CN108440264A - A kind of synthetic method of isoliquiritigenin - Google Patents

A kind of synthetic method of isoliquiritigenin Download PDF

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Publication number
CN108440264A
CN108440264A CN201810373979.5A CN201810373979A CN108440264A CN 108440264 A CN108440264 A CN 108440264A CN 201810373979 A CN201810373979 A CN 201810373979A CN 108440264 A CN108440264 A CN 108440264A
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isoliquiritigenin
synthetic method
added
stirred
hydroxy
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杨双兵
门万辉
金联明
邹菁
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HUBEI LINGSHENG PHARMACEUTICAL Co.,Ltd.
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HUBEI LINGSHENG PHARMACEUTICALS Co Ltd
Wuhan Institute of Technology
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/65Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/18Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804Compounds having Si-O-C linkages
    • C07F7/1872Preparation; Treatments not provided for in C07F7/20
    • C07F7/188Preparation; Treatments not provided for in C07F7/20 by reactions involving the formation of Si-O linkages
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/18Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804Compounds having Si-O-C linkages
    • C07F7/1872Preparation; Treatments not provided for in C07F7/20
    • C07F7/1892Preparation; Treatments not provided for in C07F7/20 by reactions not provided for in C07F7/1876 - C07F7/1888

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Abstract

The present invention relates to technical field of organic synthesis, specifically disclose a kind of synthetic method of isoliquiritigenin.The synthetic method of the isoliquiritigenin, with 2,4 hydroxy acetophenones and 4 hydroxy benzaldehydes for raw material, by hydroxyl protection, aldol condensation, hydroxyl deprotection reaction, you can obtain product isoliquiritigenin.The synthetic method of isoliquiritigenin provided by the invention; method is simple and practicable, and reaction condition is mild, securely and reliably; raw material is easy to get; it is cheap, it is at low cost, using at least one of dimethyl tertiary butyl chlorosilane, tri isopropyl chlorosilane to 4 hydroxy benzaldehydes and 2; 4 hydroxyls of 4 resacetophenones carry out hydroxyl protection; the risk that by-product generates is reduced, the yield of isoliquiritigenin is improved, is suitble to industrialized production.

