WO2021238839A1 - 一种(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法 - Google Patents
一种(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法 Download PDFInfo
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- WO2021238839A1 WO2021238839A1 PCT/CN2021/095446 CN2021095446W WO2021238839A1 WO 2021238839 A1 WO2021238839 A1 WO 2021238839A1 CN 2021095446 W CN2021095446 W CN 2021095446W WO 2021238839 A1 WO2021238839 A1 WO 2021238839A1
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- WO
- WIPO (PCT)
- Prior art keywords
- isopropoxy
- methyl
- product
- phenylisopropyl
- reaction
- Prior art date
Links
- ZTKVAUXUXKKVKM-UHFFFAOYSA-N 2-methyl-1-(2-methyl-4-propan-2-yloxyphenyl)propan-1-one Chemical compound C(C)(C)OC1=CC(=C(C=C1)C(C(C)C)=O)C ZTKVAUXUXKKVKM-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- -1 isopropyl magnesium halide Chemical class 0.000 claims abstract description 32
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 claims abstract description 11
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 claims abstract description 9
- 239000000047 product Substances 0.000 claims description 42
- 239000000706 filtrate Substances 0.000 claims description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000012074 organic phase Substances 0.000 claims description 12
- 239000011541 reaction mixture Substances 0.000 claims description 12
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- IUYHWZFSGMZEOG-UHFFFAOYSA-M magnesium;propane;chloride Chemical compound [Mg+2].[Cl-].C[CH-]C IUYHWZFSGMZEOG-UHFFFAOYSA-M 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical group [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 8
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 8
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012973 diazabicyclooctane Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- ZNNZYHKDIALBAK-UHFFFAOYSA-M potassium thiocyanate Chemical group [K+].[S-]C#N ZNNZYHKDIALBAK-UHFFFAOYSA-M 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- LVKCSZQWLOVUGB-UHFFFAOYSA-M magnesium;propane;bromide Chemical compound [Mg+2].[Br-].C[CH-]C LVKCSZQWLOVUGB-UHFFFAOYSA-M 0.000 claims description 4
- 229940100630 metacresol Drugs 0.000 claims description 4
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 4
- 235000011181 potassium carbonates Nutrition 0.000 claims description 4
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 claims description 4
- DGMOBVGABMBZSB-UHFFFAOYSA-N 2-methylpropanoyl chloride Chemical group CC(C)C(Cl)=O DGMOBVGABMBZSB-UHFFFAOYSA-N 0.000 claims description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 3
- 239000011736 potassium bicarbonate Substances 0.000 claims description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- XGITVAYMIKUXIN-UHFFFAOYSA-M magnesium;propane;iodide Chemical compound [Mg+2].[I-].C[CH-]C XGITVAYMIKUXIN-UHFFFAOYSA-M 0.000 claims description 2
- 230000020477 pH reduction Effects 0.000 claims description 2
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 claims description 2
- 239000011949 solid catalyst Substances 0.000 claims description 2
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical group O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 claims description 2
- 238000005292 vacuum distillation Methods 0.000 claims description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 claims 1
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims 1
- 150000003927 aminopyridines Chemical class 0.000 claims 1
- 239000001294 propane Substances 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 7
- 230000002378 acidificating effect Effects 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 48
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 22
- 239000012141 concentrate Substances 0.000 description 17
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 11
- 239000000543 intermediate Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 8
- 238000005863 Friedel-Crafts acylation reaction Methods 0.000 description 5
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 4
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 125000004093 cyano group Chemical group *C#N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 229940116357 potassium thiocyanate Drugs 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- 239000007818 Grignard reagent Substances 0.000 description 2
- 239000005798 Isofetamid Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000855 fungicidal effect Effects 0.000 description 2
- 239000000417 fungicide Substances 0.000 description 2
- 150000004795 grignard reagents Chemical class 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- WMKZDPFZIZQROT-UHFFFAOYSA-N isofetamid Chemical compound CC1=CC(OC(C)C)=CC=C1C(=O)C(C)(C)NC(=O)C1=C(C)C=CS1 WMKZDPFZIZQROT-UHFFFAOYSA-N 0.000 description 2
