CN115557888A - Method for preparing quinoline derivative by photocatalysis of N-aryl glycine ester - Google Patents

Method for preparing quinoline derivative by photocatalysis of N-aryl glycine ester Download PDF

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CN115557888A
CN115557888A CN202211387768.XA CN202211387768A CN115557888A CN 115557888 A CN115557888 A CN 115557888A CN 202211387768 A CN202211387768 A CN 202211387768A CN 115557888 A CN115557888 A CN 115557888A
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CN115557888B (en
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罗再刚
徐雪梅
韦丹丹
张佳琦
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Anhui University of Science and Technology
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D215/00Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/48Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D215/54Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3

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Abstract

The invention discloses a method for preparing quinoline derivatives by photocatalysis of N-aryl glycine ester, which comprises the following steps: dissolving the N-aryl glycine ester compound and the butynedicarboxylic acid ester compound in a dimethyl sulfoxide solvent, adding a photosensitizer and dicumyl peroxide, reacting at room temperature for 24 hours under the condition of blue light irradiation, and after the reaction is finished, performing column chromatography separation to obtain the quinoline derivative. The preparation method has the advantages of cheap and easily-obtained raw materials, mild reaction system, simple operation and high yield. Quinoline derivatives have a wide range of applications and are also useful as synthetic intermediates.

Description

Method for preparing quinoline derivative by photocatalysis of N-aryl glycine ester
Technical Field
The invention belongs to the field of organic synthetic chemistry, and relates to a method for preparing a quinoline derivative by photocatalysis of N-aryl glycine ester, in particular to a method for preparing a quinoline derivative by an addition cyclization reaction of an N-aryl glycine ester compound and a butyne dicarboxylic acid ester compound in the presence of an oxidant and a photosensitizer and under the irradiation of a blue light LED.
Background
Quinoline and its derivatives are nitrogen-containing heterocycles widely existing in nature, have wide biological activities, are important synthetic intermediates in the field of organic synthesis, and have wide application in other industrial fields, so the synthetic method thereof is concerned. The traditional quinoline skeleton synthesizing method includes Skraup reaction, combes reaction, conrad-Limbach reaction, doebner-VonMuller reaction, gould-Jacobs reaction, friedlander reaction, povavov reaction, pfitzinger reaction and the like, and the reaction conditions are harsh, side reactions are more, and pollution is serious. Recently, numerous documents report methods for preparing quinoline derivatives by photocatalytic reaction, such as: (1) Zhang et al reported a method (j.org.chem., 2016,81,12433-12442.) of producing quinoline derivatives by a visible light catalytic oxidative dehydrogenation coupling/aromatization tandem reaction of glycine ester and unactivated olefin, but the reaction requires a synergistic effect of copper salt and a photocatalyst to be able to react, and the reaction system is relatively complex. (2) Jiang et al also reported that a variety of alpha-branched 2-vinylpyridine and 2-vinylquinoline compounds were subjected to redox, radical conjugate addition, and protonation processes with glycine, respectively, using visible light-induced dual concerted catalysis of chiral phosphoric acid and DPZ photosensitizer, and finally a variety of chiral 3- (2-pyridine/quinoline) -3-substituted amine compounds were obtained in high yield (J.Am.Chem.Soc., 2018,140, 6083-6087.). In the reaction, the reaction can be carried out only by the synergistic action of the cobalt salt, the additive and the photocatalyst, the reaction system is complex, the separation is difficult, the substrate applicability is poor, and the large-scale popularization and application are difficult.
Therefore, there is still a need to develop and optimize new methods for preparing polysubstituted quinoline derivatives.
Disclosure of Invention
The present invention is directed to provide a method for preparing quinoline derivatives, which overcomes the drawbacks and shortcomings of the prior art.
The invention uses N-aryl glycine ester compounds and butynedioic acid ester compounds as raw materials, and reacts for 24 hours at room temperature in the presence of an oxidant and a photosensitizer in a dimethyl sulfoxide solution and under the irradiation of a blue light LED, and quinoline derivatives are generated through addition cyclization reaction. The reaction method has the advantages of cheap and easily-obtained raw materials, mild reaction conditions, no need of using transition metal, simple post-treatment process, wide product expansion range and good industrialization potential.
