WO2014071596A1 - 一种3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的制备方法 - Google Patents
一种3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的制备方法 Download PDFInfo
- Publication number
- WO2014071596A1 WO2014071596A1 PCT/CN2012/084347 CN2012084347W WO2014071596A1 WO 2014071596 A1 WO2014071596 A1 WO 2014071596A1 CN 2012084347 W CN2012084347 W CN 2012084347W WO 2014071596 A1 WO2014071596 A1 WO 2014071596A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reaction
- methoxy
- preparation
- solvent
- hydroxyphenylacetic acid
- Prior art date
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims abstract description 94
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 83
- CCVYRRGZDBSHFU-UHFFFAOYSA-N (2-hydroxyphenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC=C1O CCVYRRGZDBSHFU-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 56
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 43
- PYOKUURKVVELLB-UHFFFAOYSA-N trimethyl orthoformate Chemical compound COC(OC)OC PYOKUURKVVELLB-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002904 solvent Substances 0.000 claims abstract description 34
- 239000003054 catalyst Substances 0.000 claims abstract description 15
- 238000004128 high performance liquid chromatography Methods 0.000 claims abstract description 13
- 238000006482 condensation reaction Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 6
- ACZGCWSMSTYWDQ-UHFFFAOYSA-N 3h-1-benzofuran-2-one Chemical compound C1=CC=C2OC(=O)CC2=C1 ACZGCWSMSTYWDQ-UHFFFAOYSA-N 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- RHDGNLCLDBVESU-UHFFFAOYSA-N but-3-en-4-olide Chemical compound O=C1CC=CO1 RHDGNLCLDBVESU-UHFFFAOYSA-N 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000004939 coking Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000000859 sublimation Methods 0.000 abstract description 3
- 230000008022 sublimation Effects 0.000 abstract description 3
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000004821 distillation Methods 0.000 description 9
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 8
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 8
- IWYDHOAUDWTVEP-UHFFFAOYSA-N mandelic acid Chemical compound OC(=O)C(O)C1=CC=CC=C1 IWYDHOAUDWTVEP-UHFFFAOYSA-N 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 238000010533 azeotropic distillation Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 4
- 239000008096 xylene Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- AVTASQJTDUCKMG-UHFFFAOYSA-L disodium;sulfate;pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O AVTASQJTDUCKMG-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic 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
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/82—Benzo [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
- C07D307/83—Oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic 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
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/82—Benzo [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
Definitions
- the invention relates to a preparation method of a compound, in particular to a preparation method of 3_( ⁇ -methoxy)methenylbenzofuran-2(3 ⁇ )-one, belonging to the field of chemical synthesis.
- the production of 3-( ⁇ -methoxy)-methylenylbenzofuran-2(3 ⁇ )-one is carried out by a solvent-free method, for example:
- a solvent-free method for example:
- o-hydroxyphenylacetic acid is mixed with a solvent and a catalyst to form a reaction.
- the ester (benzofuranone) is recovered and the solvent is removed.
- an excess of the raw material acetic anhydride and trimethyl orthoformate are added.
- the reaction equation is as follows:
- An object of the present invention is to provide a process for producing a 3-( ⁇ -methoxy)methylenylbenzofuran-2(3 ⁇ )-one having a high yield.
- the solvent to be used is an aromatic hydrocarbon substance such as toluene, xylene, chlorobenzene or the like; and the catalyst may be sulfuric acid, p-toluenesulfonic acid, silica gelsulfonic acid, acetic acid or the like.
- the solvent present in the second step reaction may be the solvent used in the first step reaction, the solvent which is directly used as the second step reaction without being recovered, or the solvent may be recovered and removed after the first condensation reaction.
- a solvent suitable for the second-step reaction the solvent suitable for the second-step reaction is clear in the art, and is a solvent having a boiling point higher than the reaction temperature and not participating in the second-step reaction, such as aromatic hydrocarbon toluene, xylene, and tri- Toluene, chlorobenzene, etc.
- the solvent preferably used in the first step reaction is toluene.
- the second step reaction preferably uses the same solvent toluene which is removed without recovery in the first step reaction. Still more preferably, the solvent toluene is used in an amount of from 50% to 500% by weight based on the amount of o-hydroxyphenylacetic acid.
