CN114773161A - (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-alcohol derivative and synthetic method thereof - Google Patents

(4E) -1-fluoro-2, 5-diaryl-4-pentene-2-alcohol derivative and synthetic method thereof Download PDF

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CN114773161A
CN114773161A CN202210224104.5A CN202210224104A CN114773161A CN 114773161 A CN114773161 A CN 114773161A CN 202210224104 A CN202210224104 A CN 202210224104A CN 114773161 A CN114773161 A CN 114773161A
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penten
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ethyl acetate
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江焕峰
朱佰尧
陈福林
伍婉卿
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South China University of Technology SCUT
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Abstract

The invention belongs to the technical field of preparation of fluorine-containing compounds, and discloses a (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-alcohol derivative and a synthesis method thereof. The (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative is shown in a formula I. The method comprises the following steps: taking an organic solvent as a reaction medium, and reacting the 1-fluoro-2-aryl-4-pentene-2-ol derivative with arylboronic acid under the action of a catalyst and oxygen to obtain (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives. The method has high efficiency and simple and mild conditions, does not need to add ligand and alkali, and can obtain a target product only by catalysis of catalyst/oxygen; the reaction has high adaptability to functional groups, wide adaptability to substrates and high product yield, can be produced and synthesized on a gram-scale, and the obtained product has wide application in the fields of pesticides, medicines and materials.

Description

(4E) -1-fluoro-2, 5-diaryl-4-pentene-2-alcohol derivative and synthetic method thereof
Technical Field
The invention belongs to the field of fluorine-containing compounds, and particularly relates to a (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-alcohol derivative and a synthesis method thereof.
Background
Fluorine has large electronegativity and small radius, and the introduction of fluorine atoms or fluorine-containing groups into organic molecules can effectively change the physicochemical properties of the organic molecules, so that the fluorine-containing compounds have very wide application in the fields of biological medicine, pesticide, material science and the like. It was investigated that the fluorine-containing compounds in all agricultural chemicals accounted for about 30% and the fluorine-containing compounds in the pharmaceuticals accounted for about 20%. Fluorinated materials have been widely used in liquid crystal displays. In addition, fluorine-labeled molecular probes can also be used for the diagnosis of diseases. Therefore, in order to satisfy the urgent needs of research and search for fluorine-containing compounds and the increasing kinds and amounts of fluorine-containing compounds, efficient synthesis of fluorine-containing compounds is one of the problems that chemists have urgently needed to solve.
The cross-coupling reaction among molecules is one of the important methods for constructing C-C bond, and the Heck reaction for obtaining the chemical prize of Nobel in 2010 is the construction of C (sp)2)-C(sp2) A key. However, this method is generally limited to activated electron deficient olefins, but coupling reactions are difficult to occur with unactivated olefins. Therefore, developing a method for efficiently reacting an unactivated olefin with an aryl group is still a challenging research topic.
Disclosure of Invention
In view of the above disadvantages and shortcomings of the prior art, the present invention is primarily directed to a method for efficiently synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives.
Another objective of the invention is to provide a method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative.
The purpose of the invention is realized by the following technical scheme.
A (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative having the structure:
Figure BDA0003534990000000011
wherein Ar is1Is phenyl, p-methylphenyl, o-methylphenyl, p-methoxyphenyl, o-methoxyphenyl, 3, 4-dimethoxyphenyl, p-fluorophenyl, o-fluorophenyl, p-chlorophenyl, o-chlorophenyl, 3, 5-dichlorophenyl, p-bromophenyl, o-bromophenyl or p-trifluoromethylphenyl.
Ar2Is phenyl, p-tolyl, o-tolyl, p-methoxyphenyl, o-methoxyphenyl, p-thiomethylphenyl (p-methylthiophenyl), p-tert-butylphenyl, p-fluorophenyl, m-fluorophenyl, p-chlorophenyl, p-bromophenyl, o-bromophenyl, 3, 5-dimethylphenyl, p-methylsulfonylphenyl, p-phenylphenyl or 2-naphthyl.
R1Is hydrogen, methyl or ethyl.
R2Is hydrogen or fluorine.
