CN101835742A - 制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 - Google Patents
制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 Download PDFInfo
- Publication number
- CN101835742A CN101835742A CN200880112820A CN200880112820A CN101835742A CN 101835742 A CN101835742 A CN 101835742A CN 200880112820 A CN200880112820 A CN 200880112820A CN 200880112820 A CN200880112820 A CN 200880112820A CN 101835742 A CN101835742 A CN 101835742A
- Authority
- CN
- China
- Prior art keywords
- propionic acid
- fluorophenoxy
- aprotic solvent
- polar aprotic
- phenoxy group
- 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
- 238000000034 method Methods 0.000 title claims description 17
- ROBSGBGTWRRYSK-SNVBAGLBSA-N (2r)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoic acid Chemical class C1=CC(O[C@H](C)C(O)=O)=CC=C1OC1=CC=C(C#N)C=C1F ROBSGBGTWRRYSK-SNVBAGLBSA-N 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- -1 cyhalofop ester Chemical class 0.000 claims abstract description 25
- 239000003880 polar aprotic solvent Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003444 phase transfer catalyst Substances 0.000 claims abstract description 6
- BTBFCBQZFMQBNT-UHFFFAOYSA-N 3,4-difluorobenzonitrile Chemical compound FC1=CC=C(C#N)C=C1F BTBFCBQZFMQBNT-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 22
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 18
- 238000004821 distillation Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- 229910052783 alkali metal Inorganic materials 0.000 claims description 13
- 239000011541 reaction mixture Substances 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 8
- 239000012044 organic layer Substances 0.000 claims description 8
- 235000019260 propionic acid Nutrition 0.000 claims description 8
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 8
- AQIHDXGKQHFBNW-ZCFIWIBFSA-N (2r)-2-(4-hydroxyphenoxy)propanoic acid Chemical compound OC(=O)[C@@H](C)OC1=CC=C(O)C=C1 AQIHDXGKQHFBNW-ZCFIWIBFSA-N 0.000 claims description 7
- 150000003151 propanoic acid esters Chemical class 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 230000029936 alkylation Effects 0.000 claims description 2
- 238000005804 alkylation reaction Methods 0.000 claims description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- 238000003809 water extraction Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 230000004907 flux Effects 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- AQIHDXGKQHFBNW-UHFFFAOYSA-N 2-(4-hydroxyphenoxy)propanoic acid Chemical compound OC(=O)C(C)OC1=CC=C(O)C=C1 AQIHDXGKQHFBNW-UHFFFAOYSA-N 0.000 abstract description 2
- 150000001350 alkyl halides Chemical class 0.000 abstract 1
- 230000002152 alkylating effect Effects 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 18
- TYIYMOAHACZAMQ-CQSZACIVSA-N Cyhalofop-butyl Chemical group C1=CC(O[C@H](C)C(=O)OCCCC)=CC=C1OC1=CC=C(C#N)C=C1F TYIYMOAHACZAMQ-CQSZACIVSA-N 0.000 description 11
