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Embodiment 5
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 5 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:2.5, formula (II) is 1:0.05, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:3; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 11 hours at 90 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:2, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Embodiment 6
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 6 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:2, formula (II) is 1:0.08, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:2; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 12 hours at 100 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:3, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Embodiment 7
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 7 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:1, formula (II) is 1:0.1, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:3; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 14 hours at 80 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:1, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Embodiment 8
In reaction vessel, add appropriate but be enough to, for the organic solvent DMF needed for reaction, then add the formula (II) in table 1 corresponding to embodiment 8 and formula (III) compound, then add nickel complex and Phosphine ligands; The mol ratio that the mol ratio of its Chinese style (II) and formula (III) compound is 1:3, formula (II) is 1:0.04, nickel complex and Phosphine ligands with the mol ratio of nickel complex is 1:2; Nitrogen purging is thorough, then continues nitrogen and fills, replaces 2-3 time, be divided into, heat and react 14 hours at 70 DEG C until be entirely nitrogen in reaction vessel.After reaction reaches the time, filtered while hot, then Rotary Evaporators is used to remove reaction solvent from filtrate, gained residue silica gel column chromatography is separated, ethyl acetate and the acetone mixed solvent of elutriant to be volume ratio be 1:2, collect elutriant, reduction vaporization removing elutriant, obtains object product.
Table 1. differential responses thing and product and productive rate
The nuclear magnetic resonance data of above-described embodiment products therefrom is as follows respectively:
Embodiment 1: 1h NMR (CDCl 3, 500 MHz): δ 7.19-7.23 (m, 4H), 7.01-7.03 (m, 4H), 6.91 (m, 2H), 5.63 (s, 1H); 13c NMR (CDCl 3, 125MHz) and δ 142.1 (2C), 128.1 (4C), 121.2 (4C), 116.3 (2C).
Embodiment 2: 1h NMR (CDCl 3, 500 MHz): δ 7.27-7.21 (m, 2H), 7.19 (t, J=7.9 Hz, 1H), 7.11 (d, 2H), 6.94-6.84 (m, 3H), 6.74 (d, 1H), 5.71 (s, 1H), 2.34 (s, 3H); 13c NMR (CDCl 3, 125 MHz) and δ 143.6,143.3,139.5,129.1 (2C), 129.0,121.2,120.5 (2C), 118.1,117.2,114.2,22.3.
Embodiment 3: 1h NMR (CDCl 3, 500 MHz): δ 7.17-7.22 (m, 2H), 7.01-6.96 (m, 2H), 6.94-6.88 (m, 4H), 6.82-6.75 (m, 1H), 5.50 (s, 1H); 13c NMR (CDCl 3, 125 MHz) and δ 158.4,143.4,138.7,129.8 (2C), 121.2 (2C), 119.2 (2C), 116.2,115.1 (2C).
Embodiment 4: 1h NMR (CDCl 3, 500 MHz): δ 7.23-7.18 (m, 2H), 7.12 (t, 1H), 7.01 (d, 2H), 6.91-6.83 (m, 3H), 6.70 (d, 1H), 5.71 (s, 1H), 2.35 (s, 3H); 13c NMR (CDCl 3, 125 MHz) and δ 143.5,143.3,138.9,129.1 (2C), 128.3,121.5,120.1 (2C), 118.7,118.2,115.3,22.8.
Embodiment 5: 1h NMR (CDCl 3, 500 MHz): δ 7.20-7.24 (m, 2H), 7.11-7.16 (m, 2H), 7.01-7.09 (m, 2H), 6.93-6.82 (m, 3H), 5.51 (s, 1H); 13c NMR (CDCl 3, 125 MHz) and δ 143.7,142.2,129.6 (2C), 129.1 (2C), 125.1,120.7 (2C), 118.2 (2C), 117.5.
Embodiment 6: 1h NMR (CDCl 3, 500 MHz): δ 7.11-7.02 (m, 3H), 6.82-6.89 (m, 2H), 6.42-6.36 (m, 2H), 6.31-6.37 (m, 1H), 5.49 (s, 1H), 3.71 (s, 3H), 3.69 (s, 3H); 13c NMR (CDCl 3, 125 MHz) and δ 161.5,155.1,145.2,136.1,131.2,121.6 (2C), 114.2 (2C), 107.7,104.2,102.1,56.1,54.6.
Embodiment 7: 1h NMR (CDCl 3, 500 MHz): δ 7.01-7.09 (m, 2H), 6.81-6.92 (m, 6H), 5.45 (s, 1H), 3.90 (s, 3H); 13c NMR (CDCl 3, 125MHz) and δ 155.4 (d, 1C), 153.7,141.2136.7,120.5 (2C), 118.2 (2C), 114.9 (d, 2C), 114.3 (2C), 54.6.
Embodiment 8: 1h NMR (CDCl 3, 500 MHz): δ 7.22-7.16 (m, 2H), 7.10 (t, 1H), 7.01 (d, 2H), 6.91-6.82 (m, 3H), 6.76 (d, 1H), 5.74 (s, 1H), 2.34 (s, 3H); 13c NMR (CDCl 3, 125 MHz) and δ 142.6,142.4,138.8,128.9 (2C), 128.1,122.3,121.2 (2C), 118.7,117.3,114.1,22.4.
Embodiment 9-16
Except nickel complex as catalyst agent is wherein replaced with except following organo-nickel compounds, implement embodiment 9-16 respectively in the mode identical with embodiment 1-8, use the yield of organo-nickel compounds, embodiment corresponding relation and corresponding product as shown in table 2 below.
Table 2. organo-nickel compounds and corresponding relation and products collection efficiency
Can be found out by upper table 2, when using other nickel compound as catalyzer, products collection efficiency sharply reduces, and even cannot react.
Embodiment 17-24
Replace with respectively except following phosphine compound except by Phosphine ligands wherein, implement embodiment 17-24 respectively in the mode identical with embodiment 1-8, use the yield of Phosphine ligands, embodiment corresponding relation and corresponding product as shown in table 3 below.
Table 3. Phosphine ligands, corresponding embodiment and products collection efficiency
Wherein, the structural formula of all Phosphine ligands L1-L8 is shown in as follows.As can be seen from the above table, when using other Phosphine ligands, productive rate all will be caused sharply to reduce, lost the meaning of research, and demonstrating described Phosphine ligands of the present invention thus, for present method, there is specific catalyzing cooperation effect.
Embodiment 25-32
Replace with respectively except following organic solvent except by organic solvent DMF wherein, implement embodiment 25-32 respectively in the mode identical with embodiment 1-8, with an organic solvent, the yield of embodiment corresponding relation and corresponding product is as shown in table 3 below.
Table 4. organic solvent, corresponding embodiment and products collection efficiency
As can be seen here, the selection of organic solvent also has a certain impact for reaction, wherein use productive rate when chloroform, ether, tetracol phenixin, tetrahydrofuran (THF) (THF) higher, but still have relative to DMF and significantly reduce, the phase product yield of toluene, chlorobenzene, acetone, ethyl acetate is then lower.
In sum, can clearly be found out by above-mentioned all embodiments, when applying the method according to the invention, when especially using described nickel complex as catalyzer and described Phosphine ligands, and select suitable organic solvent, object product can be obtained by aminocompound and organic borate single step reaction, and there is very high productive rate.
Should be appreciated that the purposes of these embodiments is only not intended to for illustration of the present invention limit the scope of the invention.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various change, amendment and/or modification to the present invention, and these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.

