EP4028390A1 - Improved process for preparing epoxides from aldehydes or ketones - Google Patents
Improved process for preparing epoxides from aldehydes or ketonesInfo
- Publication number
- EP4028390A1 EP4028390A1 EP20775207.2A EP20775207A EP4028390A1 EP 4028390 A1 EP4028390 A1 EP 4028390A1 EP 20775207 A EP20775207 A EP 20775207A EP 4028390 A1 EP4028390 A1 EP 4028390A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- sulfonium salt
- ketone
- compound
- iii
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000002576 ketones Chemical class 0.000 title claims abstract description 31
- 150000001299 aldehydes Chemical class 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 150000002118 epoxides Chemical class 0.000 title claims abstract 5
- 238000000034 method Methods 0.000 claims abstract description 39
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 35
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 24
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- -1 n-octyl Chemical group 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- VAYGXNSJCAHWJZ-UHFFFAOYSA-N dimethyl sulfate Chemical compound COS(=O)(=O)OC VAYGXNSJCAHWJZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 5
- 239000002585 base Substances 0.000 claims description 5
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- GZUXJHMPEANEGY-UHFFFAOYSA-N bromomethane Chemical compound BrC GZUXJHMPEANEGY-UHFFFAOYSA-N 0.000 claims description 4
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 claims description 2
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 claims description 2
- 229940102396 methyl bromide Drugs 0.000 claims description 2
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 description 27
- 150000002924 oxiranes Chemical class 0.000 description 13
- 239000000203 mixture Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- ABUPWXCYFWRZKL-UHFFFAOYSA-N 1-(methyldisulfanyl)butane Chemical compound CCCCSSC ABUPWXCYFWRZKL-UHFFFAOYSA-N 0.000 description 8
- FOJGPFUFFHWGFQ-UHFFFAOYSA-N n-butylmethyl sulfide Natural products CCCCCSC FOJGPFUFFHWGFQ-UHFFFAOYSA-N 0.000 description 8
- 238000003756 stirring Methods 0.000 description 6
- 239000012074 organic phase Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000008346 aqueous phase Substances 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- UFNOUKDBUJZYDE-UHFFFAOYSA-N 2-(4-chlorophenyl)-3-cyclopropyl-1-(1H-1,2,4-triazol-1-yl)butan-2-ol Chemical compound C1=NC=NN1CC(O)(C=1C=CC(Cl)=CC=1)C(C)C1CC1 UFNOUKDBUJZYDE-UHFFFAOYSA-N 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- 238000006942 Corey-Chaykovsky ring formation reaction Methods 0.000 description 2
- 239000005757 Cyproconazole Substances 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000006735 epoxidation reaction Methods 0.000 description 2
- 238000005648 named reaction Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- QLAJNZSPVITUCQ-UHFFFAOYSA-N 1,3,2-dioxathietane 2,2-dioxide Chemical compound O=S1(=O)OCO1 QLAJNZSPVITUCQ-UHFFFAOYSA-N 0.000 description 1
- KJWHJDGMOQJLGF-UHFFFAOYSA-N 1-methylsulfanyldodecane Chemical compound CCCCCCCCCCCCSC KJWHJDGMOQJLGF-UHFFFAOYSA-N 0.000 description 1
- LZRXQHHKXDXOIC-UHFFFAOYSA-N 1-methylsulfanylhexane Chemical compound CCCCCCSC LZRXQHHKXDXOIC-UHFFFAOYSA-N 0.000 description 1
- SYURNNNQIFDVCA-UHFFFAOYSA-N 2-propyloxirane Chemical compound CCCC1CO1 SYURNNNQIFDVCA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 229940100198 alkylating agent Drugs 0.000 description 1
- 239000002168 alkylating agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- ODEOTZHRELXGPA-UHFFFAOYSA-M dodecyl(dimethyl)sulfanium;methyl sulfate Chemical compound COS([O-])(=O)=O.CCCCCCCCCCCC[S+](C)C ODEOTZHRELXGPA-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- KXDLQKAJJCMXID-UHFFFAOYSA-M hexyl(dimethyl)sulfanium methyl sulfate Chemical compound COS([O-])(=O)=O.CCCCCC[S+](C)C KXDLQKAJJCMXID-UHFFFAOYSA-M 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/08—Compounds containing oxirane rings with hydrocarbon radicals, substituted by halogen atoms, nitro radicals or nitroso radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C317/00—Sulfones; Sulfoxides
- C07C317/02—Sulfones; Sulfoxides having sulfone or sulfoxide groups bound to acyclic carbon atoms
- C07C317/04—Sulfones; Sulfoxides having sulfone or sulfoxide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C381/00—Compounds containing carbon and sulfur and having functional groups not covered by groups C07C301/00 - C07C337/00
- C07C381/12—Sulfonium compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/32—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/04—Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
Definitions
- the invention relates to an improved process for the production of epoxides from aldehydes or ketones by reacting a ketone or aldehyde with at least one sulfonium salt, as well as sulfonium salts which are used in the process according to the invention.
