CN114874167A - Preparation method of 5-hydroxyfuranone derivative - Google Patents

Preparation method of 5-hydroxyfuranone derivative Download PDF

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CN114874167A
CN114874167A CN202210729446.2A CN202210729446A CN114874167A CN 114874167 A CN114874167 A CN 114874167A CN 202210729446 A CN202210729446 A CN 202210729446A CN 114874167 A CN114874167 A CN 114874167A
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hydroxyfuranone
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曾小宝
程振凤
熊星
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Nantong University
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    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/82Benzo [b] furans; Hydrogenated benzo [b] furans 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 carbon atoms of the hetero ring
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    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members 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
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    • C07D409/02Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
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Abstract

The invention relates to the technical field of organic synthesis, in particular to a preparation method of a 5-hydroxyfuranone derivative, which comprises the following steps: the alpha-keto acid compound, the aliphatic ketone compound and the catalyst are sequentially added into an organic solvent, the reaction is carried out at a certain reaction temperature, and the 5-hydroxyfuranone derivative can be prepared by column chromatography purification. The invention takes the alpha-keto acid compound and the aliphatic ketone compound as raw materials, and prepares the 5-hydroxyfuranone derivative by using the cheap and easily available catalyst. The invention provides a new synthetic route for the preparation of the 5-hydroxyfuranone derivative, and has greater application value and potential in industrial production and scientific research.

Description

Preparation method of 5-hydroxyfuranone derivative
Technical Field
The invention relates to the technical field of organic synthesis, in particular to a preparation method of a 5-hydroxyfuranone derivative.
Background
Furanone structures are widely found in biologically active natural product structural molecules. For example: eremophilanolide (eremophilanoids) separated from ligularia plant contains furanone structure (chem.biodiversity 2016,13, 645; nat.prod.rep.2006,23,699), and the compound is also used as Chinese herbal medicine for relieving cough and promoting blood circulation to remove blood stasis (Mini-Rev.Med.chem.2014,14,664). Therefore, the method for preparing the 5-hydroxyfuranone derivative structure, which is simple and efficient to develop, has important industrial production and scientific research values.
The existing method for preparing 5-hydroxyfuranone derivatives mainly comprises a cyclic aliphatic ketone compound and 2-chloro-2-methoxy methyl acetate or 1, 1-dimethoxyacetone, wherein the 2-chloro-2-methoxy methyl acetate or 1, 1-dimethoxyacetone is prepared through multi-step reaction (Synthesis 1979,434; Tetrahedron Lett.2015,56,5545; J.Org.Chem.2004,69,9100), and has the defects of low yield, difficult raw material obtaining, more side reactions and the like. At present, no efficient and simple method for preparing 5-hydroxyfuranone derivatives exists.
Disclosure of Invention
Aiming at the problems, the invention provides a preparation method of the 5-hydroxyfuranone derivative, which has the advantages of mild reaction conditions, simple operation, easily available raw materials, good functional group compatibility and wide substrate application range.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a 5-hydroxyfuranone derivative specifically comprises the following steps: adding an alpha-keto acid compound shown in a formula (II), a fatty ketone compound shown in a formula (III) and a catalyst into an organic solvent in sequence, reacting at a certain reaction temperature, and purifying by column chromatography to obtain a 5-hydroxyfuranone derivative (I), wherein the reaction structural formula is shown as follows;
Figure BDA0003712453440000011
wherein R is 1 Independently selected from any one of phenyl, substituted phenyl, naphthyl, thienyl, C1-C6 alkyl and C1-C6 alkenyl; r 2 And R 3 Independently selected from any one of hydrogen atom, C1-C6 alkyl and C1-C6 alkenyl.
Wherein C1-C6 alkyl refers to straight or branched chain alkyl groups having 1-6 carbon atoms, including: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, n-hexylcyclohexyl, and the like.
C1-C6 alkenyl refers to straight or branched chain carbon-carbon double bond containing substituents having 1-6 carbon atoms, including: ethenyl, propenyl, butenyl, pentenyl, hexenyl, cyclohexenyl.
Preferably, the organic solvent comprises: toluene, fluorobenzene, trifluorotoluene, chlorobenzene, benzene, xylene, tetrahydrofuran, methanol, ethanol, acetonitrile, N-dimethylformamide, N-dimethylacetamide, dimethylsulfoxide, and N-methylpyrrolidone.