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 2
- MNWBNISUBARLIT-UHFFFAOYSA-N sodium cyanide Chemical compound [Na+].N#[C-] MNWBNISUBARLIT-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- NAMYKGVDVNBCFQ-UHFFFAOYSA-N 2-bromopropane Chemical compound CC(C)Br NAMYKGVDVNBCFQ-UHFFFAOYSA-N 0.000 description 1
- QXKMWFFBWDHDCB-UHFFFAOYSA-N 3-methyl-1,4-diazabicyclo[2.2.2]octane Chemical compound C1CN2C(C)CN1CC2 QXKMWFFBWDHDCB-UHFFFAOYSA-N 0.000 description 1
- 241001465180 Botrytis Species 0.000 description 1
- 240000002791 Brassica napus Species 0.000 description 1
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 1
- 229940124186 Dehydrogenase inhibitor Drugs 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 240000008415 Lactuca sativa Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 239000012359 Methanesulfonyl chloride Substances 0.000 description 1
- 241000221662 Sclerotinia Species 0.000 description 1
- 102000019259 Succinate Dehydrogenase Human genes 0.000 description 1
- 108010012901 Succinate Dehydrogenase Proteins 0.000 description 1
- 241000219094 Vitaceae Species 0.000 description 1
- OZQXEOSNFMMMRD-UHFFFAOYSA-M [Cl-].CC(C)[Mg+].C1CCOC1 Chemical compound [Cl-].CC(C)[Mg+].C1CCOC1 OZQXEOSNFMMMRD-UHFFFAOYSA-M 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- FCVPQJRQZFMXTM-UHFFFAOYSA-N amino thiocyanate Chemical compound NSC#N FCVPQJRQZFMXTM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 235000021021 grapes Nutrition 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- ULYZAYCEDJDHCC-UHFFFAOYSA-N isopropyl chloride Chemical compound CC(C)Cl ULYZAYCEDJDHCC-UHFFFAOYSA-N 0.000 description 1
- FMKOJHQHASLBPH-UHFFFAOYSA-N isopropyl iodide Chemical compound CC(C)I FMKOJHQHASLBPH-UHFFFAOYSA-N 0.000 description 1
- QARBMVPHQWIHKH-UHFFFAOYSA-N methanesulfonyl chloride Chemical compound CS(Cl)(=O)=O QARBMVPHQWIHKH-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/004—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with organometalhalides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C255/53—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing cyano groups and hydroxy groups bound to the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C255/54—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing cyano groups and etherified hydroxy groups bound to the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
- C07C49/84—Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Definitions
- the invention belongs to the field of organic chemistry, and specifically relates to a preparation method of (4-isopropoxy-2-methyl)phenylisopropyl ketone.
- the target compound (4-isopropoxy-2-methyl) phenylisopropyl ketone is an intermediate of the fungicide isofetamid.
- Isofetamid is the latest succinate dehydrogenase inhibitor (SDHI) broad-spectrum fungicide developed by Ishihara. It has both protective, systemic and therapeutic effects. It can adversely affect the respiration of plants and fungi. It is used to control foliage and soil. It is used to prevent and control various diseases caused by Botrytis and Sclerotinia on grapes, lettuce, rapeseed, dwarf berries and turf.
- WO2006016708 discloses a chemical synthesis method of intermediate formula (V) (4-hydroxy-2-methyl)phenylisopropyl ketone, and the reaction process is as follows:
- the method uses the formula (I) m-cresol and isobutyryl chloride as raw materials, aluminum trichloride as a catalyst, and carbon disulfide as a solvent.
- the intermediate formula (V) is obtained through post-treatment.
- the intermediate formula (V) can be reacted with haloisopropane to obtain the product formula (IV).
- the selectivity of the reaction is very poor, the yield is low, and the reaction will produce a large amount of acidic wastewater, which is not environmentally friendly.
- the pure product of formula (V) is obtained by column chromatography, which is not conducive to industrialization. Production.
- formula (V) is synthesized through Friedel-Crafts acylation reaction, and then formula (IV) is synthesized through etherification.
- problems of low yield, large amount of three wastes, and high cost There are problems of low yield, large amount of three wastes, and high cost.
- the development is suitable for industrial applications, simple, A new synthesis method that is low-cost, high-yield, and environmentally friendly, so as to overcome the shortcomings of the prior art, will be very desirable.
- the present invention provides a simple, effective, easy-to-operate, and environment-friendly preparation method of (4-isopropoxy-2-methyl)phenylisopropyl ketone.
- the purity of (4-isopropoxy-2-methyl)phenylisopropyl ketone prepared by the method described in this application is more than 99%, and the yield based on m-cresol is more than 79%.