- Reactions of this type are also known under the name reactions Corey-Chaykovsky reaction (L. Kurti, B. Czako, “Strategy Applications of Named Reactions in Organic Synthesis”).
- the epoxidation of the ketone or aldehyde takes place via a sulfur ylide intermediate, which can be generated from a sulfonium salt.
- the sulfonium salts used for this are usually produced from a dialkyl sulfide and an alkylating agent such as dimethyl sulfate or alkyl halides.
- the invention also relates to sulfonium salts which can be used in the process according to the invention.
- the epoxides produced by the process according to the invention are, for example, intermediate or final stages for various commercial applications, such as, for example, agrochemicals.
- the compound of the formula (IV) is, for example, an intermediate for the azole fungicide cyproconazole (DE 3406993 A1).
- 2- (4-chloropheny) -2- (1-cyclopropyl-ethyl) -oxirane from 1 - (4-chlorophenyl) -2-cyclopropyl-propanone-1 in the presence of dodecyldimethylsulfonium methyl sulfate and potassium hydroxide in one yield described by 25% of theory.
- EP 0205400 A2 describes the preparation of 2-propyloxirane from butyraldehyde in the presence of hexyldimethylsulfonium methyl sulfate and sodium hydroxide in yields of 70 to 80% of theory.
- dialkyl sulfides e.g. dodecyl methyl sulfide or hexyl methyl sulfide
- dialkyl sulfides e.g. dodecyl methyl sulfide or hexyl methyl sulfide
- dialkyl sulfides such as dimethyl sulfide
- the disadvantage that they have a significantly lower reactivity in this type of reaction which has significant economic disadvantages.
- X 2 SY + Z- (II) is reacted, wherein in formula (I) and formula (II) X for methyl and Y for linear C2 to Cu -alkyl, preferably for n-ethyl, n-propyl, n-butyl , n-pentyl, n-heptyl, n-octyl, n-nonyl, n-decyl and n-undecyl, and in which in formula (II) Z is chloride, bromide, iodide or carbonate, in the presence of a base, preferably alkali metal hydroxide, particularly preferably sodium hydroxide or potassium hydroxide.
- a base preferably alkali metal hydroxide, particularly preferably sodium hydroxide or potassium hydroxide.
- the aldehydes or ketones used in the context of the invention are organic compounds which have at least one carbon-oxygen double bond.
- the aldehydes or ketones can be linear, branched or cyclic.
- the aldehydes or ketones used in the process according to the invention can carry further substituents such as further aliphatic or aromatic radicals, which in turn may or may not also be substituted.
- the ketone is the compound of the formula (III),
- the sulfonium salt of the formula (I) is usually in situ, i.e. during the process, by the reaction of a dialkyl sulfide of the formula (V),
- the dialkyl sulfide of the formula (V) is usually used in a slight molar excess, for example from 1.01 to 1.2 mol, preferably from 1.01 to 1.15 mol of dialkyl sulfide, based on 1.00 mol of dimethyl sulfate. Since this reaction is exothermic, the temperature of the initially charged dialkyl sulfide of the formula (I) and / or that of the reaction mixture can also be below 50 ° C. at the beginning of the reaction. The addition of dimethyl sulfate increases the temperature of the reaction mixture even without additional heat being supplied.
- the sulfonium salt obtained in this way can either be used directly in the process according to the invention or can also be stored.
- the sulfonium salt of the formula (II) is also usually in situ, ie during the process, by the reaction of a dialkyl sulfide of the formula (V) in which X and Y have the same meaning as in formula (I) and Z is chloride, bromide or iodide is generated with a methyl halide, for example methyl chloride, methyl bromide or methyl iodide.
- the dialkyl sulfide is usually used in a slight molar excess, for example from 1.01 to 1.2 mol, preferably from 1.01 to 1.15 mol of dialkyl sulfide, based on 1.00 mol of methyl halide.
- the sulfonium salt of the formula (II), in which X and Y have the same meaning as in formula (I) and Z stands for carbonate, is also usually in situ, ie during the process, by the reaction of a dialkyl sulfide of the formula (V) with Dimethyl carbonate generated.