Description

A kind of synthetic method of isoliquiritigenin
Technical field
The present invention relates to technical field of organic synthesis more particularly to a kind of synthetic methods of isoliquiritigenin.
Background technology
Radix Glycyrrhizae is herbaceos perennial, and the root and rhizome of Radix Glycyrrhizae has tonifying middle-Jiao and Qi, expelling phlegm and arresting coughing, relieving spasm to stop pain, solution The effect of poison and coordinating the drug actions of a prescription.The active constituent of Radix Glycyrrhizae includes mainly three note saponin(es and a variety of flavones.And isoliquiritigenin is exactly it In the compound of a kind of chalcone separated from the hydrolysate of licorice.
Isoliquiritigenin is important one of medicinal active ingredient in liquorice flavonoids compound, in multiple pharmacological effect In show stronger bioactivity, it is such as antitumor, it is antiviral, the effects that Green Tea Extract, anti-arrhythmia.It is wherein antitumor Activity is the hot spot of Recent study, and research finds that isoliquiritigenin has prevention and inhibits tumour growth, protects liver and kidney, confrontation Toxic effect caused by chemotherapy.It can inhibit lung cancer, prostate cancer, liver cancer, colon cancer, gastric cancer, the kinds of tumors such as cervical carcinoma are thin The proliferation of born of the same parents, and be in concentration and time dependence, there can be the suppression of bigger to cancer cell by the isoliquiritigenin of high concentration for a long time Effect processed.In addition isoliquiritigenin also has the function of potential anti-inflammatory, this will have exploitation novel anti-inflammatory drug important Meaning.In addition it can also effectively inhibit and kill AIDS virus, enhance human immunity;Inhibit ulcer, the work(such as delaying human body caducity Energy.It is now widely used for medicine and food service industry, as drug, cosmetics, food additives etc..
So far, report that the document of related isoliquiritigenin synthesis is not very much, the production of synthesizing isoliquiritigenin both at home and abroad Rate is relatively low, and cost is higher, and reaction condition is more demanding, is not suitable for industrialized production.
Invention content
Relatively low for the yield of existing isoliquiritigenin, the problems such as cost is higher, and reaction condition is more demanding, the present invention provides A kind of synthetic method of isoliquiritigenin.
To achieve the above object of the invention, the embodiment of the present invention uses the following technical solution:
A kind of synthetic method of isoliquiritigenin, with 2,4-hydroxyacetophenone and 4- hydroxy benzaldehydes are raw material, reactional equation Formula is as follows:
Wherein, BASE is one kind in imidazoles, diisopropylethylamine;TBAF is tetrabutyl amine fluoride;Hydroxy protecting agent For at least one of dimethyl tertiary butyl chlorosilane, tri isopropyl chlorosilane;Lewis base be sodium hydroxide, potassium hydroxide, It is a kind of in sodium hydride, sodium methoxide or sodium ethoxide.
Specific synthesis step is as follows:
(1) 2,4-dihydroxyacetophenone is provided, the 2,4-dihydroxyacetophenone is mixed with alkaline reagent, organic solvent Afterwards, hydroxy protecting agent is added, is stirred to react under the conditions of 0-100 DEG C, to 4 hydroxyls of the 2,4-dihydroxyacetophenone into Row hydroxyl protection;
(2) 4- hydroxy benzaldehydes are provided, after the 4- hydroxy benzaldehydes are mixed with alkaline reagent, organic solvent, are added Hydroxy protecting agent is stirred to react under the conditions of 0-100 DEG C, and hydroxyl protection is carried out to the 4- hydroxy benzaldehydes;
It (3) will be through the 2,4- resacetophenones after step (1) hydroxyl protection, the 4- hydroxyls after step (2) hydroxyl protection Benzaldehyde mixes in organic solvent, and lewis base is added, is stirred to react under the conditions of 25~100 DEG C, obtains aldol condensation Product;
(4) Aldol Condensation Products described in step (3) are added in organic solvent, the tetrahydrochysene of tetrabutyl amine fluoride is added Tetrahydrofuran solution, is stirred to react under the conditions of 10~100 DEG C, carries out deprotection processing to the Aldol Condensation Products, is prepared Isoliquiritigenin;
Wherein, step (1), the hydroxy protecting agent described in step (2) are independently chosen from dimethyl tertiary butyl chlorosilane, three At least one of isopropyl chloride silane.
Compared with the existing technology, the synthetic method of isoliquiritigenin provided by the invention, method is simple and practicable, reaction condition temperature With securely and reliably, raw material is easy to get, cheap, at low cost, using in dimethyl tertiary butyl chlorosilane, tri isopropyl chlorosilane At least one 4- hydroxyls to 4- hydroxy benzaldehydes and 2,4-dihydroxyacetophenone carry out hydroxyl protection, reduce by-product and generate Risk, improve the yield of isoliquiritigenin, be suitble to industrialized production.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
The embodiment of the present invention provides a kind of synthetic method of isoliquiritigenin.The synthetic method of the isoliquiritigenin, with 2,4- hydroxyls Benzoylformaldoxime and 4- hydroxy benzaldehydes are raw material, by hydroxyl protection, aldol condensation, hydroxyl deprotection reaction, you can produced Object isoliquiritigenin, specific synthesis step are as follows:
(1) 2,4-dihydroxyacetophenone is provided, the 2,4-dihydroxyacetophenone is mixed with alkaline reagent, organic solvent Afterwards, hydroxy protecting agent is added, is stirred to react under the conditions of 0-100 DEG C, to 4 hydroxyls of the 2,4-dihydroxyacetophenone into Row hydroxyl protection;