The synthetic route principle of the invention is as follows:
Figure BDA0003930745660000021
wherein R is 1 Is represented by H, or is fluorine, chlorine, bromine, methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, methoxy, ethoxy, tri-butylFluoromethyl, substituted phenyl, these substituents can be substituted at ortho, meta, para and multi-position of the phenyl ring; r 2 Expressed as methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, benzyl; r 3 Expressed as methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, phenyl, benzyl; using a blue LED lamp as a light source; the oxidant is di-tert-butyl peroxide, or one of benzoyl peroxide, dicumyl peroxide and tert-butyl hydroperoxide; the photosensitizer is terpyridine ruthenium chloride hexahydrate or one of iridium bis (2-phenylpyridine) acetylacetonate, erythrosin B, eosin Y and rose bengal; the reaction solvent is acetonitrile, or one of dimethyl sulfoxide, N, N-dimethylformamide, 1,4-dioxane, chlorobenzene, toluene, fluorobenzene and tetrahydrofuran.
In order to achieve the purpose, the invention adopts the following technical scheme for synthesizing the compound:
adding N-aryl glycine ester compound 1, butynedioic acid ester compound 2, oxidant, photosensitizer and reaction solvent into a reaction tube in sequence, and placing the reaction tube under the irradiation of blue light (blue LED) to react for 24 hours at room temperature after the addition. And after the reaction is finished, performing flash column chromatography separation to obtain the quinoline derivative 3.
The reaction light source in the method is a 24W blue LED lamp.
Dicumyl peroxide is selected as the reaction oxidant in the method.
The reaction photosensitizer is selected from rose bengal in the photosensitizers in the method.
Dimethyl sulfoxide is selected as the reaction solvent in the organic solvent in the method.
The mass ratio of the N-methylbiphenyl-2-amine compound 1, the butynedicarboxylate compound 2, the oxidant and the photosensitizer in the above method is 1.
Compared with the route of the prior art, the invention has the following advantages:
(1) The method has the advantages of wide substrate application range, mild reaction conditions, simple post-treatment process, high product yield and wide product extension range.
(2) The method is simple, green, efficient and superior to the synthesis method reported in the existing literature, and the quinoline derivative is prepared by the addition cyclization reaction of the N-aryl glycine ester compound and the butynedioic acid ester compound under the irradiation of blue light without using transition metal catalysis.
Detailed Description
The invention is described in further detail with reference to specific examples, but the scope of the invention as claimed is not limited thereto.
Example 1 was carried out: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.006g (0.01 mmol) of ruthenium terpyridine chloride hexahydrate, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were added in this order to a 10mL reaction tube, the reaction was magnetically stirred 24h under irradiation of a 24W blue LED and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oily substance 22mg with a yield of 68%. 1 H NMR(400Hz,CDCl 3 )(δ,ppm)8.31(d,J=8.4Hz,1H),8.06(d,J=8.0Hz,1H),7.91(m,1H),7.76(m,1H),4.54(q,J=7.2Hz,2H),4.08(s,3H),3.98(s,3H),1.47(t,J=7.2Hz,3H). 13 C NMR(100MHz,CDCl 3 Ppm) 166.02,165.91,165.42,148.43,147.70,140.22,132.18,130.60,130.00,125.64,123.71,122.74,77.36,77.04,76.72,62.77,53.37,53.23,14.16 the reaction principle for example 1 is implemented as follows:
Figure BDA0003930745660000031
example 2 was carried out: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.006g (0.01 mmol) of ruthenium terpyridine chloride hexahydrate, 0.048g (0.2 mmol) of benzoyl peroxide and 2mL of DMSO were sequentially added to a 10mL reaction tube, the reaction was magnetically stirred under irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oily substance 20mg in 62% yield. Example 2 the reaction principle is as follows:
Figure BDA0003930745660000032
example 3 of implementation: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.006g (0.01 mmol) of ruthenium terpyridine chloride hexahydrate, 0.054g (0.2 mmol) of potassium persulfate and 2mL of DMSO were sequentially added to a 10mL reaction tube, the reaction was magnetically stirred under irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oily substance 21mg in a yield of 65%. Example 3 the reaction principle is as follows:
Figure BDA0003930745660000033
example 4 of implementation: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.008g (0.01 mmol) of erythrosin B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were sequentially added to a 10mL reaction tube, the reaction was magnetically stirred under irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to give 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oil, 23mg, yield 72%. Example 4 the reaction principle is as follows:
Figure BDA0003930745660000041
example 5 was carried out: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.007g (0.01 mmol) of eosin Y, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO are added in succession to a 10mL reaction tube, the reaction is stirred magnetically under the irradiation of a 24W blue LED 24h and the progress of the reaction is monitored by TLC. After the reaction, column chromatography was performed to give 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oil 22mg in 70% yield. Example 5 the reaction principle is as follows:
Figure BDA0003930745660000042
example 6 was carried out: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose bengal (Rose B), 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were added in succession to a 10mL reaction tube, the reaction was stirred magnetically under the irradiation of a 24W blue LED 24h and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oily substance in a yield of 25mg (78%). Example 6 the reaction principle is as follows:
Figure BDA0003930745660000043
example 7 was carried out: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of tetrahydrofuran were sequentially added to a 10mL reaction tube, the reaction was magnetically stirred under irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to give 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oil (7 mg) in 23% yield. Example 7 the reaction principle is as follows:
Figure BDA0003930745660000051
example 8 was carried out: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1a,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of acetonitrile were successively charged into a 10mL reaction tube, the reaction was magnetically stirred under irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to give 2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3a as a yellow oil 13mg in 42% yield. Example 8 the reaction principle is as follows:
Figure BDA0003930745660000052
example 9 was carried out: 0.019g (0.1 mmol) of ethyl N- (4-methyl-) phenylglycine 1b,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were added in this order to a 10mL reaction tube, the reaction was magnetically stirred 24h under the irradiation of a 24W blue LED, and the progress of the reaction was monitored by TLC. After the reaction, 6-methyl-2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3b was obtained as a yellow oily substance (29.5 mg) with a yield of 89% by column chromatography. 1 H NMR(400MHz,CDCl 3 ,ppm)δ8.19(d,J=8.8Hz,1H),7.79(s,1H),7.73(dd,J=8.8,2.0Hz,1H),4.53(q,J=7.2Hz,2H),4.08(s,3H),3.97(s,3H),2.60(s,3H),1.46(t,J=7.2Hz,3H). 13 C NMR(100MHz,CDCl 3 Ppm) delta 166.20,165.51,147.33,146.40,140.76,139.30,134.58,130.27,124.29,123.80,122.89,119.82,77.37,77.05,76.73,62.69,53.33,53.18,22.12,14.17 the reaction principle for example 9 is implemented as follows:
Figure BDA0003930745660000053