R3Is hydrogen, methyl or ethyl
R4Is hydrogen or methyl.
The synthesis method of the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative comprises the following steps:
taking an organic solvent as a reaction medium, reacting the 1-fluoro-2-aryl-4-pentene-2-alcohol derivative with arylboronic acid under the action of a catalyst and oxygen, and separating and purifying a product after the reaction is finished to obtain the (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-alcohol derivative.
The 1-fluoro-2-aryl-4-penten-2-ol derivative is
Figure BDA0003534990000000021
Wherein Ar is1Is phenyl, p-methylphenyl, o-methylphenyl, p-methoxyphenyl, o-methoxyphenyl, 3, 4-dimethoxyphenyl, p-fluorophenyl, o-fluorophenyl, p-chlorophenyl, o-chlorophenyl, 3, 5-dichlorophenyl, p-bromophenyl, o-bromophenyl or p-trifluoromethylphenyl.
The aryl boric acid is Ar2B(OH)2Wherein Ar is2Is phenyl, p-tolyl, o-tolyl, p-methoxyphenyl, o-methoxyphenyl, p-thiomethylphenyl (p-methylthiophenyl), p-tert-butylphenyl, p-fluorophenyl, m-fluorophenyl, p-chlorophenyl, p-bromophenyl, o-bromophenyl, 3, 5-dimethylphenyl, p-methylsulfonylphenyl, p-phenylphenyl or 2-naphthyl.
R1Is hydrogen, methyl or ethyl.
R2Is hydrogen or fluorine.
R3Is hydrogen, methyl or ethyl.
R4Is hydrogen or methyl.
The molar ratio of the 1-fluoro-2-aryl-4-penten-2-ol derivative to the arylboronic acid is 1:1 to 1:4, preferably 1: (2-4), more preferably 1 (2.5-3.5), still more preferably 1: 3.
the catalyst is one or more of palladium acetate, palladium iodide and tetrakis (triphenylphosphine) palladium, and is further preferably tetrakis (triphenylphosphine) palladium.
The molar ratio of the catalyst to the 1-fluoro-2-aryl-4-penten-2-ol derivative is 1: (5-100), preferably 1: 20.
The organic solvent is more than one of N, N-dimethylformamide, dimethyl sulfoxide, toluene, nitromethane and tetrahydrofuran, and is preferably a mixed solvent of N, N-dimethylformamide and dimethyl sulfoxide;
the volume ratio of the N, N-dimethylformamide to the dimethyl sulfoxide is 1: 1.
The reaction is carried out in oxygen atmosphere, the reaction temperature is 40-110 ℃, and the reaction time is 3-16 h. Preferably, the reaction temperature is 70-100 ℃, further preferably 80-95 ℃, and the reaction time is 10-16 h.
The subsequent treatment is that after the reaction is finished, the reaction solution is cooled to room temperature, the salt solution or water and the organic solvent are added to extract the reaction solution, the organic layer is decompressed and rotary evaporated to remove the solvent, a crude product is obtained, and the (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-ol derivative is obtained through column chromatography purification.
In the subsequent treatment, the organic solvent is ethyl acetate or dichloromethane.
The column chromatography purification refers to the purification by using petroleum ether: and the mixed solvent of ethyl acetate is eluent for column chromatography purification. Petroleum ether: volume ratio of ethyl acetate: (20-500): 1.
The reaction equation involved in the method of the invention:
Figure BDA0003534990000000031
compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the synthesis method is efficient, and the used raw materials are easy to obtain; the reaction has good adaptability to functional groups, wide adaptability to substrates and high product yield;
(2) the synthesis method is efficient, simple and mild in conditions, and can obtain a target product only by catalysis of catalyst/oxygen without adding ligand and alkali;
(3) the synthesis method can be used for scale-up to gram-scale production, is simple and safe to operate, has mild reaction conditions, and has good industrial application prospect;
(4) the product obtained by the invention has wide application in the fields of pesticide, medicine and material.