Claims (8)

1. the synthetic method of aminated compounds shown in a formula (I), described method is specially: using nickel complex as catalyzer, under Phosphine ligands exists and in organic solvent, formula (II) compound and (III) compound react and obtain aminated compounds shown in formula (I);
Wherein R is selected from H, halogen, C 1-C 4alkyl or C 1-C 4alkoxyl group;
Ar is aryl, and described aryl can with 1-5 substituting group, and described substituting group is selected from halogen, C independently of one another 1-C 4alkyl or C 1-C 4alkoxyl group;
R 1be selected from H, halogen or C 1-C 4alkyl;
X is Li, Na or K;
Described nickel complex has following structural formula:
Described Phosphine ligands has following structural formula:
2. synthetic method as claimed in claim 1, is characterized in that: according to a mole meter, formula (II) is 1:1-3 with the ratio of (III) compound.
3. synthetic method as claimed in claim 1, is characterized in that: according to a mole meter, the ratio of formula (II) compound and nickel complex as catalyst agent is 1:0.04-0.1.
4. synthetic method as claimed in claim 1, is characterized in that: according to a mole meter, the ratio of described nickel complex as catalyst agent and Phosphine ligands is 1:2-3.
5. the synthetic method as described in claim 1, is characterized in that: temperature of reaction is 70-110 DEG C; Reaction times is 8-14 hour.
6. synthetic method as claimed in claim 1, is characterized in that: described reaction is carried out under atmosphere of inert gases.
7. synthetic method as claimed in claim 1, is characterized in that: the aftertreatment that reaction terminates is completed by chromatography over CC, and wherein elutriant is the mixture of ethyl acetate and acetone, and both volumes are 1:1-3.
8. the synthetic method as described in any one of claim 1-7, is characterized in that: described organic solvent is dimethyl formamide.
CN201410378364.3A 2014-08-04 2014-08-04 A kind of synthetic method of building the aminated compounds of unit as medicine structure Expired - Fee Related CN104098476B (en)

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