- 239000002002 slurry Substances 0.000 description 9
- 239000005502 Cyhalofop-butyl Substances 0.000 description 8
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 4
- 150000004714 phosphonium salts Chemical class 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001721 carbon Chemical group 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- MPPPKRYCTPRNTB-UHFFFAOYSA-N 1-bromobutane Chemical compound CCCCBr MPPPKRYCTPRNTB-UHFFFAOYSA-N 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 229910052728 basic metal Inorganic materials 0.000 description 2
- 150000003818 basic metals Chemical class 0.000 description 2
- BTMVHUNTONAYDX-UHFFFAOYSA-N butyl propionate Chemical compound CCCCOC(=O)CC BTMVHUNTONAYDX-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- USJRLGNYCQWLPF-UHFFFAOYSA-N chlorophosphane Chemical compound ClP USJRLGNYCQWLPF-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 125000001475 halogen functional group Chemical group 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 2
- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-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
- 238000012797 qualification Methods 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 description 2
- YUTGTAVBFRENHX-UHFFFAOYSA-N 5,5-dibutyloctadecane Chemical compound CCCCCCCCCCCCCC(CCCC)(CCCC)CCCC YUTGTAVBFRENHX-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- AJSHDAOMUKXVDC-UHFFFAOYSA-N butan-1-amine;sulfuric acid Chemical compound CCCC[NH3+].OS([O-])(=O)=O AJSHDAOMUKXVDC-UHFFFAOYSA-N 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- LSEFCHWGJNHZNT-UHFFFAOYSA-M methyl(triphenyl)phosphanium;bromide Chemical compound [Br-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(C)C1=CC=CC=C1 LSEFCHWGJNHZNT-UHFFFAOYSA-M 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- DAZMQARMQFEKQY-UHFFFAOYSA-L oxalate;tetramethylazanium Chemical compound C[N+](C)(C)C.C[N+](C)(C)C.[O-]C(=O)C([O-])=O DAZMQARMQFEKQY-UHFFFAOYSA-L 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- REPWBKQJAMXHFL-UHFFFAOYSA-N phenylphosphane;hydrobromide Chemical class [Br-].[PH3+]C1=CC=CC=C1 REPWBKQJAMXHFL-UHFFFAOYSA-N 0.000 description 1
- 239000012451 post-reaction mixture Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 230000006340 racemization Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- ZXUCBXRTRRIBSO-UHFFFAOYSA-L tetrabutylazanium;sulfate Chemical compound [O-]S([O-])(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC.CCCC[N+](CCCC)(CCCC)CCCC ZXUCBXRTRRIBSO-UHFFFAOYSA-L 0.000 description 1
- YMBCJWGVCUEGHA-UHFFFAOYSA-M tetraethylammonium chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC YMBCJWGVCUEGHA-UHFFFAOYSA-M 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- KLBOFRLEHJAXIU-UHFFFAOYSA-N tributylazanium;chloride Chemical compound Cl.CCCCN(CCCC)CCCC KLBOFRLEHJAXIU-UHFFFAOYSA-N 0.000 description 1
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