Drawings
FIG. 1 shows the products obtained in examples 1 to 151H NMR spectrum;
FIG. 2 shows the products obtained in examples 1 to 1513C NMR spectrum;
FIG. 3 shows the results of examples 1 to 1519F, NMR spectrum;
FIG. 4 is a single crystal structural diagram of the product obtained in example 25.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example 1:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a reaction vessel, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were charged, an oxygen balloon was fitted over the reaction vessel (oxygen was introduced), and the reaction system was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding salt solution and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a volume ratio of 100: 1: ethyl acetate mixture; the product yield was 95%.
Example 2:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-pentene-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of palladium acetate and 2 ml of N, N-dimethylformamide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at 90 ℃. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate, extracting the reaction solution, performing reduced pressure rotary evaporation on the ethyl acetate, removing the solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 46%.
Example 3:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide were added, an oxygen balloon was put on the graduated tube, and the reaction system was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate, extracting the reaction solution, performing reduced pressure rotary evaporation on the ethyl acetate, removing the solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of the column chromatography eluent is petroleum ether with the volume ratio of 100: 1: ethyl acetate mixture; the product yield was 77%.
Example 4:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of palladium iodide, and 2 ml of N, N-dimethylformamide were added, and an oxygen balloon was fitted over the graduated tube, and the reaction system was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 23%.
Example 5:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of dimethyl sulfoxide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at the temperature of 90 ℃. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 79%.
Example 6:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of toluene were added, an oxygen balloon was fitted over the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 51%.
Example 7:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of nitromethane are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacted for 12 hours at 90 ℃. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 50%.
Example 8:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at the temperature of 110 ℃. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 56%.
Example 9:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide were added, an oxygen balloon was put on the graduated tube, and the reaction system was stirred at 70 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 74%.
Example 10:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at the temperature of 50 ℃. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 33%.
Example 11:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.3 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at 70 ℃. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 15%.
Example 12:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at 70 ℃. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 66%.
Example 13:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.8 mmol of phenylboronic acid, 0.02 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide were added, an oxygen balloon was put on the graduated tube, and the reaction system was stirred at 70 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 64%.
Example 14:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide were added, an oxygen balloon was put on the graduated tube, and the reaction system was stirred at 70 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 89%.
Example 15:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.4 mmol of phenylboronic acid, 0.04 mmol of tetrakis (triphenylphosphine) palladium and 2 ml of N, N-dimethylformamide are added into a spiral graduated tube provided with magnetons, an oxygen balloon is sleeved on the graduated tube, and the reaction system is stirred and reacts for 12 hours at 70 ℃. Stopping heating and stirring, cooling to room temperature, adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 54%.
Examples 1 to 15 of the obtained products1H NMR,13C NMR,19The F NMR patterns are respectively shown in FIG. 1, FIG. 2 and FIG. 3, and the structural characterization data are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.62(d,J=8.0,2H),7.43-7.31(m,3H),7.28-7.15(m,5H),6.72(s,1H),6.50(d,J=16.0Hz,1H),5.96(dt,J=16.0,8.0Hz,1H),3.07(ddd,J=80.0,12.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 137.8,137.3,133.9,129.0,128.5,128.4,127.7,127.4,126.4(q,JC-F=262.6Hz),126.2,123.5,75.9(q,JC-F=26.3Hz),38.1.
19F NMR(376MHz,DMSO-d6)δppm-78.23.
the structures of the products obtained in examples 1 to 15 were deduced from the above data:
Figure BDA0003534990000000081
example 16:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-methylbenzeneboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was put on the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, adding salt solution and ethyl acetate to extract a reaction solution, carrying out reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and carrying out column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a ratio of 100: 1: ethyl acetate mixture; the product yield was 94%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.60(d,J=8.0Hz,2H),7.41-7.30(m,3H),7.10-7.04(m,4H),6.68(s,1H),6.43(d,J=16.0Hz,1H),5.88(dt,J=16.0,8.0Hz,1H),3.04(ddd,J=80.0,16.0,8.0Hz,2H),2.22(s,3H).
13C NMR(101MHz,DMSO-d6)δppm 137.3,136.5,134.1,133.3,129.1,128.0,127.9,126.9,125.9(q,JC-F=288.9Hz)125.7,121.9,76.0(q,JC-F=27.3Hz),37.7,20.7.