- a preparation method of (4-isopropoxy-2-methyl) phenyl isopropyl ketone includes the following steps:
- the catalyst is one or more of fuming sulfuric acid, methanesulfonyl chloride, chlorosulfonic acid or sulfonyl chloride.
- the catalyst is attached to the silica or alumina carrier to form a solid catalyst that can be recycled and reused.
- the catalyst is silica-supported chlorosulfonic acid or silica-supported sulfonyl chloride.
- the thiocyanate is one or more of KSCN, NaSCN, and NH 4 SCN.
- thiocyanate is KSCN.
- step (1) the reaction temperature is 50-120° C., and the reaction time is 8-16 h.
- the alkali is one or more of potassium carbonate, sodium carbonate, potassium bicarbonate, sodium bicarbonate, potassium hydroxide or sodium hydroxide.
- the base is potassium carbonate.
- the catalyst is pyridine, 4-dimethylaminopyridine, DABCO (chemical name: 1,4-diazabicyclo[2.2.2]octane; alias: triethylenediamine , Triethylenediamine, English name: 1,4-Diazabicyclo[2.2.2]octane; triethylenediamine), Me-DABCO (chemical name: 2-methyl-1,4-diazabicyclo[2.2.2 ] Octane) or one or more of tetramethylammonium hydroxide.
- DABCO chemical name: 1,4-diazabicyclo[2.2.2]octane
- Triethylenediamine Triethylenediamine
- English name 1,4-Diazabicyclo[2.2.2]octane
- Me-DABCO chemical name: 2-methyl-1,4-diazabicyclo[2.2.2 ] Octane
- the catalyst is tetramethylammonium hydroxide.
- the halogenated isopropane is one or more of chloroisopropane, bromoisopropane, or iodoisopropane.
- halogenated isopropane is chloroisopropane.
- step (2) the reaction temperature is 25-80°C, and the reaction time is 1-10 hours.
- the isopropyl magnesium halide is one or more of isopropyl magnesium chloride, isopropyl magnesium bromide or isopropyl magnesium iodide.
- isopropyl magnesium halide is isopropyl magnesium chloride.
- reaction temperature of the product B and isopropyl magnesium halide is 45-70°C, and the reaction time is 1-5 hours.
- step (3) the specific operation of the acidification is: adding dropwise the reaction mixture with a temperature of 15-40° C. to 5-36% hydrochloric acid and stirring for 30-90 min.
- step (3) the heating temperature is 80-150°C; the temperature of the vacuum distillation is 134-138°C, and the pressure is 1-5 Torr.
- the preparation method of (4-isopropoxy-2-methyl) phenyl isopropyl ketone of the present invention specifically includes: reacting m-cresol and thiocyanate under the action of a catalyst, filtering to obtain a filtrate and recovering Catalyst, the filtrate is concentrated and crystallized to obtain product A; the product A and haloisopropane are reacted under the action of alkali and catalyst, and the filtrate is obtained after filtration, and the filtrate is concentrated to obtain product B; B is reacted with isopropyl magnesium halide to obtain a reaction mixture; the reaction mixture is acidified and left to stand for layering to obtain an organic phase; the organic phase is desolvated to obtain a concentrate, and the concentrate is reduced Pressure distillation to obtain the (4-isopropoxy-2-methyl)phenylisopropyl ketone.
- the purity of (4-isopropoxy-2-methyl)phenylisopropyl ketone prepared by the method described in this application is more than
- the invention uses meta-cresol and thiocyanate to introduce the cyano group of product A under the action of a catalyst, avoids the use of toxic reagents such as CuCN, KCN or NaCN, reduces the reaction temperature, and is simple to operate.
- the present invention utilizes the reaction of product B with isopropyl magnesium halide, that is, the introduction of isopropyl group through the reaction of Grignard reagent and cyano group, instead of the conventional Friedel-Crafts acylation reaction method ,
- the entire reaction process effectively avoids a large amount of acidic wastewater, improves the reaction yield, and reduces a series of environmental impacts caused by post-treatment;
- the present invention is simpler in operation and high in yield than the existing Friedel-Crafts acylation route. There is less waste water, which is more suitable for industrial production.