(2) 4- hydroxy benzaldehydes are provided, after the 4- hydroxy benzaldehydes are mixed with alkaline reagent, organic solvent, are added Hydroxy protecting agent is stirred to react under the conditions of 0-100 DEG C, and hydroxyl protection is carried out to the 4- hydroxy benzaldehydes;
It (3) will be through the 2,4- resacetophenones after step (1) hydroxyl protection, the 4- hydroxyls after step (2) hydroxyl protection Benzaldehyde mixes in organic solvent, and lewis base is added, is stirred to react under the conditions of 25~100 DEG C, obtains aldol condensation Product;
(4) Aldol Condensation Products described in step (3) are added in organic solvent, the tetrahydrochysene of tetrabutyl amine fluoride is added Tetrahydrofuran solution, is stirred to react under the conditions of 10~100 DEG C, carries out deprotection processing to the Aldol Condensation Products, is prepared Isoliquiritigenin;
Wherein, step (1), the hydroxy protecting agent described in step (2) are independently chosen from dimethyl tertiary butyl chlorosilane, three At least one of isopropyl chloride silane.
Specifically, in step (1), (2), the alkaline reagent provides alkaline environment, for 4- hydroxy benzaldehydes and 2,4- The 4- hydroxyls of resacetophenone carry out hydroxyl protection and provide suitable chemical environment, meanwhile, the alkaline reagent is used as and urges Agent promotes the progress of hydroxyl protection reaction.Preferably, the alkaline reagent in imidazoles, diisopropylethylamine at least It is a kind of.
Preferably, the lewis base in sodium hydroxide, potassium hydroxide, sodium hydride, sodium methoxide, sodium ethoxide at least One kind, catalyst of the lewis base as aldol condensation promote the progress of reaction.
In the embodiment of the present invention, the organic solvent provides environment for dissolving reactant, for reaction.Preferably, described Organic solvent is in methanol, ethyl alcohol, N,N-dimethylformamide, tetrahydrofuran, dichloromethane, isopropyl ether, dimethyl sulfoxide (DMSO) At least one.
Preferably, in step (1), the molar ratio of the 2,4-dihydroxyacetophenone and hydroxy protecting agent is 1:1.2-1: 1.8, ensure the thorough progress of hydroxyl protection reaction, the 4- hydroxyls of 2,4-dihydroxyacetophenone is made to be fully protected.
Preferably, in step (1), the reaction temperature being stirred to react is 0~50 DEG C, and the reaction time is 4~6h, into one Preferably, in step (1), the reaction temperature being stirred to react is 25-30 DEG C to step, and reaction temperature is milder, securely and reliably, And ensure the abundant progress of reaction.
Preferably, in step (2), the molar ratio of the 4- hydroxy benzaldehydes and hydroxy protecting agent is 1:1.2-1:1.8 The thorough progress for ensureing hydroxyl protection reaction, makes the 4- hydroxyls of 4- hydroxy benzaldehydes be fully protected.
Preferably, in step (2), the reaction temperature being stirred to react is 0~50 DEG C, and the reaction time is 3~5h, into one Preferably, in step (2), the reaction temperature being stirred to react is 25-30 DEG C to step, and reaction temperature is milder, securely and reliably, And ensure the abundant progress of reaction.
Preferably, further include being carried out to obtained product after being stirred to react under the conditions of 0-100 DEG C in step (1), (2) The method of purification processes, the purification processes is:Water quenching is added to go out reaction, organic phase is after acid, saturated common salt water washing, progress Dry, vacuum distillation processing, obtains product.
Preferably, in step (3), 2,4-dihydroxyacetophenone after step (1) hydroxyl protection and through step (2) hydroxyl The mole dosage ratio of 4- hydroxy benzaldehydes after protection is 1:1~1:2, ensure the complete progress of aldol reaction, obtains hydroxyl Aldehyde condensation products.
Preferably, further include to obtaining after the step of being stirred to react under the conditions of 25~100 DEG C in step (3) Product carries out purification processes, and the method for the purification processes is:After removing the solvent in product, acid solution is added dropwise to mixture pH= 6-7 extracts obtained mixture using dichloromethane, is concentrated to give Aldol Condensation Products, under slightly acidic condition, makes production Object is easier to detach with water-solubility impurity and be extracted to organic phase, ensures the yield and purity of Aldol Condensation Products, is follow-up Deprotection reaction is prepared.
Preferably, the acid solution is selected from least one of hydrochloric acid, phosphoric acid, sulfuric acid, for the post-processing of reaction, neutralizes body Alkali in system is convenient for the extraction and separation of product.
Preferably, in step (3), the reaction temperature being stirred to react be 25~50 DEG C, the reaction time be 10~for 24 hours, It is further preferred that in step (3), the reaction temperature being stirred to react is 25-30 DEG C, and reaction temperature is milder, safety Reliably, and ensure the abundant progress reacted.
Preferably, in step (4), the reaction temperature being stirred to react is 25~40 DEG C, and the reaction time is 3~6h, instead It answers temperature milder, securely and reliably, and ensures the abundant progress of reaction.
Preferably, in step (4), a concentration of 1mol/L of tetrahydrofuran solution of the tetrabutyl amine fluoride, as going to protect Reagent is protected, the removing of hydroxyl protection base is completed, obtains isoliquiritigenin.
Preferably, in step (4), the molar ratio of the Aldol Condensation Products and tetrabutyl amine fluoride is 1:2-2.5 ensures Blocking group completely removes.