19F NMR(376MHz,DMSO-d6)δppm-78.23.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000091
example 17:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of o-tolylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction system was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 90%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.62(d,J=8.0Hz,2H),7.42-7.31(m,3H),7.14-7.04(m,4H),6.71(s,1H),6.65(d,J=16.0Hz,1H),5.78(dt,J=16.0,8.0Hz,1H),3.08(ddd,J=84.0,16.0,8.0Hz,2H),2.13(s,3H).
13C NMR(101MHz,DMSO-d6)δppm 137.3,136.1,134.5,131.8,123.0,128.0,127.9,127.1,127.0,126.0(q,JC-F=288.9Hz),126.0,125.1,124.3,76.0(q,JC-F=27.3Hz),37.9,19.2.
19F NMR(376MHz,DMSO-d6)δppm-78.27.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000101
example 18:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-methoxyphenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 95%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.60(d,J=8.0Hz,2H),7.42-7.30(m,3H),7.13(d,J=8.0Hz,2H),6.81(d,J=8.0Hz,2H),6.66(s,1H),6.41(d,J=16.0Hz,1H),5.78(dt,J=16.0,8.0Hz,1H),3.70(s,3H),3.03(ddd,J=80.0,12.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 159.1,137.9,133.4,130.0,128.5,128.4,127.4,127.4,126.4(q,JC-F=288.9Hz),121.0,114.4,76.4(q,JC-F=27.3Hz),55.5,38.2.
19F NMR(376MHz,DMSO-d6)δppm-78.20.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000102
example 19:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of o-methoxyphenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 93%.
The structural characterization data of the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.61(d,J=8.0Hz,2H),7.41-7.31(m,3H),7.18-7.13(m,2H),6.92(d,J=8.0Hz,1H),6.82(t,J=8.0Hz,1H),6.70(d,J=16.0Hz,1H),6.68(s,1H)5.91(dt,J=16.0,8.0Hz,1H),3.72(s,3H),3.06(ddd,J=80.0,12.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 155.9,137.4,128.4,128.0,127.9,126.9,126.0(q,JC-F=287.9Hz),125.9,125.5,123.4,120.5,111.3,76.0(q,JC-F=26.3Hz),55.3,38.1.
19F NMR(376MHz,DMSO-d6)δppm-78.14.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000111
example 20:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-thiomethylphenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 56%.
The structural characterization data of the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.59(d,J=7.6Hz,2H),7.41-7.31(m,3H),7.14(s,4H),6.69(s,1H),6.43(d,J=16.0Hz,1H),5.90(dt,J=16.0,8.0Hz,1H),3.04(ddd,J=80.0,16.0,8.0Hz,2H),2.42(s,3H).
13C NMR(101MHz,DMSO-d6)δppm 137.8,137.5,134.1,133.3,128.5,128.4,127.4,126.8,126.6,126.4(q,JC-F=287.9Hz),76.4(q,JC-F=26.3Hz),38.2,15.2.
19F NMR(376MHz,DMSO-d6)δppm-78.21.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000121
example 21:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-tert-butylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was put on the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 94%.
The structural characterization data of the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.60(d,J=8.0Hz,2H),7.40-7.24(m,6H),7.12(d,J=8.4Hz,2H),6.69(s,1H),6.44(d,J=16.0Hz,1H),5.90(dt,J=16.0,8.0Hz,1H),3.05(ddd,J=76.0,16.0,8.0Hz,2H),1.22(s,9H).
13C NMR(101MHz,DMSO-d6)δppm 150.2,137.8,134.6,133.7,128.5,128.4,127.4,126.3(q,JC-F=287.9Hz),126.0,125.7,122.6,76.4(q,JC-F=27.3Hz),38.2,34.6,31.5.
19F NMR(376MHz,DMSO-d6)δppm-78.22.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000131
example 22:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-chlorobenzeneboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction system was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 80%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.60(d,J=8.0Hz,2H),7.41-7.28(m,5H),7.21(d,J=8.0Hz,2H),6.72(s,1H),6.48(d,J=16.0Hz,1H),5.96(dt,J=16.0,8.0Hz,1H),3.06(ddd,J=84.0,16.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 137.7,136.2,132.7,132.1,129.0,128.6,128.5,127.9,127.4,126.4(q,JC-F=287.9Hz),124.6,76.5(q,JC-F=26.3Hz),38.1.