- C07C253/34—Separation; Purification
-
- 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
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
Landscapes
- 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
通过下列步骤制备氰氟草酯类(Cyhalofop esters):在极性非质子溶剂(任选含有相转移催化剂)中偶联2-(4-羟基苯氧基)-丙酸与3,4-二氟苯甲腈与碱,以烷基卤进行烷基化,除去极性非质子溶剂(任选使用氰氟草酯类为熔剂),通过水提取(aqueous extraction)不含溶剂的熔融氰氟草酯类来除去盐,并通过减压加热除去残余水分。
Description
技术领域
本发明涉及制备R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法。
背景技术
美国专利4,897,481揭露了一种使制备R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类时发生的消旋作用最小化的方法,该方法包括使R-(+)-2-(4-羟基苯氧基)丙酸的碱金属盐与3,4-二氟苯甲腈(3,4-DFBN)于碱金属碳酸盐存在时在极性非质子溶剂(特别是二甲基亚砜)中接触,接着用烷基卤酯化所得R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸盐。
发明内容
本发明涉及制备下式的R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法。
其中R表示C1-C8烷基,
该方法包括:
a)通过使极性非质子溶剂中的R-(+)-2-(4-羟基苯氧基)丙酸与至少2个当量的碱金属碳酸盐接触,形成R-(+)-2-(4-羟基苯氧基)-丙酸的二(碱金属盐),其中所述极性非质子溶剂的偶极矩至少为2或介电常数至少为7,标准沸点(normal boiling point)小于175℃;
b)通过使步骤a)的R-(+)-2-(4-羟基-苯氧基)丙酸二(碱金属盐)反应混合物与3,4-二氟苯甲腈偶联,形成R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸碱金属盐;
c)通过用烷基卤使步骤b)的R-(+)-2-4-(4-氰基-2-氟苯氧基)苯氧基)-丙酸碱金属盐反应混合物烷基化,形成R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯;
d)通过以下方式除去并回收极性非质子溶剂:向步骤c)的反应混合物中加入预先制备的干燥的熔融的R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯,以及将极性非质子溶剂从混合物中蒸馏,或者在搅动时将极性非质子溶剂从混合物中蒸馏除去;
e)通过用温水萃取步骤d)的蒸馏残渣(distillation bottom)并分离盐水与有机层,从步骤d)的蒸馏残渣中除去盐;以及
f)通过减压蒸馏步骤e)的有机层来除去低沸点组分,如水和未反应的3,4-二氟苯甲腈。
在本发明一个优选实施方案中,步骤b)中的R-(+)-2-(4-羟基苯氧基)丙酸的二(碱金属盐)与3,4-DFBN的偶联反应在相转移催化剂的存在下进行。
在本文全文中,除非另外指明,否则所有的温度均为摄氏温度,所有的百分比均为重量百分比。
除非另外有具体限定,否则本文中所使用的术语“烷基”的范围包括直链、支链和环状部分。
除非另外有具体限定,否则本文中所使用的术语“卤素”及其衍生术语“卤代(halo)”和“卤化物(halogen)”是指氯、溴和碘。
本文中所使用的术语“碱金属”是指周期表第IA族的金属。优选的碱金属为锂、钠和钾。
本文中所使用的术语“极性非质子溶剂”具体指这样的极性非质子溶剂:其具有足够的极性以至具有至少为2的偶极矩或至少为7的介电常数,并具有足够的挥发性以至具有小于175℃的标准沸点。这种极性非质子溶剂包括,例如:乙腈、丙腈、丙酮、甲基乙基酮、甲基丙基酮、甲基异丁基酮、乙酸2-甲氧基乙基酯,二甲基亚砜、二甲基乙酰胺等,其中特别优选乙腈。
术语“相转移催化剂”是指通过将反应物从一个相转移到另一个相来催化反应的物质。适合用于本发明方法的相转移催化剂包括季铵盐和鏻盐(phosphonium salt)。合适的季铵盐和鏻盐的碳原子总含量通常为至少4个碳原子至31个碳原子,优选为4个碳原子至16个碳原子。目前,由于成本和可商购性的原因,铵盐比鏻盐更优选。合适的催化剂为四甲基溴化铵、四乙基氯化铵、甲基三丁基氯化铵、四丁基硫酸氢铵、苯甲基三丁基氯化铵、苯甲基三甲基氟化铵、草酸双(四甲基铵)(bis-(tetramethyl ammonium)oxalate)、十二烷基三甲基溴化铵、四丁基硫酸铵、甲基三苯基溴化鏻(methyltriphenyl phosphonium bromide)、三丁基十四烷基氯化鏻、十四烷基氯化鏻,等等。
R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸丁基酯是呈旋光活性的稻除草剂,其通用名为氰氟草酯(cyhalofop-butyl),以商品名CleanerTM和ClincherTM(Dow AgroSciences LLC的商标)销售。
在本发明方法的第一步中,R-(+)-2-(4-羟基苯氧基)丙酸经至少两当量的碱金属碳酸盐中和。通常,碱金属碳酸盐在极性非质子溶剂中浆化。向所得浆液中缓慢地加入经加热的R-(+)-2-(4-羟基苯氧基)苯氧基)丙酸在极性非质子溶剂的溶液。反应在50-80℃的温度下进行,并且以保持浆液悬浮良好和CO2生成可控(manageable)的速率来控制添加速率和混合强度。
在本发明方法的第二步中,于50-80℃的温度将0.9至1.1当量的3,4-DFBN加入第一步的反应混合物中。将温度升高至120-150℃,并且保持在该温度直到反应物完全转化为R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)-丙酸碱金属盐。3,4-DFBN可以以熔融态或以在极性非质子溶剂中的溶液的形式添加。通常优选的是将催化量的相转移催化剂加入至该步骤中,所述催化量通常为基于3,4-DFBN重量的1-5重量%。尽管该步骤可以在混合物的沸点进行,但是有利的是在更高的温度(elevated temperature)进行,这导致压力高达100磅每平方英寸表压(pounds per square inch gauge)(psig)(790kPa).
