WO2022202643A1 - S,s-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの製造方法 - Google Patents
S,s-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの製造方法 Download PDFInfo
- Publication number
- WO2022202643A1 WO2022202643A1 PCT/JP2022/012506 JP2022012506W WO2022202643A1 WO 2022202643 A1 WO2022202643 A1 WO 2022202643A1 JP 2022012506 W JP2022012506 W JP 2022012506W WO 2022202643 A1 WO2022202643 A1 WO 2022202643A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- methylquinoxaline
- dithiocarbonate
- diyl
- acetate
- reaction
- Prior art date
Links
- FBQQHUGEACOBDN-UHFFFAOYSA-N quinomethionate Chemical compound N1=C2SC(=O)SC2=NC2=CC(C)=CC=C21 FBQQHUGEACOBDN-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- -1 alkali metal salt Chemical class 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000000746 purification Methods 0.000 claims abstract description 26
- YTKGLURLTLIZJG-UHFFFAOYSA-N 6-methyl-1,4-dihydroquinoxaline-2,3-dithione Chemical compound N1C(=S)C(=S)NC2=CC(C)=CC=C21 YTKGLURLTLIZJG-UHFFFAOYSA-N 0.000 claims abstract description 23
- AHWALFGBDFAJAI-UHFFFAOYSA-N phenyl carbonochloridate Chemical compound ClC(=O)OC1=CC=CC=C1 AHWALFGBDFAJAI-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 17
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 17
- 239000003444 phase transfer catalyst Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 10
- 150000002168 ethanoic acid esters Chemical class 0.000 claims abstract description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 36
- BGPJLYIFDLICMR-UHFFFAOYSA-N 1,4,2,3-dioxadithiolan-5-one Chemical compound O=C1OSSO1 BGPJLYIFDLICMR-UHFFFAOYSA-N 0.000 claims description 11
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 8
- YKYONYBAUNKHLG-UHFFFAOYSA-N propyl acetate Chemical compound CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 claims description 8
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 4
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- GJRQTCIYDGXPES-UHFFFAOYSA-N iso-butyl acetate Natural products CC(C)COC(C)=O GJRQTCIYDGXPES-UHFFFAOYSA-N 0.000 claims description 4
- FGKJLKRYENPLQH-UHFFFAOYSA-M isocaproate Chemical compound CC(C)CCC([O-])=O FGKJLKRYENPLQH-UHFFFAOYSA-M 0.000 claims description 4
- OQAGVSWESNCJJT-UHFFFAOYSA-N isovaleric acid methyl ester Natural products COC(=O)CC(C)C OQAGVSWESNCJJT-UHFFFAOYSA-N 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000001953 recrystallisation Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 21
- 230000015572 biosynthetic process Effects 0.000 abstract description 12
- 238000003786 synthesis reaction Methods 0.000 abstract description 12
- 239000007858 starting material Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 description 25
- 235000019439 ethyl acetate Nutrition 0.000 description 23
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 150000001340 alkali metals Chemical class 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 6
- 239000012046 mixed solvent Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000004679 hydroxides Chemical class 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- FYFLCWYDZJJMDE-UHFFFAOYSA-N (2-methylphenyl) carbonochloridate Chemical compound CC1=CC=CC=C1OC(Cl)=O FYFLCWYDZJJMDE-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000001476 alcoholic effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- LQDOSVZYHLTSFF-UHFFFAOYSA-N (2-bromophenyl) carbonochloridate Chemical compound ClC(=O)OC1=CC=CC=C1Br LQDOSVZYHLTSFF-UHFFFAOYSA-N 0.000 description 2
- PENYBFRQSLVMLW-UHFFFAOYSA-N (2-chlorophenyl) carbonochloridate Chemical compound ClC(=O)OC1=CC=CC=C1Cl PENYBFRQSLVMLW-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- ALHUXMDEZNLFTA-UHFFFAOYSA-N 2-methylquinoxaline Chemical compound C1=CC=CC2=NC(C)=CN=C21 ALHUXMDEZNLFTA-UHFFFAOYSA-N 0.000 description 2
- 239000001640 5-methylquinoxaline Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- ZCZSIDMEHXZRLG-UHFFFAOYSA-N Heptyl acetate Chemical compound CCCCCCCOC(C)=O ZCZSIDMEHXZRLG-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-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