Preferably, the catalyst comprises: boron trifluoride diethyl etherate, trifluoromethanesulfonic anhydride, p-toluenesulfonic acid, ferric chloride, bismuth trifluoromethanesulfonate, zinc trifluoromethanesulfonate, yttrium trifluoromethanesulfonate, copper trifluoromethanesulfonate, aluminum chloride and titanium tetrachloride.
Preferably, the molar ratio of the alpha-keto acid compound (II) to the aliphatic ketone compound (III) is 1 (1-3); the mol ratio of the alpha-keto acid compound (II) to the catalyst is 1 (0.05-1); the dosage ratio of the alpha-keto acid compound (II) to the organic solvent is 1mmol (2-15) mL.
Preferably, the reaction temperature is 25-120 ℃ and the reaction time is 0.5-12 hours.
Preferably, the eluent used for the column chromatography purification is a mixed solvent of petroleum ether and ethyl acetate, and the volume ratio of the petroleum ether to the ethyl acetate is (1-10): 1.
The invention has the beneficial effects that:
1. the invention adopts cheap and easily obtained alpha-keto acid compound and aliphatic ketone compound as raw materials and boron trifluoride diethyl etherate as a catalyst to prepare the 5-hydroxyfuranone derivative.
2. The method can be operated under the air condition, is insensitive to oxygen, and has mild reaction condition and simple operation.
3. The invention has the advantages of good functional group compatibility, simple post-treatment, high atom economy and the like.
4. The invention provides a new synthetic route for the preparation of the 5-hydroxyfuranone derivative, and the prepared 5-hydroxyfuranone derivative can play an important role in the field of active drug intermediates and has greater application value and potential in industrial production and scientific research.
Detailed Description
The technical solutions of the present invention are further illustrated and described below by specific embodiments, but the embodiments of the present invention are not limited thereto.
Example 1:
Figure BDA0003712453440000021
adding the above benzoyl formic acid (II), cyclohexanone compound (III) and trifluoroboric acid ethyl ether (BF) into toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the benzoylformic acid (II) to the cyclohexanone compound (III) is 1: 2; benzoylcarboxylic acid (II) with boron trifluoride etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of benzoylcarboxylic acid (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated salt water in an equal volume ratio into a reaction system, oscillating and extracting for 3 times, collecting an organic layer, drying, carrying out rotary evaporation and concentration to obtain a crude product, carrying out chromatography on the crude product by a 300-mesh silica gel column chromatography, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely a compound (C) of a formula (I) with a white solid appearance 14 H 14 O 3 )。
For the compound (C) of the formula (I) obtained in this example 14 H 14 O 3 ) The nuclear magnetic resonance analysis was carried out, and the results were: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.44-7.34(m,5H),4.31(s,1H),2.97-2.94(m,1H),2.53-2.45(m,2H),2.03-1.91(m,1H),1.86-1.74(m,2H),1.64-1.55(m,1H),1.37-1.24(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ170.9,162.2,129.2,128.9(2C),128.6,128.5(2C),124.4,103.2,38.3,26.9,25.6,22.0.
HRMS m/z(ESI)calcd for C 14 H 14 O 3 ,(M+H) + 231.1016;found 231.1014.
Through measurement and calculation: a compound of formula (I) (C) 14 H 14 O 3 ) Yield of 86%, melting point: 102-104 ℃.
Example 2:
Figure BDA0003712453440000031
adding benzoylformic acid (II), tetrahydropyranone compound (III), and trifluoroboric acid diethyl ether (BF) into toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the benzoylformic acid (II) to the tetrahydropyranone compound (III) is 1: 2; benzoylcarboxylic acid (II) with boron trifluoride etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of benzoylcarboxylic acid (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a colorless oily liquid appearance 13 H 12 O 4 )。
For the compound (C) of the formula (I) obtained in this example 13 H 12 O 4 ) The nuclear magnetic resonance analysis was carried out, and the results were: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.45-7.31(m,5H),4.75(d,J=13.2Hz,1H),4.41-4.38(m,2H),4.00-3.96(m,1H),3.86-3.80(m,1H),2.37(d,J=13.4Hz,1H),2.10-1.99(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ170.3,154.8,129.5,128.9(2C),128.7(2C),128.1,126.1,100.9,64.6,62.7,40.0.
HRMS m/z(ESI)calcd for C 13 H 12 O 4 ,(M+H) + 233.0808;found 233.0806.
Through measurement and calculation: a compound of formula (I) (C) 13 H 12 O 4 ) The yield of (a) was 60%.