在本发明方法的第三步中,将1.0至1.2当量的烷基卤加入第二步的反应混合物中,保持温度为80-110℃,并保持在该温度直到R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸碱金属盐转化为相应的烷基酯。尽管该步能够在混合物的沸点进行,但是仍然有利的是反应在更高的温度下进行,这导致压力高达50psig(446kPa)。
在本发明方法的第四步中,通过蒸馏将极性非质子溶剂从反应混合物中除去,并回收用于后续的批次(subsequent batches)。当第三步的烷基化反应完成后,冷却反应混合物,并加入约125-250重量%(基于3,4-DFBN的重量计)的预先制备的熔融的R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯作为熔剂(flux),以改善蒸馏期间盐的悬浮性(suspension)。减压蒸馏混合物直到几乎所有的极性非质子溶剂从顶部(overhead)除去。通常,蒸馏在50-350mm Hg(6.7-46.7kPa)的低压以及90-130℃的底部温度条件下进行。可以在除去一部分极性非质子溶剂后加入熔剂。任选地,如果搅动足以保持盐的悬浮,则无需加入熔剂。
在本发明方法的第五步中,将第四步的蒸馏残渣冷却至50-70℃,并向蒸馏后的浆液中加入足够温热的水,以制备30-35%的碱金属卤化物盐在水相中的溶液。滗去有机层,并用额外的近似量的温水于50-70℃再次洗涤,并再次分离各层。
在本发明方法的最后一步中,由第五步萃取得到的、主要含有熔融R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯的有机层通过减压蒸馏有机层除去残余水分和所有剩余的3,4-DFBN而干燥。通常,于10-100mmHg(1.3-13.3kPa)的低压下将有机层加热至90-130℃的温度。经干燥的熔融R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯适合用于作为工业级物料销售,并且可以任选经过过滤。
具体实施方案
下述实施例诠释了本发明:
实施例1:R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸正丁酯[氰氟草酯]
250毫升(mL)的底部排液(bottom-drain)圆底烧瓶配备有顶置搅拌器、冷水冷凝器、热电偶和受控红外加热灯,向该烧瓶中加入42.1克(g)的R-(+)-2-(羟基苯氧基)-丙酸[MAQ-Acid]和71.6g的乙腈。搅拌该混合物,并加热至75℃,此时MAQ-Acid完全溶解。
1升的夹套式底部排液圆柱形烧瓶配有顶置搅拌器、加热/冷却浴和冷水冷凝器,向该烧瓶中加入94.7g的乙腈、2.53g的水和74.7g的粉末状碳酸钾(-325目)。混合该混合物,并加热至50℃。
接着,通过Teflon管直接从溶液烧瓶中向K2CO3浆液中经2小时缓慢滴加MAQ-Acid溶液。添加完成后,将温度升高至75℃并保持1小时。
将该浆液转移至325-mL的高压釜(pressure vessel)中,该高压釜配有顶置搅拌器、热电偶、受控加热套、压力释放装置(pressure relief)和压力表。然后,向该浆液中加入33.1g的3,4-DFBN。将高压釜密封,开始混合,然后将混合物加热至135℃,保持7小时。压力达到53psig(467kPa)。
将高压釜冷却至60℃,打开高压釜,加入35.1g的正丁基溴。然后再次密封高压釜,开始混合,然后将混合物加热至100℃,保持6小时。压力达到19psig(232kPa)。
将高压釜冷却至60℃,将内含物转移至500-mL的三颈底部排水圆底烧瓶,该烧瓶配备有顶置搅拌器、热电偶、受控加热套、带有冷水冷凝器和250mL圆底接收器的6英寸Vigreux柱、带有125mL圆底接收器的第二干冰/丙酮冷凝器、和带有可变真空控制装置的真空泵。向该浆液中,加入61.9g预先制备的氰氟草酯(含量测定=96%)。开始混合,抽真空至200mm Hg(26.7kPa),加热除去乙腈。当底部温度到达80℃,将真空度缓慢减少至60mm Hg(8kPa)。当底部温度到达120℃,停止蒸馏。