Preferably, further include that will obtain after carrying out the step of deprotection is handled to the Aldol Condensation Products in step (4) The product arrived is mixed with ice water, after removing solvent, is extracted using dichloromethane, by extract liquor successively through hydrochloric acid, saturated salt solution After washing, dichloromethane is removed, isoliquiritigenin is obtained.
The synthetic method of isoliquiritigenin provided in an embodiment of the present invention, method is simple and practicable, and reaction condition is mild, safely may be used It leans on, raw material is easy to get, cheap, at low cost, using at least one of dimethyl tertiary butyl chlorosilane, tri isopropyl chlorosilane Hydroxyl protection is carried out to the 4- hydroxyls of 4- hydroxy benzaldehydes and 2,4-dihydroxyacetophenone, the risk that by-product generates is reduced, carries The yield of high isoliquiritigenin is suitble to industrialized production.
In order to better illustrate the synthetic method of isoliquiritigenin provided in an embodiment of the present invention, below by embodiment do into The illustration of one step.
Embodiment 1
A kind of synthetic method of isoliquiritigenin, specific synthesis step are as follows:
(1) the 4- hydroxy benzaldehydes of 12.2g and 14.3g imidazoles are added in round-bottomed flask, dichloromethane stirring is added Uniformly, system is down to 0-5 DEG C, is slowly dropped into 21.12g dimethyl tertiary butyl chlorosilanes, is then stirred at 25-30 DEG C, TLC It detects, reacts and finish after 6h, water, organic phase 1N salt acid elutions are added into system, then with after saturated common salt water washing, carry out Dry, vacuum distillation processing, obtains oil product 21.08g, yield 89%.
(2) 2,4-dihydroxyacetophenone of 13.71g and 17.02g imidazoles are added in round-bottomed flask, dichloromethane is added Alkane stirs evenly, and system is down to 0-5 DEG C, is slowly dropped into 22.60g dimethyl tertiary butyl chlorosilanes, is then stirred at 25-30 DEG C It mixes, water is added into system after stirring 5h in TLC detections, organic phase 1N salt acid elutions, then with after saturated common salt water washing, into Row drying, vacuum distillation processing, obtain solid product 22.64g, yield 85%;
(3) step (1) product 9.46g and step (2) product 10.66g are dissolved in 300mL ethyl alcohol, sodium hydroxide is added 16.01g stirs 18h in 25-30 DEG C, after reaction, dilute hydrochloric acid is added dropwise to subacidity, revolving removes solvent, uses dichloromethane Extraction, after organic phase drying, evaporated under reduced pressure obtains condensation product 15.9g, yield 82%;
(4) the product 9.70g of step (3) is added in 160mL tetrahydrofurans, the 1mol/L tetrabutyl fluorine of 40mL is added Change amine-THF solution, 30 DEG C of stirrings, TLC is detected, poured into reaction solution in ice water after 4h, and revolving removes organic solvent, dichloro Methane extract, organic phase 1N salt acid elutions, then with after saturated common salt water washing, be dried, vacuum distillation processing, obtain different Glycyrrhizin 4.77g, yield 93%.
Embodiment 2
A kind of synthetic method of isoliquiritigenin, specific synthesis step are as follows:
(1) the 4- hydroxy benzaldehydes of 4.88g are added in round-bottomed flask, after addition dichloromethane stirring and dissolving is complete, 10.84g diisopropylethylamine is added, system is cooled to 0-5 DEG C, is slowly dropped into 10.75g tri isopropyl chlorosilanes, then It is stirred at 25-30 DEG C, TLC detections reacts after 5h and finished, and are added water into system, organic phase 1N salt acid elutions, then with satisfying After brine It, organic phase drying, vacuum distillation removes solvent and obtains oil product 9.68g, yield 87%;
(2) 2,4-dihydroxyacetophenone of 4.56g is added in round-bottomed flask, it is complete that dichloromethane stirring and dissolving is added Afterwards, 9.68g diisopropylethylamine is added, system is cooled to 0-5 DEG C, is slowly dropped into 8.64g tri isopropyl chlorosilanes, then It is stirred at 25-30 DEG C, TLC detections, after stirring 4h, water, organic phase 1N salt acid elutions is added into system, then eaten with saturation After salt water washing, organic phase drying, vacuum distillation removes solvent and obtains solid product 7.58g, yield 82%;
(3) step (1) product 5.56g and step (2) product 6.16g are dissolved in 150mL ethyl alcohol, potassium hydroxide is added 11.20g stirs 12h in 25-30 DEG C and is after reaction spin-dried for solvent, dilute sulfuric acid is added dropwise to subacidity, is extracted with dichloromethane It takes, after organic phase drying, vacuum distillation removes solvent and obtains condensation product 9.08g, yield 80%;
(4) the product 5.68g of step (3) is added in 100mL tetrahydrofurans, the 1mol/L tetrabutyl fluorine of 20mL is added Change amine-THF solution, 30 DEG C of stirrings, TLC is detected, poured into reaction solution in ice water after 3h, and revolving removes solvent, dichloromethane Extraction, organic phase 1N salt acid elutions, then with after saturated common salt water washing, organic phase drying, vacuum distillation removes solvent, washes It washs, isoliquiritigenin 2.28g, yield 89% is obtained after dry.
The synthetic method of the isoliquiritigenin provided in the embodiment of the present invention, method is simple and practicable, and reaction condition is mild, safety Reliably, raw material is easy to get, of low cost, and the yield of isoliquiritigenin is higher, is suitble to industrialized production.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention Any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (10)