example 10 of implementation: 0.021g (0.1 mmol) of ethyl N- (3,5-dimethyl-) phenylglycine 1c,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were sequentially added to a 10mL reaction tube, the reaction was magnetically stirred under irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography was performed to give 5,7-dimethyl-2-ethoxycarbonyl-3,4-dimethoxycarbonylquinoline 3c as a yellow oil 29.7mg, yield 86%. 1 H NMR(400MHz,CDCl 3 ,ppm)δ7.95(s,1H),7.39(s,1H),4.51(q,J=7.2Hz,2H),4.04(s,3H),3.95(s,3H),2.63(s,3H),2.55(s,3H),1.46(t,J=7.2Hz,3H). 13 C NMR(100MHz,CDCl 3 ,ppm)δ168.50,166.20,165.59,149.20,147.75,142.47,140.07,134.93,134.43,128.57,121.82,120.86,77.36,77.05,76.73,62.61,53.19,53.15,21.62,20.69,14.18 the reaction principle for example 10 is implemented as follows:
Figure BDA0003930745660000061
example 11 of implementation: 0.026g (0.1 mmol) of ethyl N- (4-bromo-) phenylglycine 1d,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were added in succession to a 10mL reaction tube, the reaction was stirred magnetically 24h under irradiation of a 24W blue LED, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography separation was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonyl-6-bromoquinoline 3d as a white solid (24.1 mg) with a yield of 61%. 1 H NMR(400MHz,CDCl 3 ,ppm)δ8.26(d,J=2.0Hz,1H),8.16(d,J=9.2Hz,1H),7.97(dd,J=8.8Hz,2.0Hz,1H),4.53(q,J=7.2Hz,2H),4.08(s,3H),3.98(s,3H),1.47(t,J=7.2Hz,3H). 13 C NMR(100MHz,CDCl 3 Ppm) delta 165.75,165.41,165.03,148.37,146.26,138.68,135.78,132.09,127.88,124.94,124.84,124.22,77.37,77.05,76.74,62.93,53.60,53.35,14.15 the reaction principle for example 11 is implemented as follows:
Figure BDA0003930745660000062
example 12 of implementation: 0.020g (0.1 mmol) of ethyl N- (4-fluoro-) phenylglycine 1e,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO are added in succession to a 10mL reaction tube, the reaction is stirred magnetically 24h under the irradiation of a 24W blue LED and the progress of the reaction is monitored by TLC. After the reaction, column chromatography was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonyl-6-fluoroquinoline 3e as a pale yellow solid, 24.8mg, and 74% yield. 1 H NMR(400MHz,CDCl 3 ,ppm)δ8.33(dd,J=9.2,5.2Hz,1H),7.78(dd,J=9.6,2.4Hz,1H),7.68(m,J=8.4,2.4Hz,1H),4.54(q,J=7.2Hz,2H),4.07(s,3H),3.99(s,3H),1.47(t,J=7.2Hz,3H). 13 C NMR(100MHz,CDCl 3 Ppm) delta 166.00,165.48,163.84,161.32,147.27,144.84,138.70,133.46,125.12,124.61,122.78,109.65,77.36,77.05,76.73,62.88,53.52,53.32,14.16 the reaction principle for example 12 is implemented as follows:
Figure BDA0003930745660000063
example 13: 0.022g (0.1 mmol) of N- (4-chloro-) phenylglycine ethyl ester 1f,0.028g (0.2 mmol) of but-idenedicarboxylic acid methyl ester 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO are added in succession to a 10mL reaction tube, the reaction is stirred magnetically for 24h under the irradiation of a 24W blue LED, and the progress of the reaction is monitored by TLC. After the reaction, column chromatography separation was performed to obtain 2-ethoxycarbonyl-3,4-dimethoxycarbonyl-6-chloroquinoline 3f as a pale yellow solid (26.4 mg) in a yield of 75%. 1 H NMR(400Hz,CDCl 3 )(δ,ppm)8.24(d,J=9.2Hz,1H),8.09(d,J=2.4Hz,1H),7.84(dd,J=8.8,2.0Hz,1H),4.53(q,J=7.2Hz,2H),4.08(s,3H),3.98(s,3H),1.47(t,J=7.2Hz,3H); 13 C NMR(100MHz,CDCl 3 ) δ 165.76,165.39,164.99,148.25,146.06,138.74,136.51,133.17,132.09,129.31,124.56,121.04,77.36,77.04,76.72,62.89,53.55,53.31,14.14 the reaction principle for example 13 was implemented as follows:
Figure BDA0003930745660000071
example 14 was carried out: 0.017g (0.1 mmol) of methyl N-phenylglycine 1g,0.028g (0.2 mmol) of methyl butynedicarboxylate 2a, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO are successively introduced into a 10mL reaction tube, the reaction is magnetically stirred under the irradiation of a 24W blue LED for 24h, and the progress of the reaction is monitored by TLC. After the reaction, column chromatography was performed to obtain 3g of 2-methoxycarbonyl-3,4-dimethoxycarbonylquinoline as a yellow solid (16.7 mg) with a yield of 55%. 1 H NMR(500Hz,CDCl 3 )(δ,ppm)8.30(dt,J=8.4,0.8Hz,1H),8.07(dt,J=8.4,1.0Hz,1H),7.91(m,1H),7.76(m,1H),4.07(d,J=1.6Hz,6H),3.98(s,3H); 13 C NMR(100MHz,CDCl 3 ) δ 165.95,165.89,165.71,147.76,147.63,140.04,132.21,130.58,130.15,125.67,123.83,123.18,77.37,77.05,76.73,53.51,53.38,53.31 the reaction principle for example 14 was implemented as follows:
Figure BDA0003930745660000072
example 15 of implementation: 0.018g (0.1 mmol) of ethyl N-phenylglycine 1h,0.045g (0.2 mmol) of tert-butyl butynedicarboxylate 2B, 0.010g (0.01 mmol) of Rose B, 0.054g (0.2 mmol) of dicumyl peroxide and 2mL of DMSO were successively introduced into a 10mL reaction tube, the reaction was magnetically stirred under the irradiation of a 24W blue LED for 24h, and the progress of the reaction was monitored by TLC. After the reaction, column chromatography separation was performed to obtain 2-ethoxycarbonyl-3,4-di-tert-butoxycarbonylquinoline in 20.9mg of a yellow solid in 52% yield for 3 h. 1 H NMR(400Hz,CDCl 3 )(δ,ppm)8.25(dd,J=8.5,1.3,0.6Hz,1H),8.00(dd,J=8.4,1.4,0.7Hz,1H),7.85(m,1H),7.72(m,1H),4.54(q,J=7.2Hz,2H),1.70(s,9H),1.62(s,9H),1.47(t,J=7.2Hz,3H); 13 C NMR(100MHz,CDCl 3 ) δ 165.89,165.00,164.23,149.16,147.34,141.93,131.58,130.37,129.43,125.36,123.88,122.92,84.53,83.72,77.36,77.04,76.73,62.49,28.15,27.92,14.17 the reaction principle for example 15 was implemented as follows:
Figure BDA0003930745660000081

Claims (6)

1. a method for preparing quinoline derivatives by photocatalysis of N-aryl glycine ester is characterized by comprising the following steps: dissolving an N-aryl glycine ester compound 1 and a butynedioic acid ester compound 2 in a reaction solvent, adding an oxidant and a photosensitizer, reacting at room temperature for 24 hours under the irradiation of a blue light LED, and after the reaction is finished, performing column chromatography separation to obtain a target product quinoline derivative 3, wherein the reaction formula is as follows:
Figure FDA0003930745650000011
wherein R is 1 Represented by H, or by fluorine, chlorine, bromine, methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, methoxy, ethoxy, trifluoromethyl, substituted phenyl, these substituents being substitutable in the ortho, meta, para and multi-positions of the phenyl ring; r 2 Expressed as methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, benzyl; r is 3 Expressed as methyl, ethyl, propyl, butyl, isopropyl, tert-butyl, phenyl, benzyl; using a blue LED lamp as a light source; the oxidant is di-tert-butyl peroxide, or one of benzoyl peroxide, dicumyl peroxide and tert-butyl hydroperoxide; the photosensitizer is terpyridine ruthenium chloride hexahydrate or one of iridium bis (2-phenylpyridine) acetylacetonate, erythrosin B, eosin Y and rose bengal; the reaction solvent is acetonitrile, or one of dimethyl sulfoxide, N, N-dimethylformamide, 1,4-dioxane, chlorobenzene, toluene, fluorobenzene and tetrahydrofuran.
2. The method for preparing quinoline derivative 3 through photocatalysis of N-aryl glycine ester according to claim 1, wherein a 24W blue LED lamp is selected as the reaction light source.
3. The method for preparing quinoline derivative 3 by photocatalysis of N-aryl glycine ester of claim 1, wherein dicumyl peroxide is selected as the reaction oxidant.
4. The method for preparing quinoline derivative 3 through N-arylglycine ester photocatalysis according to claim 1, wherein rose bengal is selected as the reaction photosensitizer.
5. The method for preparing quinoline derivative 3 by photocatalysis of N-aryl glycine ester of claim 1, wherein dimethyl sulfoxide is used as the reaction solvent.
6. The method for preparing quinoline derivatives 3 by photocatalysis of N-aryl glycine ester according to claim 1, wherein the mass ratio of the N-aryl glycine ester compound 1, the butyndicarboxylate compound 2, the oxidant and the photosensitizer is 1.
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