- the dialkyl sulfide is usually used in a slight molar excess, for example from 1.01 to 1.2 mol, preferably from 1.01 to 1.15 mol of dialkyl sulfide, based on 1.00 mol of dimethyl carbonate.
- the sulfonium salts of the formula (I) or of the formula (II) are preferably prepared in a separate reactor, preferably the first reactor (A), particularly preferably in the amount required for the respective reaction of the aldehyde or ketone, preferably the compound of Formula (III) is required.
- the sulfonium salt of the formula (I) or of the formula (II) is therefore used as a melt or as a solution.
- the ketone or aldehyde preferably the compound of the formula (III)
- the process according to the invention is preferably carried out at least in the presence of the dialkyl sulfide of the formula (V) as solvent.
- dialkyl sulfide of the formula (V) are used as the solvent, based on the ketone or the aldehyde, preferably based on the compound of the formula (III) .
- the process according to the invention can also be carried out in the presence of other solvents, for example toluene, xylene, chlorobenzene, water, preferably xylene, mixtures thereof or mixtures of these solvents with dialkyl sulfide of the formula (V).
- solvents for example toluene, xylene, chlorobenzene, water, preferably xylene, mixtures thereof or mixtures of these solvents with dialkyl sulfide of the formula (V).
- the process according to the invention is carried out in the presence of a base, preferably in the presence of alkali metal hydroxide, furthermore preferably in the presence of sodium hydroxide or potassium hydroxide.
- a base preferably in the presence of alkali metal hydroxide, furthermore preferably in the presence of sodium hydroxide or potassium hydroxide.
- Potassium hydroxide is particularly preferably used as the base.
- This can, for example, be potassium hydroxide in solid form, preferably as flakes, powder, or as a solution, particularly preferably as flakes.
- base preferably alkali metal hydroxide, furthermore preferably sodium hydroxide or preferably potassium hydroxide, based on the aldehyde or the ketone, preferably based on the compound of the formula (III), are used.
- per mole of ketone or aldehyde preferably per mole of the compound of the formula (III), from 1.0 to 2 mol, preferably from 1.0 to 1.3 mol, of the sulfonium salt of the formula (I) or (II) used.
- the reaction is usually carried out at temperatures from 20 to 100.degree. C., preferably from 30 to 60.degree.
- reaction of the aldehyde or ketone, preferably the compound of the formula (III), with the sulfonium salt of the formula (I) or the formula (II) takes place in a second reactor (B).
- the reaction of the aldehyde or ketone, preferably the compound of the formula (III) is carried out in the presence of a solvent
- the solvent preferably the dialkyl sulfide of the formula (V)
- from 0.05 to 0.2 mol of water per mole of aldehyde or ketone, preferably per mole of the compound of the formula (III) may be added.
- the alkali metal hydroxide preferably potassium hydroxide or sodium hydroxide
- the reaction mixture preferably the reaction mixture in the second reactor (B)
- the reaction mixture preferably the reaction mixture in the second reactor (B)
- the reactor preferably the second reactor (B)
- the sulfonium salt of the formula (I) or the formula (II) is then added, preferably from the first reactor (A), to the reaction mixture, preferably to the reaction mixture in the second reactor (B).
- the addition is usually carried out within 0.5 to 3 hours, preferably from 0.75 to 2 hours.
- the temperature of the reaction mixture is kept in a range from 30 to 50.degree. C., preferably from 35 to 45.degree.
- the reaction mixture preferably the reaction mixture in the second reactor (B) is after the addition of the amount of the sulfonium salt of the formula (I) or the formula (II), usually from 1 to 4 hours at a temperature of the reaction mixture of 30 to 50 ° C, preferably from 35 to 45 ° C held.
- the reaction mixture is preferably mixed mechanically or hydraulically during and after the addition of the sulfonium salt of the formula (I) or of the formula (II) in such a way that the result is as homogeneous a mixture as possible.
- the progress of the reaction can be determined by analyzing samples that have been worked up like the reaction mixture.
- the content of educt and product can usually be determined by means of HPLC or gas chromatography, either as a percentage by area without an external standard or as a percentage by weight with an external standard.
- the reaction mixture is preferably hydrolyzed with water.
- a third reactor (C) 1 to 2 kg, preferably 1.2 to 1.5 kg, of water based on 1 kg of aldehyde or ketone used, preferably based on 1 kg of compound of the formula ( III), are mixed with the reaction mixture, preferably with the reaction mixture in the second reactor (B).
- Mixing is preferably carried out with mechanical and / or hydraulic mixing.
- the water is particularly preferably initially taken, preferably in the third reactor (C), and the reaction mixture is added, preferably from the second reactor (B).