Example 3:
Figure BDA0003712453440000041
adding benzoylformic acid (II), cycloheptanone compound (III), and trifluoroboric acid diethyl ether (BF) into toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the benzoylformic acid (II) to the cycloheptanone compound (III) is 1: 2; benzoylcarboxylic acid (II) with boron trifluoride etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of benzoylcarboxylic acid (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a white solid appearance 15 H 16 O 3 )。
For the compound (C) of the formula (I) obtained in this example 15 H 16 O 3 ) Nuclear magnetic resonance analysis was performed, with the results: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.44-7.32(m,5H),4.55(s,1H),2.84-2.63(m,2H),2.34(ddd,J=14.2,6.1,2.7Hz,1H),1.99-1.55(m,6H),1.46-1.34(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ171.3,164.2,129.6,128.9(2C),128.5,128.3(2C),127.1,107.7,38.0,28.5,26.6,25.6,23.5.
HRMS m/z(ESI)calcd for C 15 H 16 O 3 ,(M+H) + 245.1172;found 245.1171.
Through measurement and calculation: a compound of formula (I) (C) 15 H 16 O 3 ) Yield of 79%, melting point: 84-86 ℃.
Example 4:
Figure BDA0003712453440000051
adding 4-methylbenzoylcarboxylic acid (II) of the above formula, acetonide (III), trifluoroboric acid ethyl ether (BF) to toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the 4-methylbenzoyl formic acid (II) to the acetonide (III) is 1: 2; 4-Methylbenzoylcarboxylic acid (II) with boron trifluoride diethyl etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of 4-methylbenzoylcarboxylic acid (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a white solid appearance 11 H 10 O 3 )。
For the compound (C) of the formula (I) obtained in this example 11 H 10 O 3 ) The nuclear magnetic resonance analysis was carried out, and the results were: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.78-7.75(m,2H),7.40-7.33(m,3H),7.30(s,1H),4.41(s,1H),1.73(s,3H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ170.0,146.4,132.5,129.8,128.6(3C),127.4(2C),103.7,24.7.
HRMS m/z(ESI)calcd for C 11 H 10 O 3 ,(M+H) + 191.0703;found 191.0705.
Through measurement and calculation: a compound of formula (I) (C) 11 H 10 O 3 ) Is/are as followsYield 59%, melting point: 91-93 ℃.
Example 5:
Figure BDA0003712453440000052
adding the above formula 2- (naphthalen-2-yl) -2-oxoacetic acid (II), cyclohexanone compound (III), and trifluoroboric acid diethyl ether (BF) to toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the 2- (naphthalene-2-yl) -2-oxoacetic acid (II) to the haloalkyne compound (III) is 1: 2; 2- (Naphthalen-2-yl) -2-oxoacetic acid (II) with boron trifluoride etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of 2- (naphthalen-2-yl) -2-oxoacetic acid (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a white solid appearance 18 H 16 O 3 )。
For the compound (C) of the formula (I) obtained in this example 18 H 16 O 3 ) The nuclear magnetic resonance analysis was carried out, and the results were: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.89(s,1H),7.78-7.73(m,3H),7.51-7.38(m,3H),4.70(s,1H),2.98(d,J=13.7Hz,1H),2.60-2.44(m,2H),2.00-1.89(m,1H),1.82-1.75(m,2H),1.63-1.55(m,1H),1.37-1.17(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ171.3,162.7,133.0,132.9,128.6,128.2,128.0,127.6,126.6,126.6,126.2,126.1,124.3,103.5,38.2,26.9,25.8,22.0.
HRMS m/z(ESI)calcd for C 18 H 16 O 3 ,(M+H) + 281.1172;found 281.1170.
Through measurement and calculation: formula (A), (B) andI) compound (C) 18 H 16 O 3 ) Yield of 85%, melting point: 135 ℃ and 137 ℃.
Example 6:
Figure BDA0003712453440000061
adding 4-methylphenylglyoxylic acid compound (II) of the above formula, cyclohexanone compound (III), and trifluoroboric acid diethyl ether (BF) to toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the 4-methyl phenyl glyoxylic acid compound (II) to the cyclohexanone compound (III) is 1: 2; 4-Methylphenylglyoxylic acid compound (II) and boron trifluoride diethyl etherate (BF) 3 ·Et 2 O) is 1: 0.2; the ratio of the 4-methylphenylglyoxylic acid compound (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a white solid appearance 15 H 16 O 3 )。
For the compound (C) of the formula (I) obtained in this example 15 H 16 O 3 ) Nuclear magnetic resonance analysis was performed, with the results: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.32(d,J=8.0Hz,2H),7.19(d,J=7.8Hz,2H),4.23(s,1H),2.95(d,J=13.7Hz,1H),2.52-2.42(m,2H),2.00-1.94(m,1H),1.82-1.75(m,2H),1.62-1.55(m,1H),1.35-1.24(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ171.0,161.5,138.6,129.1(2C),128.8(2C),126.3,124.3,103.2,38.2,26.9,25.6,22.1,21.3.
