JP4638441B2 - 6,6,6−トリハロ−3,5−ジオキソヘキサン酸エステルの生産方法 - Google Patents
6,6,6−トリハロ−3,5−ジオキソヘキサン酸エステルの生産方法 Download PDFInfo
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- JP4638441B2 JP4638441B2 JP2006536059A JP2006536059A JP4638441B2 JP 4638441 B2 JP4638441 B2 JP 4638441B2 JP 2006536059 A JP2006536059 A JP 2006536059A JP 2006536059 A JP2006536059 A JP 2006536059A JP 4638441 B2 JP4638441 B2 JP 4638441B2
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- 238000004519 manufacturing process Methods 0.000 title description 3
- 150000001875 compounds Chemical class 0.000 claims description 41
- 150000002085 enols Chemical class 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 23
- 125000000217 alkyl group Chemical group 0.000 claims description 22
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 16
- 229910052794 bromium Inorganic materials 0.000 claims description 14
- 229910052731 fluorine Inorganic materials 0.000 claims description 14
- 125000003118 aryl group Chemical group 0.000 claims description 13
- 229910052801 chlorine Inorganic materials 0.000 claims description 12
- 239000000460 chlorine Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 9
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 9
- 150000002084 enol ethers Chemical class 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 9
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 8
- -1 alkaline earth metal cation Chemical class 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 claims description 3
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical group II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims 2
- 125000004432 carbon atom Chemical group C* 0.000 description 7
- 125000001153 fluoro group Chemical group F* 0.000 description 7
- ZPSJGADGUYYRKE-UHFFFAOYSA-N 2H-pyran-2-one Chemical class O=C1C=CC=CO1 ZPSJGADGUYYRKE-UHFFFAOYSA-N 0.000 description 6
- CKWWKKKPZOFTOU-UHFFFAOYSA-N 4-methoxy-6-(trifluoromethyl)pyran-2-one Chemical compound COC=1C=C(C(F)(F)F)OC(=O)C=1 CKWWKKKPZOFTOU-UHFFFAOYSA-N 0.000 description 5
- 238000007792 addition Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 4
- PGRHXDWITVMQBC-UHFFFAOYSA-N dehydroacetic acid Chemical compound CC(=O)C1C(=O)OC(C)=CC1=O PGRHXDWITVMQBC-UHFFFAOYSA-N 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000000023 Kugelrohr distillation Methods 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 3
- VOLMSPGWNYJHQQ-UHFFFAOYSA-N Pyranone Natural products CC1=C(O)C(=O)C(O)CO1 VOLMSPGWNYJHQQ-UHFFFAOYSA-N 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- IAQSDUQWRAQRDH-UHFFFAOYSA-N methyl 6,6,6-trifluoro-3,5-dioxohexanoate Chemical compound COC(=O)CC(=O)CC(=O)C(F)(F)F IAQSDUQWRAQRDH-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 238000011002 quantification Methods 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- OJZIIRJZQXTRGG-UHFFFAOYSA-N 4-hydroxy-6-(trifluoromethyl)pyran-2-one Chemical compound OC=1C=C(C(F)(F)F)OC(=O)C=1 OJZIIRJZQXTRGG-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- VAYGXNSJCAHWJZ-UHFFFAOYSA-N dimethyl sulfate Chemical compound COS(=O)(=O)OC VAYGXNSJCAHWJZ-UHFFFAOYSA-N 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- CRGZYKWWYNQGEC-UHFFFAOYSA-N magnesium;methanolate Chemical compound [Mg+2].[O-]C.[O-]C CRGZYKWWYNQGEC-UHFFFAOYSA-N 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 0 *C(O1)=CC(O)=CC1=O Chemical compound *C(O1)=CC(O)=CC1=O 0.000 description 1