19F NMR(376MHz,DMSO-d6)δppm-78.25.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000132
example 23:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-bromophenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 86%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,Chloroform-d)δppm 7.59(d,J=8.0Hz,2H),7.45-7.30(m,5H),7.18-7.13(m,2H),6.72(s,1H),6.46(d,J=16.0Hz,1H),5.97(dt,J=16.0,8.0Hz,1H),3.05(ddd,J=84.0,16.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 136.4,135.2,131.5,130.6,127.3,127.2,127.0,126.4(q,JC-F=295.9Hz),126.1,123.4,119.3,75.1(q,JC-F=27.3Hz),36.9.
19F NMR(376MHz,DMSO-d6)δppm-78.27.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000141
example 24:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral scale tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of 3, 5-dimethylbenzeneboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the scale tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 91%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.60(d,J=8.0Hz,2H),7.41-7.30(m,3H),6.80(s,3H),6.69(s,1H),6.40(d,J=16.0Hz,1H),5.93(dt,J=16.0,8.0Hz,1H),3.05(ddd,J=80.0,12.0,8.0Hz,2H),2.18(s,6H).
13C NMR(101MHz,DMSO-d6)δppm 137.9,137.8,137.2,134.1,129.2,128.5,128.4,127.4,126.4(q,JC-F=287.9Hz),124.1,123.0,76.4(q,JC-F=27.3Hz),38.2,21.3.
19F NMR(376MHz,DMSO-d6)δppm-78.28.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000151
example 25:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral graduated tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2-phenyl-4-penten-2-ol, 0.6 mmol of p-phenylphenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the graduated tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding salt solution and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a volume ratio of 100: 1: ethyl acetate mixture; the product yield was 91%.
The structural characterization data of the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.61(d,J=8.0Hz,4H),7.56(d,J=8.0Hz,2H),7.45-7.38(m,4H),7.35-7.28(m,4H),6.72(s,1H),6.53(d,J=16.0Hz,1H),6.00(dt,J=16.0,8.0Hz,1H),3.08(ddd,J=88.0,16.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 140.1,139.4,137.8,136.5,133.4,129.4,128.5,128.5,127.9,127.4,127.3,126.9,126.8,126.6(q,JC-F=296.9Hz),123.8,76.4(q,JC-F=26.3Hz),38.2.
19F NMR(376MHz,DMSO-d6)δppm-78.20.
the single crystal pattern of the product obtained in this example is shown in FIG. 4. This single crystal picture further demonstrates that the product structure is the E configuration.
The structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000152
example 26:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
to a spiral scale tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2- (4-methoxyphenyl) -4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, and an oxygen balloon was fitted over the scale tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 95%.
The structural characterization data of the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.52(d,J=8.0Hz,2H),7.27-7.15(m,5H),6.94(d,J=8.0Hz,2H),6.61(s,1H),6.50(d,J=16.0Hz,1H),5.98(dt,J=16.0,8.0Hz,1H),3.74(s,3H),3.04(ddd,J=84.0,16.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 159.4,137.4,133.8,129.6,129.0,128.8,127.7,126.5(q,JC-F=287.9Hz),126.2,123.7,113.8,76.1(q,JC-F=27.3Hz),55.4,38.1.
19F NMR(376MHz,DMSO-d6)δppm-78.62.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000161
example 27:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
to a spiral scale tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2- (4-methylphenyl) -4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, and an oxygen balloon was fitted over the scale tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding salt solution and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is petroleum ether with a volume ratio of 100: 1: ethyl acetate mixture; the product yield was 91%.
The structural characterization data of the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.47(d,J=8.0Hz,2H),7.27-7.15(m,7H),6.62(s,1H),6.48(d,J=16.0Hz,1H),5.95(dt,J=16.0.8.0.Hz,1H),3.03(ddd,J=88.0,16.0,8.0Hz,2H),2.28(s,3H).