HRMS m/z(ESI)calcd for C 15 H 16 O 3 ,(M+H) + 245.1172;found 245.1175.
Through measurement and calculation: a compound of formula (I) (C) 15 H 16 O 3 ) Yield of (b) 84%, melting point: 131 ℃ and 133 ℃.
Example 7:
Figure BDA0003712453440000071
adding the above 4-bromophenyl glyoxylic acid compound (II), cyclohexanone compound (III), and trifluoroboric acid ethyl ether (BF) to toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the 4-bromophenyl glyoxylic acid compound (II) to the cyclohexanone compound (III) is 1: 2; 4-bromophenyl glyoxylic acid compound (II) and boron trifluoride diethyl etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of 4-bromophenyl glyoxylic acid compound (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a white solid appearance 14 H 13 BrO 3 )。
For the compound (C) of the formula (I) obtained in this example 14 H 13 BrO 3 ) The nuclear magnetic resonance analysis was carried out, and the results were: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.55-7.49(m,2H),7.32-7.25(m,2H),3.95(s,1H),2.96-2.87(m,1H),2.56-2.43(m,2H),2.08-1.96(m,1H),2.04-1.99(m,2H),1.68-1.57(m,1H),1.42-1.25(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ170.5,162.6,131.7(2C),130.5(2C),128.0,123.5,123.1,103.3,38.3,26.9,25.7,22.0.
HRMS m/z(ESI)calcd for C 14 H 13 BrO 3 ,(M+H) + 309.0121;found 309.0119.
Through measurement and calculation: a compound of formula (I) (C) 14 H 13 BrO 3 ) 80% yield, melting point: 168 ℃ and 170 ℃.
Example 8:
Figure BDA0003712453440000081
adding the above 2-thiophene glyoxylic acid compound (II), cyclohexanone compound (III) and trifluoroboric acid ethyl ether (BF) into toluene 3 ·Et 2 O), followed by a sealing reaction with stirring at a temperature of 40 ℃ for 2 hours.
Wherein the molar ratio of the 2-thiophene glyoxylic acid compound (II) to the cyclohexanone compound (III) is 1: 2; 2-Thiophenemethylenoic acid compound (II) and boron trifluoride diethyl etherate (BF) 3 ·Et 2 O) in a molar ratio of 1: 0.2; the ratio of the 2-thiopheneacetic acid compound (II) to toluene was 1mmol:4 mL.
After the reaction is finished, adding a mixed solution of ethyl acetate and saturated saline water in an equal volume ratio into a reaction system, performing oscillation extraction for 3 times, collecting an organic layer, drying, performing rotary evaporation and concentration to obtain a crude product, performing 300-mesh silica gel column chromatography on the crude product, and using a mixed solution of ethyl acetate and petroleum ether as an eluent, wherein the volume ratio of ethyl acetate to petroleum ether is 1:20, so as to obtain a target product, namely the compound (C) of the formula (I) with a white solid appearance 12 H 12 SO 3 )。
For the compound (C) of the formula (I) obtained in this example 12 H 12 SO 3 ) The nuclear magnetic resonance analysis was carried out, and the results were: 1 h NMR (400MHz, deuterated chloroform CDCl 3 )δ7.64(d,J=3.7Hz,1H),7.39(d,J=5.1Hz,1H),7.08(dd,J=4.9,3.8Hz,1H),3.92(s,1H),3.28-3.23(m,1H),2.61-2.42(m,2H),2.07-2.02(m,1H),1.89-1.72(m,2H),1.67-1.52(m,1H),1.46-1.29(m,1H).
13 C NMR (100MHz, deuterated chloroform CDCl 3 )δ169.8,158.5,130.7,128.5,127.3,126.9,118.2,103.3,38.3,26.7,26.2,22.0.
HRMS m/z(ESI)calcd for C 12 H 12 SO 3 ,(M+H) + 237.0580;found 237.0582.