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- ZKUJOCJJXCPCFS-UHFFFAOYSA-N 2,2,2-trifluoroethyl 2,2,2-trifluoroacetate Chemical compound FC(F)(F)COC(=O)C(F)(F)F ZKUJOCJJXCPCFS-UHFFFAOYSA-N 0.000 description 1
- 125000002941 2-furyl group Chemical group O1C([*])=C([H])C([H])=C1[H] 0.000 description 1
- 125000003682 3-furyl group Chemical group O1C([H])=C([*])C([H])=C1[H] 0.000 description 1
- FMWHPEKDAPOYOE-UHFFFAOYSA-N 3-oxopentanamide Chemical compound CCC(=O)CC(N)=O FMWHPEKDAPOYOE-UHFFFAOYSA-N 0.000 description 1
- VNZOLPIHDIJPBZ-UHFFFAOYSA-N 4-hydroxypyran-2-one Chemical compound OC=1C=COC(=O)C=1 VNZOLPIHDIJPBZ-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- OSDWBNJEKMUWAV-UHFFFAOYSA-N Allyl chloride Chemical compound ClCC=C OSDWBNJEKMUWAV-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- OPNUHRFJIVWBQN-UHFFFAOYSA-N CC(C1=C(C=O)C=C(C)OC1=O)=O Chemical compound CC(C1=C(C=O)C=C(C)OC1=O)=O OPNUHRFJIVWBQN-UHFFFAOYSA-N 0.000 description 1
- 239000004287 Dehydroacetic acid Substances 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- AGEZXYOZHKGVCM-UHFFFAOYSA-N benzyl bromide Chemical compound BrCC1=CC=CC=C1 AGEZXYOZHKGVCM-UHFFFAOYSA-N 0.000 description 1
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 1
- 229940073608 benzyl chloride Drugs 0.000 description 1
- RDHPKYGYEGBMSE-UHFFFAOYSA-N bromoethane Chemical compound CCBr RDHPKYGYEGBMSE-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 229940061632 dehydroacetic acid Drugs 0.000 description 1
- 235000019258 dehydroacetic acid Nutrition 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- DENRZWYUOJLTMF-UHFFFAOYSA-N diethyl sulfate Chemical compound CCOS(=O)(=O)OCC DENRZWYUOJLTMF-UHFFFAOYSA-N 0.000 description 1
- 229940008406 diethyl sulfate Drugs 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- VRZVPALEJCLXPR-UHFFFAOYSA-N ethyl 4-methylbenzenesulfonate Chemical compound CCOS(=O)(=O)C1=CC=C(C)C=C1 VRZVPALEJCLXPR-UHFFFAOYSA-N 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VUQUOGPMUUJORT-UHFFFAOYSA-N methyl 4-methylbenzenesulfonate Chemical compound COS(=O)(=O)C1=CC=C(C)C=C1 VUQUOGPMUUJORT-UHFFFAOYSA-N 0.000 description 1
- MJTRGVOEGVLXRK-UHFFFAOYSA-N methyl 6,6,6-trifluoro-2-methoxy-5-oxohex-2-enoate Chemical compound COC(=O)C(OC)=CCC(=O)C(F)(F)F MJTRGVOEGVLXRK-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- KZQFPRKQBWRRHQ-UHFFFAOYSA-N phenyl 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OC1=CC=CC=C1 KZQFPRKQBWRRHQ-UHFFFAOYSA-N 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000002444 phloroglucinyl group Chemical class [H]OC1=C([H])C(O[H])=C(*)C(O[H])=C1[H] 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004309 pyranyl group Chemical group O1C(C=CC=C1)* 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000011973 solid acid Substances 0.000 description 1