13C NMR(101MHz,DMSO-d6)δppm 137.7,137.3,134.8,133.8,129.0,127.7,127.3,126.4(q,JC-F=287.9Hz),126.2,123.7,76.3(q,JC-F=27.3Hz),38.1,21.1.
19F NMR(376MHz,DMSO-d6)δppm-78.43.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000171
example 28:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
to a spiral scale tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2- (4-chlorophenyl) -4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, and an oxygen balloon was applied to the scale tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 85%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.63(d,J=8.0Hz,2H),7.45(d,J=8.0Hz,2H),7.27-7.17(m,5H),6.87(s,1H),6.49(d,J=16.0Hz,1H),5.95(dt,J=16.0,8.0Hz,1H),3.07(ddd,J=80.0,12.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δ137.2,136.8,134.2,133.5,129.4,129.0,128.5,127.8,126.3,126.2(q,JC-F=288.9Hz),123.1,76.3(q,JC-F=27.3Hz),38.0.
19F NMR(376MHz,DMSO-d6)δ-78.44.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000181
example 29:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
to a spiral scale tube containing magnetons, 0.2 mmol of 1,1, 1-trifluoro-2- (4, 5-dichlorophenyl) -4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the scale tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 94%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δppm 7.63(m,3H),7.32-7.17(m,5H),7.12(s,1H),6.53(d,J=16.0Hz,1H),5.94(dt,J=16.0,8.0Hz,1H),3.10(ddd,J=120.0,16.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 142.1,137.1,134.6,134.5,129.1,128.6,127.9,126.4,126.3,126.2(q,JC-F=288.9Hz),122.7,76.2(q,JC-F=26.3Hz),37.6.
19F NMR(376MHz,DMSO-d6)δppm-78.28.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000182
example 30:
a method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives comprises the following steps:
in a spiral scale tube equipped with magnetons, 0.2 mmol of 1,1, 1-trifluoro-2- (3, 4-dimethoxyphenyl) -4-penten-2-ol, 0.6 mmol of phenylboronic acid, 0.01 mmol of tetrakis (triphenylphosphine) palladium, 1 ml of dimethyl sulfoxide and 1 ml of N, N-dimethylformamide were added, an oxygen balloon was fitted over the scale tube, and the reaction was stirred at 90 ℃ for 12 hours. Stopping heating and stirring, cooling to room temperature, simultaneously adding saline water and ethyl acetate to extract a reaction solution, performing reduced pressure rotary evaporation on ethyl acetate, removing a solvent, and performing column chromatography separation and purification to obtain a target product, wherein the volume ratio of column chromatography eluent is 100:1 petroleum ether: ethyl acetate mixture; the product yield was 88%.
The structural characterization data for the product obtained in this example are as follows:
1H NMR(400MHz,DMSO-d6)δ7.30-7.21(m,4H),7.21-7.10(m,3H),6.96(d,J=8.5Hz,1H),6.63(s,1H),6.52(d,J=16.0Hz,1H),5.99(dt,J=16.0,7.0Hz,1H),3.75(s,3H),3.75(s,3H),3.05(ddd,J=100.0,16.0,8.0Hz,2H).
13C NMR(101MHz,DMSO-d6)δppm 149.0,148.5,137.4,133.8,130.0,129.0,127.7,126.5(q,JC-F=287.9Hz),126.3,123.8,120.0,111.5,111.5,76.2(q,JC-F=26.3Hz),56.0,55.8,38.2.
19F NMR(376MHz,DMSO-d6)δppm-78.43.
the structure of the product obtained in this example was deduced from the above data:
Figure BDA0003534990000000191
the above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (9)

1. A (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative characterized by: the structure is shown as formula I:
Figure FDA0003534989990000011
wherein Ar1Is phenyl, p-methylphenyl, o-methylphenyl, p-methoxyphenyl, o-methoxyphenyl, 3, 4-dimethoxyphenyl, p-fluorophenyl, o-fluorophenyl, p-chlorophenyl, o-chlorophenyl, 3, 5-dichlorophenyl, p-bromophenyl, o-bromophenyl or p-trifluoromethylphenyl;
Ar2is phenyl, p-tolyl, o-tolyl, p-methoxyphenyl, o-methoxyphenyl, p-methylthiophenyl, p-tert-butylphenyl, p-fluorophenyl, m-fluorophenyl, p-chlorophenyl, p-bromophenyl, o-bromophenyl, 3, 5-dimethylphenyl, p-methylsulfonylphenyl, p-phenylphenyl or 2-naphthyl;
R1is hydrogen, methyl or ethyl;
R2is hydrogen or fluorine;
R3is hydrogen, methyl or ethyl;
R4is hydrogen or methyl.