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229940022663 acetate Drugs 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000007810 chemical reaction solvent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- AOGQPLXWSUTHQB-UHFFFAOYSA-N hexyl acetate Chemical compound CCCCCCOC(C)=O AOGQPLXWSUTHQB-UHFFFAOYSA-N 0.000 description 2
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 description 2
- UWKAYLJWKGQEPM-LBPRGKRZSA-N linalyl acetate Chemical compound CC(C)=CCC[C@](C)(C=C)OC(C)=O UWKAYLJWKGQEPM-LBPRGKRZSA-N 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- YLYBTZIQSIBWLI-UHFFFAOYSA-N octyl acetate Chemical compound CCCCCCCCOC(C)=O YLYBTZIQSIBWLI-UHFFFAOYSA-N 0.000 description 2
- PGMYKACGEOXYJE-UHFFFAOYSA-N pentyl acetate Chemical compound CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- BHBGJFGMXPBNBV-UHFFFAOYSA-N (2-butylphenyl) carbonochloridate Chemical compound CCCCC1=CC=CC=C1OC(Cl)=O BHBGJFGMXPBNBV-UHFFFAOYSA-N 0.000 description 1
- FHLXUWOHGKLDNF-UHFFFAOYSA-N (2-nitrophenyl) carbonochloridate Chemical compound [O-][N+](=O)C1=CC=CC=C1OC(Cl)=O FHLXUWOHGKLDNF-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- KJXFXPLSUCOESK-UHFFFAOYSA-N 2,3-dibromo-6-methylquinoxaline Chemical compound N1=C(Br)C(Br)=NC2=CC(C)=CC=C21 KJXFXPLSUCOESK-UHFFFAOYSA-N 0.000 description 1
- UWSAFTDEEVGSAC-UHFFFAOYSA-N 2,3-dichloro-6-methylquinoxaline Chemical compound N1=C(Cl)C(Cl)=NC2=CC(C)=CC=C21 UWSAFTDEEVGSAC-UHFFFAOYSA-N 0.000 description 1
- OSRARURJYPOUOV-UHFFFAOYSA-N 6-Methylquinoxaline Natural products N1=CC=NC2=CC(C)=CC=C21 OSRARURJYPOUOV-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 1
- CKOYRRWBOKMNRG-UHFFFAOYSA-N Furfuryl acetate Chemical compound CC(=O)OCC1=CC=CO1 CKOYRRWBOKMNRG-UHFFFAOYSA-N 0.000 description 1
- LELOWRISYMNNSU-UHFFFAOYSA-N Hydrocyanic acid Natural products N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- LWAIYGCOHDGJDG-UHFFFAOYSA-N [2-(trifluoromethyl)phenyl] carbonochloridate Chemical compound FC(F)(F)C1=CC=CC=C1OC(Cl)=O LWAIYGCOHDGJDG-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- IPBVNPXQWQGGJP-UHFFFAOYSA-N acetic acid phenyl ester Natural products CC(=O)OC1=CC=CC=C1 IPBVNPXQWQGGJP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229940007550 benzyl acetate Drugs 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- HIGQPQRQIQDZMP-UHFFFAOYSA-N geranil acetate Natural products CC(C)=CCCC(C)=CCOC(C)=O HIGQPQRQIQDZMP-UHFFFAOYSA-N 0.000 description 1
- HIGQPQRQIQDZMP-DHZHZOJOSA-N geranyl acetate Chemical compound CC(C)=CCC\C(C)=C\COC(C)=O HIGQPQRQIQDZMP-DHZHZOJOSA-N 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229940117955 isoamyl acetate Drugs 0.000 description 1
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 1
- 229940011051 isopropyl acetate Drugs 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- UWKAYLJWKGQEPM-UHFFFAOYSA-N linalool acetate Natural products CC(C)=CCCC(C)(C=C)OC(C)=O UWKAYLJWKGQEPM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Chemical class 0.000 description 1
- 239000002184 metal Chemical class 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229940049953 phenylacetate Drugs 0.000 description 1
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical compound OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 description 1
- 150000004714 phosphonium salts Chemical group 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
- NHGXDBSUJJNIRV-UHFFFAOYSA-M tetrabutylammonium chloride Chemical compound [Cl-].CCCC[N+](CCCC)(CCCC)CCCC NHGXDBSUJJNIRV-UHFFFAOYSA-M 0.000 description 1
- IBWGNZVCJVLSHB-UHFFFAOYSA-M tetrabutylphosphanium;chloride Chemical compound [Cl-].CCCC[P+](CCCC)(CCCC)CCCC IBWGNZVCJVLSHB-UHFFFAOYSA-M 0.000 description 1
- 229940117958 vinyl acetate Drugs 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B61/00—Other general methods
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/04—Ortho-condensed systems
Definitions
- the present invention relates to a method for producing S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate useful as a vulcanizing agent for polymers.