1. a kind of synthetic method of isoliquiritigenin, it is characterised in that:Include the following steps:
(1) 2,4-dihydroxyacetophenone is provided, after the 2,4-dihydroxyacetophenone is mixed with alkaline reagent, organic solvent, Hydroxy protecting agent is added, is stirred to react under the conditions of 0-100 DEG C, 4 hydroxyls of the 2,4-dihydroxyacetophenone are carried out Hydroxyl protection;
(2) 4- hydroxy benzaldehydes are provided, after the 4- hydroxy benzaldehydes are mixed with alkaline reagent, organic solvent, hydroxyl is added Reagent is protected, is stirred to react under the conditions of 0-100 DEG C, hydroxyl protection is carried out to the 4- hydroxy benzaldehydes;
It (3) will be through the 2,4- resacetophenones after step (1) hydroxyl protection, the 4- hydroxy benzenes after step (2) hydroxyl protection Formaldehyde mixes in organic solvent, and lewis base is added, is stirred to react under the conditions of 25~100 DEG C, obtains Aldol Condensation Products;
(4) Aldol Condensation Products described in step (3) are added in organic solvent, the tetrahydrofuran of tetrabutyl amine fluoride is added Solution, is stirred to react under the conditions of 10~100 DEG C, and deprotection processing is carried out to the Aldol Condensation Products, is prepared different sweet Careless element;
Wherein, step (1), the hydroxy protecting agent described in step (2) are independently chosen from dimethyl tertiary butyl chlorosilane, three isopropyls At least one of base chlorosilane.
2. the synthetic method of isoliquiritigenin as described in claim 1, it is characterised in that:The alkaline reagent is selected from imidazoles, two At least one of wopropyl ethyl amine;And/or
The lewis base is selected from least one of sodium hydroxide, potassium hydroxide, sodium hydride, sodium methoxide, sodium ethoxide;And/or
The organic solvent is selected from methanol, ethyl alcohol, N,N-dimethylformamide, tetrahydrofuran, dichloromethane, isopropyl ether, diformazan At least one of base sulfoxide.
3. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (1), the stirring is anti- The reaction temperature answered is 0~50 DEG C, and the reaction time is 4~6h.
4. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (2), the stirring is anti- The reaction temperature answered is 0~50 DEG C, and the reaction time is 3~5h.
5. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (3), through step (1) hydroxyl The mole dosage ratio of 2,4- resacetophenones after base protection and the 4- hydroxy benzaldehydes after step (2) hydroxyl protection is 1: 1~1:2.
6. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (3), at 25~100 DEG C Under the conditions of after the step of being stirred to react, further include that purification processes, the method for the purification processes are carried out to obtained product For:After removing the solvent in product, acid solution is added dropwise to mixture pH=6-7, obtained mixture is carried out using dichloromethane Extraction, is concentrated to give Aldol Condensation Products.
7. the synthetic method of isoliquiritigenin as claimed in claim 6, it is characterised in that:The acid solution is selected from hydrochloric acid, phosphoric acid, sulphur At least one of acid.
8. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (3), the stirring is anti- The reaction temperature answered be 25~50 DEG C, the reaction time be 10~for 24 hours.
9. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (4), the stirring is anti- The reaction temperature answered is 25~40 DEG C, and the reaction time is 3~6h.
10. the synthetic method of isoliquiritigenin as claimed in claim 1 or 2, it is characterised in that:In step (4), to the aldol Further include that the product that will be obtained is mixed with ice water after condensation product carries out the step of deprotection processing, after removing solvent, using two Chloromethanes extracts, and by extract liquor successively after hydrochloric acid, saturated common salt water washing, removes dichloromethane, obtains isoliquiritigenin.
CN201810373979.5A 2018-04-24 2018-04-24 A kind of synthetic method of isoliquiritigenin Pending CN108440264A (en)