- the catalyst in the first step reaction is preferably a silica gel sulfonic acid or acetic acid.
- the above o-hydroxyphenylacetic acid: toluene: acetic anhydride: trimethyl orthoformate is 1.0: 4.0: 2.2: 1.1, in terms of molar ratio.
- the first step reaction is to weigh the o-hydroxyphenylacetic acid, the solvent and the catalyst, adjust the temperature of the oil bath to boil the material in the reactor, azeotrope distilled to the system, no more water is distilled off, sampling, HPLC detection of the neighbor
- the content of hydroxyphenylacetic acid is less than 1% by weight.
- the second step reaction is to add trimethyl orthoformate and acetic anhydride in the above ratio, heat to 105-115 ° C, collect the fraction at a temperature not higher than 70 ° C, and no longer distillate after 12 hours. Distillate, recover methyl acetate, distillate, concentrate the reaction under reduced pressure, recover the solvent, and return to the reaction system The ring is utilized, methanol is added to the reaction product, mixed, cooled, crystallized, filtered, and dried to obtain a product.
- a method for preparing 3-( ⁇ -methoxy)-methylenylbenzofuran-2(3H)-one is carried out according to the following procedure,
- First step reaction Mix o-hydroxyphenylacetic acid, toluene and acetic acid, adjust the temperature of the oil bath to boil the material in the reactor, azeotrope distilled to the system, no more water is distilled out, sample, HPLC to detect the content of o-hydroxyphenylacetic acid Is less than 1 wt%;
- the second step reaction adding trimethyl orthoformate and acetic anhydride to the system obtained in the first step reaction, heating to 105-115 ° C, collecting the fraction at a temperature not higher than 70 ° C, no more fraction after 12 hours Distilling, rectifying and recovering methyl acetate, distilling, concentrating the reaction solution under reduced pressure, recovering the solvent, returning to the reaction system for recycling, adding methanol to the reaction product, mixing, cooling, crystallization, filtration, drying, 3-( ⁇ -methoxy)-methylenylbenzofuran-2(3 ⁇ )-one, the product content is more than 97% (by mass percentage), the yield is more than 90% (with o-hydroxyphenylacetic acid) Count)
- the preparation method of the invention greatly reduces the consumption of raw materials; after the reaction, only 3-( ct -methoxy)-methylenylbenzofuran-2(3 ⁇ )-one is contained in the kettle, and only acetic acid and toluene are used.
- the recovery of these two substances does not require high vacuum and high temperature, so there is no coking and sublimation of the product, and the recovery process is simple and convenient.
- the preparation method of the invention has a high yield of more than 90% (calculated as o-hydroxyphenylacetic acid). The 5% or more (by mass percent) of the obtained 3-( ⁇ -methoxy)-methylenyl benzofuran-2(3 ⁇ )-one.
- hydroxyphenylacetic acid 60. 8g (0.4 mol), 170mL toluene and 98% sulfuric acid 5mL, adjust the oil bath temperature to 125 ° C, azeotropic distillation to the system no longer water evaporation, sampling, HPLC detection of neighbors
- the content of hydroxyphenylacetic acid is 0. 28wt%, cooled, washed successively with 5% sodium bicarbonate solution and water to neutral, dried with sodium sulfate pentahydrate, filtered, and the filtrate is placed in a column with stirring, thermometer and thorn type distillation column.
- Example 1 On the basis of Example 1, the inventors further selected a solvent for synthesizing benzofuranone by dehydration condensation reaction of o-hydroxyphenylacetic acid in the first step reaction to other aromatic hydrocarbons such as xylene or chlorobenzene.
- the catalyst also uses sulfuric acid, p-toluenesulfonic acid, silica gel sulfonic acid or acetic acid, etc., using sulfuric acid and p-toluenesulfonic acid, the catalyst is removed by washing with water and alkali after the reaction, and then the trace amount of water is removed, and finally, B is added.
- the acid anhydride and trimethyl orthoformate are subjected to synthesis of the target product; using silica gel sulfonic acid as a catalyst, the filtrate is directly removed by filtration after completion of the reaction, and then the synthesis of the target is carried out; the subsequent reaction is carried out directly without using acetic acid.