- S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate is a compound widely used as an agricultural chemical, and is also known as a useful compound as a vulcanizing agent for polymers.
- Patent Document 1 describes that it can be synthesized from the reaction of 2,3-dimercapto-6-methylquinoxaline and phosgene in the presence of sodium hydroxide as an acid acceptor.
- Patent Document 2 describes a method in which 2,3-dimercapto-6-methylquinoxaline and a metal salt are reacted with phenyl chloroformate in the presence of a phase transfer catalyst. .
- An object of the present invention is to efficiently remove raw materials used during synthesis and specific impurities produced from S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate to obtain highly pure S,S-( An object of the present invention is to provide a method for producing 6-methylquinoxaline-2,3-diyl)dithiocarbonate.
- Section 1 After converting 2,3-dimercapto-6-methylquinoxaline into an alkali metal salt or alkaline earth metal salt, it is reacted with phenyl chloroformates in the presence of a phase transfer catalyst to give S,S-(6-methylquinoxaline -2,3-diyl)dithiocarbonate (reaction step); S,S-(6 -Method for the preparation of methylquinoxaline-2,3-diyl)dithiocarbonate. Section 2. Item 2.
- Item 3. The production method according to Item 1 or 2, wherein the purification using an acetate in the purification step is one or more of immersion, recrystallization, and solvent extraction.
- the production method of the present invention it is possible to obtain high-purity S,S-(6-methylquinoxaline-2,3-diyl) dithiocarbonate with reduced raw materials used during synthesis and specific impurities produced.
- the S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate obtained by the production method of the present invention is useful as a vulcanizing agent for polymers.
- 2,3-dimercapto-6-methylquinoxaline is converted to an alkali metal salt or an alkaline earth metal salt, and then reacted with phenyl chloroformates in the presence of a phase transfer catalyst to obtain S,S-( a step of obtaining 6-methylquinoxaline-2,3-diyl)dithiocarbonate (reaction step); S,S-(6 -methylquinoxaline-2,3-diyl)dithiocarbonate.
- the present invention can obtain high-purity S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate in good yield by providing the above configuration.
- Reaction step In the reaction step in the production method of the present invention, 2,3-dimercapto-6-methylquinoxaline is converted to an alkali metal salt or an alkaline earth metal salt, and then phenyl chloroformates and a phase transfer catalyst are added. By the reaction, S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate can be obtained.
- the reaction step can be carried out, for example, according to the description of JP-A-11-80133.
- 2,3-Dimercapto-6-methylquinoxaline used in the reaction process can be easily synthesized by a general recipe.
- 2,3-dihalogeno-6-methylquinoxaline e.g., 2,3-dichloro-6-methylquinoxaline, 2,3-dibromo-6-methylquinoxaline, etc.
- NaSH sodium sulfate
- an alkali metal or alkaline earth metal hydroxide When converting 2,3-dimercapto-6-methylquinoxaline into an alkali metal salt or an alkaline earth metal salt, an alkali metal or alkaline earth metal hydroxide can be used.
- hydroxides of alkali metals or alkaline earth metals sodium hydroxide, potassium hydroxide, calcium hydroxide and the like are used.
- carbonate sodium carbonate, potassium carbonate, sodium hydrogencarbonate, calcium carbonate and the like are used. These may be used alone or in combination of two or more. Among them, hydroxides of alkali metals or alkaline earth metals are preferred, and sodium hydroxide, potassium hydroxide and calcium hydroxide are more preferred.
- the amount of alkali metal or alkaline earth metal hydroxide to be added may be 1.0 to 5.0 times the molar amount of 2,3-dimercapto-6-methylquinoxaline, and may be 1.5 to 4 times the molar amount. 0-fold molar is preferred, and 2.5 to 3.0-fold molar is more preferred.