- This embodiment provides a method for preparing (4-isopropoxy-2-methyl)phenylisopropyl ketone:
- This embodiment provides a method for preparing (4-isopropoxy-2-methyl)phenylisopropyl ketone:
- This embodiment provides a method for preparing (4-isopropoxy-2-methyl)phenylisopropyl ketone:
- This embodiment provides a method for preparing (4-isopropoxy-2-methyl)phenylisopropyl ketone:
- this application uses meta-cresol and thiocyanate to introduce the cyano group of product A under the action of a catalyst, avoiding the use of toxic reagents such as CuCN, KCN or NaCN, lowering the reaction temperature, simple operation, and After the catalyst is washed with solvent, it can be recycled and reused, which reduces the cost; the product B is used to react with isopropyl magnesium halide, that is, the isopropyl group is introduced through the reaction of Grignard reagent and cyano group, instead of the conventional Friedel-Crafts acylation reaction Method, the entire reaction process effectively avoids a large amount of acidic wastewater, improves the reaction yield, and reduces a series of environmental impacts caused by post-treatment; compared with the existing Friedel-Crafts acylation route, the operation is simple, the yield is high, and the wastewater It produces less and is more suitable for industrial production.
- toxic reagents such as CuCN, KCN or NaCN
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
Description
Claims (10)
- 一种(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,包括如下步骤:(1)将间甲酚和硫氰酸盐在催化剂作用下反应,过滤后得滤液并回收催化剂,将所述滤液进行浓缩结晶得到产物A;(2)将所述产物A和卤代异丙烷在碱和催化剂作用下反应,过滤后得滤液,将所述滤液进行浓缩得到产物B;(3)将所述产物B与异丙基卤化镁反应,得到反应混合物;将所述反应混合物经酸化、静置分层后得到有机相;将所述有机相依次进行加热、减压蒸馏,得到所述(4-异丙氧基-2-甲基)苯基异丙基酮。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(1)中,所述催化剂为发烟硫酸、甲磺酰氯、氯磺酸或磺酰氯中的一种或几种。
- 根据权利要求2所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,所述催化剂附着于二氧化硅或三氧化铝载体上形成可回收循环使用的固态催化剂。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(1)中,所述硫氰酸盐为KSCN、NaSCN、NH 4SCN中的一种或多种;所述反应温度为50-120℃,所述反应时间为8-16h。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(2)中,所述碱为碳酸钾、碳酸钠、碳酸氢钾、碳酸氢钠、氢氧化钾或氢氧化钠中的一种或多种。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(2)中,所述催化剂为吡啶、4-二甲氨基吡啶、DABCO、Me-DABCO或四甲基氢氧化铵中的一种或多种。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(2)中,所述卤代异丙烷为氯代异丙烷、溴代异丙烷或碘代异丙烷中的一种或多种;所述反应温度为25-80℃,所述反应时间为1-10小时。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(3)中,所述异丙基卤化镁为异丙基氯化镁、异丙基溴化镁或异丙基碘化镁中的一种或多种;所述产物B与异丙基卤化镁反应的温度为45-70℃,所述反应时间为1-5小时。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(3)中,所述酸化的具体操作为:将温度为15-40℃的反应混合物滴加至5-36%盐酸中搅拌30-90min。
- 根据权利要求1所述的(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法,其特征在于,步骤(3)中,所述加热温度为80-150℃;所述减压蒸馏的温度为134-138℃,压力为1-5Torr。
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IL298598A IL298598A (en) | 2020-05-28 | 2021-05-24 | Preparation method of (4-isopropoxy-2-methyl)phenyl isopropyl ketone |
US17/928,018 US20230212101A1 (en) | 2020-05-28 | 2021-05-24 | Preparation method for (4-isopropoxy-2-methyl)phenyl isopropyl ketone |
BR112022024231A BR112022024231A2 (pt) | 2020-05-28 | 2021-05-24 | Método de preparação de (4-isopropoxi-2-metil) fenil isopropil cetona |
EP21814338.6A EP4159713A4 (en) | 2020-05-28 | 2021-05-24 | PROCESS FOR PREPARING (4-ISOPROPOXY-2-METHYL) PHENYLISOPROPYL KETONE |
KR1020227045831A KR20230019141A (ko) | 2020-05-28 | 2021-05-24 | (4-이소프로폭시-2-메틸)페닐 이소프로필 케톤의 제조 방법 |
JP2022573261A JP2023527071A (ja) | 2020-05-28 | 2021-05-24 | (4-イソプロポキシ-2-メチル)フェニルイソプロピルケトンの調製法 |
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KR20230019141A (ko) | 2023-02-07 |
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JP2023527071A (ja) | 2023-06-26 |
EP4159713A1 (en) | 2023-04-05 |
CN111548257A (zh) | 2020-08-18 |
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