- the lower aqueous phase can then be drained, preferably from the second reactor (B), and then the upper organic phase, preferably from the second reactor (B), can be transferred into a further reactor, preferably into the third reactor (C) .
- Low-boiling portions of the reaction mixture can then be separated off by distillation from the upper organic phase. This is preferably done at a pressure of 5 to 20 hPa, particularly preferably 7 to 12 hPa.
- a low-boiling fraction for example up to a bottom temperature of 91 ° C. at 10 hPa, is first distilled off.
- n-butyl methyl sulfide is then distilled off, for example up to a bottom temperature of 91 ° C. at 10 hPa. This recovered n-butyl methyl sulfide can be reused in a next reaction of the same type.
- the fraction remaining as the bottom of the distillation contains, as reaction product, the epoxide, preferably the epoxide of the formula (IV), usually with a content of greater than 85% by weight, preferably with a content of at least 90% by weight, in yields of 93 to 100 % of theory.
- the product can usually be used as a starting material in a chemical reaction without further purification or work-up.
- the epoxide of the formula (IV) is usually used in an epoxide opening with triazole to form cyproconazole.
- epoxides preferably the compound of formula (IV)
- an aldehyde or ketone preferably from the compound of the formula (III).
- the invention also relates to the sulfonium salts of the formula (I) and of the formula (II) which are used in the process according to the invention.
- the invention further relates to the use of the sulfonium salts of the formula (I) and of the formula (II) in the process according to the invention for the preparation of epoxides.
- n-butyl methyl sulfide content: at least 90% by weight
- 3157 g of 2- (4-chloropheny) -2- (1-cyclopropyl-ethyl) oxirane compound of Formula (IV)] (content: 90% by weight, yield: 96.6% of theory) remained in the bottom.
- the recovered n-butyl methyl sulfide can be reused in a next reaction for the production of 2- (4-chloropheny) -2- (1-cyclopropyl-ethyl) -oxirane.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19196907 | 2019-09-12 | ||
PCT/EP2020/075210 WO2021048212A1 (en) | 2019-09-12 | 2020-09-09 | Improved process for preparing epoxides from aldehydes or ketones |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4028390A1 true EP4028390A1 (en) | 2022-07-20 |
Family
ID=67953613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20775207.2A Pending EP4028390A1 (en) | 2019-09-12 | 2020-09-09 | Improved process for preparing epoxides from aldehydes or ketones |
Country Status (7)
Country | Link |
---|---|
US (1) | US20220332691A1 (en) |
EP (1) | EP4028390A1 (en) |
CN (1) | CN114401950A (en) |
BR (1) | BR112022004259A2 (en) |
CA (1) | CA3153841A1 (en) |
MX (1) | MX2022002846A (en) |
WO (1) | WO2021048212A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3998856A (en) * | 1975-04-10 | 1976-12-21 | Hoffmann-La Roche Inc. | Preparation of epoxides |
EP0079972B1 (en) * | 1981-11-19 | 1985-05-02 | C.F. Spiess & Sohn GmbH & Co. Chemische Fabrik | Process for producing tertiary sulfonium montmorrillonites, and their use |
CH658654A5 (en) | 1983-03-04 | 1986-11-28 | Sandoz Ag | AZOLE DERIVATIVES, METHOD FOR THEIR PRODUCTION AND MEANS THAT CONTAIN THESE COMPOUNDS. |
EP0205400A3 (en) * | 1985-06-03 | 1987-10-14 | Ciba-Geigy Ag | Process for the preparation of alkyl oxiranes |
CN102803230A (en) * | 2009-06-12 | 2012-11-28 | 巴斯夫欧洲公司 | Antifungal 1,2,4-triazolyl derivatives having a 5-sulfur substituent |
-
2020
- 2020-09-09 CA CA3153841A patent/CA3153841A1/en active Pending
- 2020-09-09 CN CN202080064271.7A patent/CN114401950A/en active Pending
- 2020-09-09 EP EP20775207.2A patent/EP4028390A1/en active Pending
- 2020-09-09 US US17/642,542 patent/US20220332691A1/en active Pending
- 2020-09-09 BR BR112022004259A patent/BR112022004259A2/en unknown
- 2020-09-09 MX MX2022002846A patent/MX2022002846A/en unknown
- 2020-09-09 WO PCT/EP2020/075210 patent/WO2021048212A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
MX2022002846A (en) | 2022-04-06 |
CN114401950A (en) | 2022-04-26 |
CA3153841A1 (en) | 2021-03-18 |
WO2021048212A1 (en) | 2021-03-18 |
US20220332691A1 (en) | 2022-10-20 |
BR112022004259A2 (en) | 2022-05-31 |
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