- the inventors After the first condensation reaction, the inventors also adopt the solvent recovery of the first step, and add other solvents suitable for the second step reaction, such as xylene, trimethylbenzene or chlorobenzene of aromatic hydrocarbons, first, first
- solvents suitable for the second step reaction such as xylene, trimethylbenzene or chlorobenzene of aromatic hydrocarbons
- first first
- the total amount of solvent used in the two steps is from 50% to 500% of the amount of o-hydroxyphenylacetic acid, in terms of molar ratio.
- the yield is more than 90% (based on o-hydroxyphenylacetic acid), and the obtained 3-( ⁇ -methoxy)-methylenylbenzofuran-2(3 ⁇ )-one is detected by HPLC. Up to 97.5% or more (by mass percent).
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2012/084347 WO2014071596A1 (zh) | 2012-11-08 | 2012-11-08 | 一种3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的制备方法 |
BR112014015089A BR112014015089A2 (pt) | 2012-11-08 | 2012-11-08 | processo para a preparação de 3-(alfa-metóxi) metileno benzofurano-2 (3h) -cetona |
Applications Claiming Priority (1)
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---|---|---|---|
PCT/CN2012/084347 WO2014071596A1 (zh) | 2012-11-08 | 2012-11-08 | 一种3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的制备方法 |
Publications (1)
Publication Number | Publication Date |
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WO2014071596A1 true WO2014071596A1 (zh) | 2014-05-15 |
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PCT/CN2012/084347 WO2014071596A1 (zh) | 2012-11-08 | 2012-11-08 | 一种3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的制备方法 |
Country Status (2)
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BR (1) | BR112014015089A2 (zh) |
WO (1) | WO2014071596A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109651316A (zh) * | 2019-01-24 | 2019-04-19 | 安徽广信农化股份有限公司 | 一种甲氧基苯并呋喃酮的分离提纯工艺 |
CN109651315A (zh) * | 2019-01-24 | 2019-04-19 | 安徽广信农化股份有限公司 | 一种甲氧基苯并呋喃酮的合成工艺 |
CN111170972A (zh) * | 2019-12-28 | 2020-05-19 | 安徽中羰碳一工业技术有限责任公司 | 一种一步法合成苯并呋喃酮的方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102241651A (zh) * | 2011-05-25 | 2011-11-16 | 江苏七洲绿色化工股份有限公司 | 一种嘧菌酯中间体的制备方法 |
CN102417498A (zh) * | 2011-08-24 | 2012-04-18 | 重庆紫光化工股份有限公司 | 3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的合成方法 |
-
2012
- 2012-11-08 WO PCT/CN2012/084347 patent/WO2014071596A1/zh active Application Filing
- 2012-11-08 BR BR112014015089A patent/BR112014015089A2/pt not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102241651A (zh) * | 2011-05-25 | 2011-11-16 | 江苏七洲绿色化工股份有限公司 | 一种嘧菌酯中间体的制备方法 |
CN102417498A (zh) * | 2011-08-24 | 2012-04-18 | 重庆紫光化工股份有限公司 | 3-(α-甲氧基)甲烯基苯并呋喃-2(3H)-酮的合成方法 |
Non-Patent Citations (2)
Title |
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MIAO, CHENGPING: "Synthesis and Process Optimization of Azoxystrobin", CHINA MASTER'S THESES FULL-TEXT DATABASE (SCIENCE-ENGINEERING (A)), no. 3, 2004, pages 1 - 26 * |
ZHOU, LINFANG ET AL.: "Optimization for the Synthesis of 3-(a-Methoxy)methylenebenzo-furan-2(3H)-one", CHINESE JOURNAL OF PESTICIDES, vol. 43, no. 9, September 2004 (2004-09-01), pages 414 - 416 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109651316A (zh) * | 2019-01-24 | 2019-04-19 | 安徽广信农化股份有限公司 | 一种甲氧基苯并呋喃酮的分离提纯工艺 |
CN109651315A (zh) * | 2019-01-24 | 2019-04-19 | 安徽广信农化股份有限公司 | 一种甲氧基苯并呋喃酮的合成工艺 |
CN111170972A (zh) * | 2019-12-28 | 2020-05-19 | 安徽中羰碳一工业技术有限责任公司 | 一种一步法合成苯并呋喃酮的方法 |
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