- JKUYRAMKJLMYLO-UHFFFAOYSA-N tert-butyl 3-oxobutanoate Chemical compound CC(=O)CC(=O)OC(C)(C)C JKUYRAMKJLMYLO-UHFFFAOYSA-N 0.000 description 1
- OVNWJARUWRLQQZ-UHFFFAOYSA-N tert-butyl 6,6,6-trifluoro-3,5-dioxohexanoate Chemical compound CC(C)(C)OC(=O)CC(=O)CC(=O)C(F)(F)F OVNWJARUWRLQQZ-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
- C07C69/73—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
- C07C69/738—Esters of keto-carboxylic acids or aldehydo-carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
- C07D309/38—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms one oxygen atom in position 2 or 4, e.g. pyrones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrane Compounds (AREA)
Description
(ここで、置換基Xは、それぞれ互いに独立して、フッ素、塩素又は臭素であり、R1はそれぞれの場合で、アルキル、シクロアルキル、アリール又はアラルキルであり、R2はアルキル、シクロアルキル、アリル又はベンジルである)
式IIのピラノン(pyranones)から開始する調製方法に関する
該ヒドロキシル基をエーテル基に転化し、続いて、さらなる反応状態に依存して、メタルアルコラートでピラン環を開環した後に、式Iの化合物又は式Ibのそれらのエノールエーテルを良好な収率で提供することが分かった。
(ここで、置換基Xは、それぞれ互いに独立して、フッ素、塩素又は臭素であり、R1はそれぞれの場合で、アルキル、シクロアルキル、アリール又はアラルキルであり、R2はアルキル、シクロアルキル、アリル又はベンジルである)
を調製するための本発明の方法において、
式IIの化合物
及び、続いて、該反応産物のピラノン環が、式R1O-1/nMn+のメタルアルコラート(ここで、R1 は上記の意味を有し、Mn+はアルカリ金属又はアルカリ土類金属カチオンであり、n = 1又は2である)と、さらなる反応条件に依存して反応することによって開環し、式I又はIbの化合物を与える。
(ここで、Xはそれぞれの場合で互いに独立して、F、Cl又はBrであり、R1はアルキル、シクロアルキル、アリール又はアラルキルであり、R2はアルキル、シクロアルキル、アリル又はベンジルである)。式Ibの化合物は、上記式Iの化合物と同じように、E及び/又はZ異性体の形体にある。外部条件に依存して、しかしながら、C5におけるカルボニル基のみがエノール化され得る。C2/C3及び/又はC4/C5における得られた二重結合の数と位置は、式Iの化合物のエノールのE及びZ異性体に対応する。
4-メトキシ-6-トリフルオロメチルピラン-2-オン(III; R2 = メチル、X = フッ素)
炭酸ナトリウム(1.35 g、13 mmol)及び硫酸ジメチル(2.17 g、17 mmol)を、アセトン(50 mL)中の4-ヒドロキシ-6-トリフルオロメチルピラン-2-オン(3.0 g、17 mmol)の溶液に加えた。この混合物を、還流下で3時間熱し、冷却した後に濾過した。濾液の濃縮により、2.9gの粗製産物を茶色の油として得た。ヘキサンから再結晶化することにより、融点61℃の無色の針状として4-メトキシ-6-トリフルオロメチルピラン-2-オン(2.74 g、14 mmol、83%)を得ることが可能であった。
メタノリック(methanolic)マグネシウムメタノレート溶液(8.5% Mg(OMe)2、8.36 g、8 mmol)中の4-メトキシ-6-トリフルオロメチルピラン-2-オン(2.7 g、14 mmol)の溶液を、還流下で16時間熱した。この溶液を濃縮し、水及び酢酸エチル中にとり、希塩酸を加えて有機相をpH 5にした。有機相を分離し、乾燥して濃縮した。1.5gの粗製産物が黄色油として得られた。0.04 mbar及び約160℃でのクーゲルロール蒸留により、メチル6,6,6-トリフルオロ-3メトキシ-5-オキソ-2-ヘキサノエート(1.50 g、6.6 mmol、48%)が淡黄色の油として得られた。
1H NMR(400 MHz、DMS0-d6)δ(エノール形体Ibの共鳴線、E/Z 定量なし): 6.05(s、1H)、3.9(s、3H)、3.82(s、2H)、3.62(s、3H)。
メタノリックマグネシウムメタノレート溶液(8.5% Mg(OMe)2、62.8 g、61 mmol)中の4-メトキシ-6-トリフルオロメチルピラン-2-オン(10 g、52 mmol)の溶液を、還流下で2時間熱した。濃HCl(25.5 g、250 mmol)溶液を該反応溶液に加え、該混合物を還流下で2時間熱し、次いで、冷却し、最初の容量の約20%に真空下で濃縮した。残渣を、それぞれ10 mLの塩化メチレン及び水と混合した。有機相を分離し、水で洗浄し、硫酸ナトリウムで乾燥して濃縮した。0.04 mbar及び約160℃でのクーゲルロール蒸留により、メチル6,6,6-トリフルオロ-3,5-ジオキソヘキサノエート(2.8 g、13 mmol、26%)を淡黄色の油として得た。
1H NMR(400 MHz、DMSO-d6)δ(エノール型Ia'の共鳴線、E/Z定量なし): 6.0(br、2H)、3.8(s、2H)、3.65(s、3H)。
Claims (4)
- 式Iの化合物、及びそれらのエノール及びE及びZ異性体の調製方法であって、
最初に式IIの化合物を、
該ヒドロキシル基を式(R2O)2SO2の化合物と、或いは、式 Y-R2の化合物(ここで、Yはトシル、塩素、臭素又はヨウ素であり、R2 はそれぞれの場合でアルキル、シクロアルキル、アリル又はベンジルである)と反応させることによって、式IIIの化合物に転化し、
- 式Ibのエノールエーテル及びそれらのエノール及びE及びZのそれぞれの場合のそれらの異性体の調製方法であって、
最初に式IIの化合物を、
該ヒドロキシル基を式(R2O)2SO2の化合物と、或いは、式 Y-R2の化合物(ここで、Yはトシル、塩素、臭素又はヨウ素であり、R2 はそれぞれの場合で上記の意味を有する)と反応させることによって、式IIIの化合物に転化し
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