- Alkali metal salts or alkaline earth metal salts of 2,3-dimercapto-6-methylquinoxaline are generally prepared from hydroxides, carbonates, etc. of 2,3-dimercapto-6-methylquinoxaline and alkali metals or alkaline earth metals. can be metallized by reacting in an alcoholic solvent such as water or methanol.
- the temperature and time of metal chloride may be adjusted as appropriate. The temperature may be room temperature to 100°C, preferably 50°C to 100°C, and the time may be 0.5 to 100 hours. , preferably 1 hour to 50 hours, more preferably 1 hour to 10 hours.
- S,S-(6-methylquinoxaline is obtained by reacting an alkali metal salt or an alkaline earth metal salt of 2,3-dimercapto-6-methylquinoxaline with phenyl chloroformates in the presence of a phase transfer catalyst.
- -2,3-diyl)dithiocarbonate is obtained.
- Phase transfer catalysts include quaternary ammonium salts, pyridinium salts, quaternary phosphonium salts, and more specifically tetra-n-butylammonium bromide, tetra-n-butylammonium chloride, trioctylmethyl chloride. ammonium, Nn-octylpyridinium chloride, tetrabutylphosphonium chloride and the like. These may be used alone or in combination of two or more.
- the phase transfer catalyst is used in an amount of generally 0.1 to 20 mol %, preferably 1 to 5 mol %, relative to 2,3-dimercapto-6-methylquinoxaline.
- Phenyl chloroformates include phenyl chloroformate, methylphenyl chloroformate, chlorophenyl chloroformate, fluorophenyl chloroformate, bromophenyl chloroformate, nitrophenyl chloroformate, trifluoromethylphenyl chloroformate, butylphenyl chloroformate, and the like. be done. These may be used alone or in combination of two or more.
- phenyl chloroformate, methylphenyl chloroformate, chlorophenyl chloroformate, fluorophenyl chloroformate, and bromophenyl chloroformate are preferable, and phenyl chloroformate and methylphenyl chloroformate are more preferable.
- the amount of phenyl chloroformate to be used may be in the range of 1.0 to 5.0 times the moles of 2,3-dimercapto-6-methylquinoxaline, and 2.0 to 5.0 times the moles of the 2,3-dimercapto-6-methylquinoxaline. A range is preferred.
- the alkali metal or alkaline earth metal salt of 2,3-dimercapto-6-methylquinoxaline can be used as an aqueous solution, as a powder, or as a slurry in a solvent for the reaction with phenyl chloroformates. You can use it.
- 2,3-dimercapto-6-methylquinoxaline and hydroxides and carbonates of alkali metals or alkaline earth metals are metallized in water or alcoholic solvents such as methanol, and then aromatics such as toluene and xylene are added.
- 2,3-dimercapto-6- A slurry of an alkali metal or alkaline earth metal salt of methylquinoxaline is obtained.
- a slurry of the alkali metal or alkaline earth metal salt of 2,3-dimercapto-6-methylquinoxaline may be filtered and isolated or used as such for reaction with phenyl chloroformates.
- a solvent or a mixed solvent thereof can be used as a reaction solvent for the reaction between the alkali metal salt or alkaline earth metal salt of 2,3-dimercapto-6-methylquinoxaline and the phenyl chloroformates.
- solvents include aromatic hydrocarbons such as benzene, toluene and xylene; halogenated hydrocarbons such as 1,2-dichloroethane, dichloromethane and chloroform; ethers such as diethyl ether, dioxane and tetrahydrofuran; and polar solvents such as dimethylsulfoxide, N,N-dimethylformamide and acetonitrile. These may be used alone or in combination of two or more.
- the reaction temperature is usually -30 to 200°C, preferably in the range of 0 to 100°C.
- the reaction time is affected by the reaction temperature and is not necessarily limited, but is generally 0.5 to 100 hours, preferably 0.5 to 48 hours, more preferably 0.5 to 10 hours.
- the reaction is usually carried out by dropping the phenyl chloroformates into a reaction solvent containing an alkali metal salt or alkaline earth metal salt of 2,3-dimercapto-6-methylquinoxaline and a phase transfer catalyst. It is also possible to drop at the same time.
- the S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate obtained by the reaction can be easily isolated from the reaction solution by general operations such as filtration.
- the S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate obtained by the reaction contains raw materials used during synthesis (phase transfer catalyst, etc.) and specific impurities generated (eg, diphenyl carbonate, etc.). It is included.
- a purification step using acetic acid esters is performed in order to remove these.