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Publication number Priority date Publication date Assignee Title
CN109400567A (en) * 2018-12-05 2019-03-01 华中药业股份有限公司 A method of synthesis glycyrrhizin
CN109705238A (en) * 2018-12-19 2019-05-03 江苏乘鹰新材料股份有限公司 A kind of low acetone release Low mobility photoinitiator and its preparation method and application
CN110559958A (en) * 2019-09-12 2019-12-13 凯莱英医药化学(阜新)技术有限公司 device for continuously preparing 2, 6-dihydroxy benzaldehyde and application thereof

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CN101648856A (en) * 2009-09-08 2010-02-17 东北林业大学 Method for synthesizing isoliquiritigenin

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CN101353299A (en) * 2008-09-11 2009-01-28 武汉大学 Method for synthesizing isoliquirtigenin
CN101648856A (en) * 2009-09-08 2010-02-17 东北林业大学 Method for synthesizing isoliquiritigenin

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109400567A (en) * 2018-12-05 2019-03-01 华中药业股份有限公司 A method of synthesis glycyrrhizin
CN109705238A (en) * 2018-12-19 2019-05-03 江苏乘鹰新材料股份有限公司 A kind of low acetone release Low mobility photoinitiator and its preparation method and application
CN110559958A (en) * 2019-09-12 2019-12-13 凯莱英医药化学(阜新)技术有限公司 device for continuously preparing 2, 6-dihydroxy benzaldehyde and application thereof

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