Through measurement and calculation: a compound of formula (I) (C) 12 H 12 SO 3 ) Yield of (b) 72%, melting point: 70-72 ℃.
In conclusion, the invention takes the alpha-keto acid compound and the aliphatic ketone compound as raw materials, and takes the cheap and easily available acid as the catalyst to prepare the 5-hydroxyfuranone derivative, and the method has the advantages of high reaction yield, simple operation, high atom economy, good functional group compatibility and wide substrate application range. The invention provides a brand new route for preparing the 5-hydroxyfuranone derivative.
It is to be noted that the present invention is not described in detail, and is well known to those skilled in the art.
The above examples are only for further illustrating the preparation method of a 5-hydroxyfuranone derivative according to the present invention, but the present invention is not limited to the examples, and all equivalent changes and modifications made to the above examples according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (6)

1. A preparation method of a 5-hydroxyfuranone derivative is characterized by comprising the following steps: adding an alpha-keto acid compound shown in a formula (II), a fatty ketone compound shown in a formula (III) and a catalyst into an organic solvent in sequence, reacting at a certain reaction temperature, and purifying by column chromatography to obtain a 5-hydroxyfuranone derivative (I), wherein the reaction structural formula is shown as follows;
Figure FDA0003712453430000011
wherein R is 1 Independently selected from any one of phenyl, substituted phenyl, naphthyl, thienyl, C1-C6 alkyl and C1-C6 alkenyl; r 2 And R 3 Independently selected from any one of hydrogen atom, C1-C6 alkyl and C1-C6 alkenyl.
2. The method according to claim 1, wherein the organic solvent comprises: toluene, fluorobenzene, trifluorotoluene, chlorobenzene, benzene, xylene, tetrahydrofuran, dichloromethane, 1, 2-dichloroethane, ethanol, acetonitrile, N-dimethylformamide, N-dimethylacetamide, dimethylsulfoxide, and N-methylpyrrolidone.
3. The method of claim 1, wherein the catalyst comprises: boron trifluoride diethyl etherate, trifluoromethanesulfonic anhydride, p-toluenesulfonic acid, ferric chloride, bismuth trifluoromethanesulfonate, zinc trifluoromethanesulfonate, yttrium trifluoromethanesulfonate, copper trifluoromethanesulfonate, aluminum chloride and titanium tetrachloride.
4. The method according to claim 1, wherein the molar ratio of the α -keto acid compound (II) to the aliphatic ketone compound (III) is 1 (1-3); the mol ratio of the alpha-keto acid compound (II) to the catalyst is 1 (0.05-1); the dosage ratio of the alpha-keto acid compound (II) to the organic solvent is 1mmol (2-15) mL.
5. The method of claim 1, wherein the reaction temperature is 25-120 ℃ and the reaction time is 0.5-12 hours.
6. The preparation method of the 5-hydroxyfuranone derivative according to claim 1, wherein an eluent used for the column chromatography purification is a mixed solvent of petroleum ether and ethyl acetate, and the volume ratio of the petroleum ether to the ethyl acetate is (1-10): 1.
CN202210729446.2A 2022-06-24 2022-06-24 Preparation method of 5-hydroxyfuranone derivative Pending CN114874167A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09110853A (en) * 1995-10-12 1997-04-28 Kikkoman Corp 4-acyloxyfuranone derivative or its salt and its production
CN106565644A (en) * 2016-10-28 2017-04-19 上海大学 3- alkyl-5-hydroxy-4-aryl furanone derivative and preparation method thereof
WO2019083001A1 (en) * 2017-10-27 2019-05-02 住友化学株式会社 Method for producing benzoyl formic acid compound and pyridazine compound
CN110294725A (en) * 2019-07-03 2019-10-01 广东医科大学 A kind of derivative and its process for catalytic synthesis of sponge furanone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09110853A (en) * 1995-10-12 1997-04-28 Kikkoman Corp 4-acyloxyfuranone derivative or its salt and its production
CN106565644A (en) * 2016-10-28 2017-04-19 上海大学 3- alkyl-5-hydroxy-4-aryl furanone derivative and preparation method thereof
WO2019083001A1 (en) * 2017-10-27 2019-05-02 住友化学株式会社 Method for producing benzoyl formic acid compound and pyridazine compound
CN110294725A (en) * 2019-07-03 2019-10-01 广东医科大学 A kind of derivative and its process for catalytic synthesis of sponge furanone

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