- the purification step in the production method of the present invention is characterized by purifying the S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate obtained in the reaction step using acetic esters. It is something to do. As a result, the raw materials (phase transfer catalyst, etc.) used in the synthesis and the specific impurities (eg, diphenyl carbonate, etc.) produced during the synthesis can be converted into S,S-(6-methylquinoxaline-2,3-diyl) dithiocarbonate in good yield. can be removed.
- the raw materials (phase transfer catalyst, etc.) used in the synthesis and the specific impurities (eg, diphenyl carbonate, etc.) produced during the synthesis can be converted into S,S-(6-methylquinoxaline-2,3-diyl) dithiocarbonate in good yield. can be removed.
- any purification method may be used as long as the purification is performed using acetate esters.
- impurities may be removed by immersing S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate in acetic esters, and S,S-(6 -methylquinoxaline-2,3-diyl)dithiocarbonate may be recrystallized, and solvent extraction of S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate may be performed using acetic esters.
- the purification step in the production method of the present invention does not include spray washing using acetic esters. Spray washing may be performed before and after the purification step in the production method of the present invention.
- S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate it is preferable to immerse S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate in acetic esters because high yield and high purity can be obtained. That is, S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate obtained by the reaction is brought into contact with acetic esters for a certain period of time or longer to obtain S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate. Impurities contained in 3-diyl)dithiocarbonate can be efficiently removed.
- the solvent used in the purification step is not particularly limited as long as it is an acetic acid ester.
- Examples include methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, sec-butyl acetate, and acetic acid.
- Alkyl groups such as tert-butyl, n-pentyl acetate, n-hexyl acetate, isoamyl acetate, n-heptyl acetate, n-octyl acetate (preferably alkyl groups having 1 to 6 carbon atoms, more preferably alkyl groups having 1 to 4 carbon atoms) ); geranyl acetate, vinyl acetate, phenyl acetate, furfuryl acetate, benzyl acetate, linalyl acetate and the like. These may be used alone or in combination of two or more.
- acetic acid esters having an alkyl group are preferred, and methyl acetate, ethyl acetate, n-propyl acetate, n-butyl acetate and isobutyl acetate are more preferred.
- the solvent used in the purification step in the production method of the present invention only needs to contain acetic esters, and a mixed solvent with other solvents may be used.
- the content of the acetic ester in the mixed solvent may be 50% by weight or more, preferably 75% by weight or more, and more preferably 90% by weight or more.
- solvents in the case of using a mixed solvent with acetic esters as the solvent used in the purification step include alcoholic solvents such as methanol, ethanol, n-propanol and isopropanol, tetrahydrofuran, diethyl ether, methyl-tert-butyl ether and the like.
- aromatic hydrocarbon solvents such as benzene and toluene; aliphatic hydrocarbon solvents such as pentane, hexane, heptane and cyclohexane; halogen solvents such as methylene chloride and 1,2-dichloroethane; , ketone solvents such as methyl isobutyl ketone, and nitrile solvents such as acetonitrile and propionitrile.
- aromatic hydrocarbon solvents such as benzene and toluene
- aliphatic hydrocarbon solvents such as pentane, hexane, heptane and cyclohexane
- halogen solvents such as methylene chloride and 1,2-dichloroethane
- ketone solvents such as methyl isobutyl ketone
- nitrile solvents such as acetonitrile and propionitrile.
- the purification step by purifying S,S-(6-methylquinoxaline-2,3-diyl) dithiocarbonate using acetic esters, the raw materials (phase transfer catalyst, etc.) used during synthesis and the specific impurities (eg, diphenyl carbonate, etc.) can be removed.
- S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate is purified using acetic esters to obtain high-purity S,S-(6 -methylquinoxaline-2,3-diyl)dithiocarbonate.
- the amount of the acetic acid ester used in the purification step can be appropriately examined. Well, 5 to 100 times the amount is preferable, and 10 to 50 times the amount is more preferable.
- the contact time between S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate and the acetic ester is not particularly limited.
- the time may be 1 minute or longer, preferably 0.5 to 72 hours.
- the temperature of the acetic ester in the purification step may be lower than the boiling point of the solvent, preferably 0°C to 50°C.
- S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate subjected to the purification step can be recovered by ordinary methods such as filtration and vacuum drying. Moreover, you may wash
- the purification step in the production method of the present invention may be repeated several times depending on the purpose to remove impurities in S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate. can be done.