2. The method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 1, wherein: the method comprises the following steps:
taking an organic solvent as a reaction medium, and reacting the 1-fluoro-2-aryl-4-pentene-2-ol derivative with aryl boric acid under the action of a catalyst and oxygen to obtain a (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-ol derivative;
the 1-fluoro-2-aryl-4-penten-2-ol derivative is
Figure FDA0003534989990000012
Wherein Ar1Is phenyl, p-methylphenyl, o-methylphenyl, p-methoxyphenyl, o-methoxyphenyl, 3, 4-dimethoxyphenyl, p-fluorophenyl, o-fluorophenyl, p-chlorophenyl, o-chlorophenyl, 3, 5-dichlorophenyl, p-bromophenyl, o-bromophenyl or p-trifluoromethylphenyl;
R1is hydrogen, methyl or ethyl;
R2is hydrogen or fluorine;
R3is hydrogen, methyl or ethyl;
R4is hydrogen or methyl;
the arylboronic acid is Ar2B(OH)2Wherein Ar is2Is phenyl, p-tolyl, o-tolyl, p-methoxyphenyl, o-methoxyphenyl, p-methylthiophenyl, p-tert-butylphenyl, p-fluorophenyl, m-fluorophenyl, p-chlorophenyl, p-bromophenyl, o-bromophenyl, 3, 5-dimethylphenyl, p-methylsulfonylphenyl, p-phenylphenyl or 2-naphthyl;
the catalyst is more than one of palladium acetate, palladium iodide, palladium tetrakis (triphenylphosphine) and palladium dichlorodiphenylphosphine.
3. The method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 2, wherein:
the molar ratio of the 1-fluoro-2-aryl-4-penten-2-ol derivative to the arylboronic acid is 1:1-1: 4;
the catalyst is tetrakis (triphenylphosphine) palladium;
the organic solvent is more than one of N, N-dimethylformamide, dimethyl sulfoxide, toluene, nitromethane and tetrahydrofuran.
4. The method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 3, wherein: the molar ratio of the 1-fluoro-2-aryl-4-penten-2-ol derivative to the arylboronic acid is 1: (2-4);
the molar ratio of the catalyst to the 1-fluoro-2-aryl-4-penten-2-ol derivative is 1: (5-100);
the organic solvent is a mixed solvent of N, N-dimethylformamide and dimethyl sulfoxide.
5. The method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 2, wherein: the reaction is carried out in an oxygen atmosphere, the reaction temperature is 40-110 ℃, and the reaction time is 3-16 h.
6. The method for synthesizing (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivatives according to claim 5, wherein: the reaction temperature is 70-100 ℃, and the reaction time is 10-16 h.
7. The method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 2, wherein: and (2) performing subsequent treatment after the reaction is finished, cooling to room temperature after the reaction is finished, adding a salt solution or water and an organic solvent, extracting the reaction solution, performing reduced pressure rotary evaporation on an organic layer to remove the solvent to obtain a crude product, and performing column chromatography purification to obtain the (4E) -1-fluoro-2, 5-diaryl-4-pentene-2-ol derivative.
8. The method for synthesizing the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 7, wherein: in the subsequent treatment, the organic solvent is ethyl acetate or dichloromethane;
the column chromatography purification refers to the purification by using petroleum ether: purifying by column chromatography with mixed solvent of ethyl acetate as eluent; petroleum ether: volume ratio of ethyl acetate: (20-500): 1.
9. Use of the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative according to claim 1, wherein: the (4E) -1-fluoro-2, 5-diaryl-4-penten-2-ol derivative is used in the fields of pesticides, medicines and materials.
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