- ethyl acetate which is an acetic acid ester, has low solubility of S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate and high solubility of diphenyl carbonate.
- S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate as a solvent capable of efficiently removing impurities from the dithiocarbonate.
- Other solvents have high solubility of both S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate and diphenyl carbonate or low solubility of both.
- Example 2 24.0 g of sodium hydroxide was dissolved in 190 ml of water, 50.0 g of 2,3-dimercapto-6-methylquinoxaline was added thereto, and the mixture was stirred at room temperature for 1 hour. Then, 500 ml of toluene was added for azeotropic dehydration. After cooling, 3.9 g of tetra-n-butylammonium bromide was added, and a solution of 78.9 g of phenyl chloroformate and 95 ml of toluene was added dropwise at 40-45°C over 60 minutes.
- Comparative example 1 28.8 g of sodium hydroxide was dissolved in 227 ml of water, 60.0 g of 2,3-dimercapto-6-methylquinoxaline was added thereto, and the mixture was stirred at room temperature for 1 hour. Then, 692 ml of toluene was added for azeotropic dehydration. After cooling, 4.6 g of tetra-n-butylammonium bromide was added, and a solution of 94.7 g of phenyl chloroformate and 131 ml of toluene was added dropwise at 40-45°C over 60 minutes.
- Table 2 shows the purity and amount of impurities of S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate.
- the purity and amount of impurities of S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate were analyzed by the measurement method described later.
- Tetra-n-butylammonium bromide contained in S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate was analyzed using NMR.
- the chemical shift of S,S-(6-methylquinoxaline-2,3-diyl) dithiocarbonate was 7.91 ppm (1H min) and the chemical shift of tetra-n-butylammonium bromide was 1.00 ppm (12H min). The content was calculated based on the ratio.
- the S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate obtained by the reaction was not only washed, but also contacted with ethyl acetate for a certain period of time or longer to obtain S , S-(6-Methylquinoxaline-2,3-diyl) dithiocarbonate can efficiently remove impurities such as tetra-n-butylammonium bromide and diphenyl carbonate to less than 0.1%. became. As a result, S,S-(6-methylquinoxaline-2,3-diyl)dithiocarbonate with a purity as high as 99.6% could be obtained.
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Abstract
Description
項1. 2,3-ジメルカプト-6-メチルキノキサリンをアルカリ金属塩またはアルカリ土類金属塩とした後、フェニルクロロホーメート類と、相間移動触媒の存在下で反応させ、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを得る工程(反応工程)と、
反応で得られたS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを、酢酸エステル類を用いて精製することを特徴とする精製工程とを含む、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの製造方法。
項2. 酢酸エステル類が、酢酸メチル、酢酸エチル、酢酸n-プロピル、酢酸n-ブチル及び酢酸イソブチルから選択される1種以上である項1に記載の製造方法。
項3. 前記精製工程における酢酸エステル類を用いた精製が、浸漬、再結晶、溶媒抽出のいずれか1種以上である項1または2に記載の製造方法。
反応で得られたS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを、酢酸エステル類を用いて精製することを特徴とする精製工程とを含む、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの製造方法である。本発明は、当該構成を備えることで、高純度なS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを収率よく得ることができる。
本発明の製造方法における反応工程は、2,3-ジメルカプト-6-メチルキノキサリンをアルカリ金属塩またはアルカリ土類金属塩とした後、フェニルクロロホーメート類と、相間移動触媒の存在下で反応させることで、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを得ることができる。反応工程は、例えば、特開平11-80133号公報の記載に沿って行うことができる。
本発明の製造方法における精製工程は、反応工程で得られたS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを、酢酸エステル類を用いて精製することを特徴とするものである。これにより、合成時に用いた原料(相間移動触媒等)や生成する特定の不純物(例えば、炭酸ジフェニル等)をS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの収率よく除去できる。
精製工程において、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネート中に含まれる不純物を効率よく除去できる溶媒を探索するため、次の実験を行った。S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートと炭酸ジフェニルをそれぞれ各溶媒に添加し、溶解性の確認を行った。S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの溶解性が低く、炭酸ジフェニルの溶解性が良いものを〇、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの溶解性が良く、炭酸ジフェニルの溶解性が良いもの、および、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの溶解性が悪く、炭酸ジフェニルの溶解性が悪いものを×とした。結果を表1に示す。
水190mlに水酸化ナトリウム24.0gを溶解し、そこに2,3-ジメルカプト-6-メチルキノキサリン50.0gを添加し、室温で1時間撹拌した。次いでトルエン500mlを加え、共沸脱水を行った。冷却後、テトラ-n-ブチルアンモニウムブロマイド3.9gを加え、40~45℃にてフェニルクロロホーメート78.9gとトルエン95ml溶液を60分間で滴下した。その後、45℃にて3時間撹拌し、反応終了後、80℃で熱時濾過を行い、生成した無機塩を除去した。90℃まで昇温し、固形分を溶解させ、0.1℃毎分で25℃まで降温させ、25℃に達した後に13時間撹拌を続けた後、析出した固体を濾取した。得られた固体47.7g(S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネート純分として、29.6g)に対して、400mlの酢酸エチルを加えて室温で1時間浸漬した後再度濾過を行った。さらに400mlの酢酸エチルを用いて洗浄した後、真空乾燥を経て27.0gのS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートが得られた。収率は48%であった。表2にS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの純度と不純物量を示す。なお、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの純度と不純物量は、後述する測定方法にて分析を行った。
水227mlに水酸化ナトリウム28.8gを溶解し、そこに2,3-ジメルカプト-6-メチルキノキサリン60.0gを添加し、室温で1時間撹拌した。次いでトルエン692mlを加え、共沸脱水を行った。冷却後、テトラ-n-ブチルアンモニウムブロマイド4.6gを加え、40~45℃にてフェニルクロロホーメート94.7gとトルエン131ml溶液を60分間で滴下した。その後、45℃にて3時間撹拌し、反応終了後、80℃で熱時濾過を行い、生成した無機塩を除去した。90℃まで昇温し、固形分を溶解させ、0.1℃毎分で25℃まで降温させ、25℃に達した後に13時間撹拌を続けた。濾過により得られた固体(70.6g)を240mlの酢酸エチルを用いてかけ洗い洗浄した(接触時間:30秒)後、真空乾燥を経て43.8gのS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートが得られた。収率は65%であった。表2にS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの純度と不純物量を示す。なお、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの純度と不純物量は、後述する測定方法にて分析を行った。
S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの純度、並びに S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネート中に含まれる炭酸ジフェニルの量は、高速液体クロマトグラフを用いて、以下の条件にて分析を行った。
使用装置:島津製作所製LC-2030
使用カラム:大阪ソーダ製SP-120-5-ODS-P (4.6mmI.D.×150mm)
流速:1.0mL/min
展開溶媒:MeCN/H2O(比率:1/1)
温度:40℃
波長:254nm
S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートに含まれるテトラ-n-ブチルアンモニウムブロマイドはNMRを用いて、分析を行った。なお、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの化学シフト7.91ppm(1H分)とテトラ-n-ブチルアンモニウムブロマイドの化学シフト1.00ppm(12H分)のプロトン比をもとに含有量を算出した。
使用装置:日本電子製 ECZS-400
重溶媒:DMSO-D6
Claims (3)
- 2,3-ジメルカプト-6-メチルキノキサリンをアルカリ金属塩またはアルカリ土類金属塩とした後、フェニルクロロホーメート類と、相間移動触媒の存在下で反応させ、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを得る工程(反応工程)と、
反応で得られたS,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートを、酢酸エステル類を用いて精製することを特徴とする精製工程とを含む、S,S-(6-メチルキノキサリン-2,3-ジイル)ジチオカーボネートの製造方法。 - 酢酸エステル類が、酢酸メチル、酢酸エチル、酢酸n-プロピル、酢酸n-ブチル及び酢酸イソブチルから選択される1種以上である請求項1に記載の製造方法。
- 前記精製工程における酢酸エステル類を用いた精製が、浸漬、再結晶、溶媒抽出のいずれか1種以上である請求項1または2に記載の製造方法。
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ANONYMOUS: "Agricultural Chemical Abstracts Common Name Quinoxaline (Quinomethionate) "Fungicide"", PESTICIDE ABSTRACT AND EVALUATION REPORT, AGRO-KANESHO COMPANY, LIMITED, JP, JP, pages 1 - 340, XP009539826, Retrieved from the Internet <URL:https://www.acis.famic.go.jp/syouroku/chinomethionat/index.htm> * |
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