将浆液冷却至60℃,并加入147g的50℃水。搅拌两相混合物15分钟,同时保持温度为50℃。停止混合,并使所得两相沉降15分钟。排出底层的含盐水相。向上层相中加入105g的50℃水,并再次搅拌混合物15分钟,同时保持温度为50℃。停止混合,并使所得两相混合物沉降15分钟。排出下层氰氟草酯相并留置一边,除去上层水层。将氰氟草酯相倒回烧瓶中。抽真空至60mm Hg(8kPa),并加热以蒸馏除去夹带的水分。当温度到达120℃,停止蒸馏。
该最终产物的质量为141g(含量测定为96%的氰氟草酯),有效产率为92%。R(+)/S(-)氰氟草酯异构体的比率为98.5/1.5。
实施例2:在步骤b中使用催化剂[四甲基氯化铵(TMAC)]
所用设备为600-mL高压釜,其配备有顶置搅拌器、热电偶、加热套、压力释放装置和压力表。向该高压釜中加入135g预先制备的R-(+)-2-(4-羟基苯氧基)丙酸二钾盐、152g的乙腈、39.8g的3,4-DFBN和1.67g的TMAC。密封高压釜,开始混合。将高压釜加热至120℃,并保持7小时。压力达到约30psig。
将高压釜冷却至约60℃并打开,并加入42.4g的正丁基溴。再次密封高压釜,开始混合,加热高压釜至85℃,并保持6小时。压力达到约8psig(156.5kPa)。
收集并分析所得反应后的浆液(质量=371g)。对R-(+)氰氟草酯进行的产物测定为21.9%,这构成了不可分离的产率94.9%(标准化为97.0%)。在反应后的混合物中,R(+)/S(-)氰氟草酯异构体的比率为99.7/0.3。
Claims (2)
1.制备下式的R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法,
其中,R表示C1-C8烷基,
所述方法包括:
a)通过使极性非质子溶剂中的R-(+)-2-(4-羟基苯氧基)丙酸与至少2个当量的碱金属碳酸盐接触,形成R-(+)-2-(4-羟基苯氧基)-丙酸的二(碱金属盐),其中所述极性非质子溶剂的偶极矩至少为2或介电常数至少为7,正常沸点小于175℃;
b)通过使步骤a)的R-(+)-2-(4-羟基-苯氧基)丙酸二(碱金属盐)反应混合物与3,4-二氟苯甲腈偶联,形成R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸碱金属盐;
c)通过用烷基卤使步骤b)的R-(+)-2-4-(4-氰基-2-氟苯氧基)苯氧基)-丙酸碱金属盐反应混合物烷基化,形成R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯;
d)通过以下方式除去并回收极性非质子溶剂:向步骤c)的反应混合物中加入预先制备的、干燥的、熔融的R-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸烷基酯,以及将极性非质子溶剂从混合物中蒸馏除去,或者在搅动时将极性非质子溶剂从混合物中蒸馏除去;
e)通过用温水萃取步骤d)的蒸馏残渣并分离盐水与有机层,从步骤d)的蒸馏残渣中除去盐;以及
f)通过减压蒸馏步骤e)的有机层来除去低沸点组分,如水和未反应的3,4-二氟苯甲腈。
2.根据权利要求1的方法,其中,R-(+)-2-(4-羟基苯氧基)丙酸二(碱金属盐)与3,4-二氟苯甲腈的偶联在相转移催化剂的存在下进行。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25607P | 2007-10-24 | 2007-10-24 | |
US61/000,256 | 2007-10-24 | ||
PCT/US2008/079838 WO2009055278A1 (en) | 2007-10-24 | 2008-10-14 | Improved process for the manufacture of r-(+)-2-(4-(4-cyano-2-fluorophenoxy)phenoxy)propionic acid esters |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410535485.4A Division CN104387294A (zh) | 2007-10-24 | 2008-10-14 | 制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101835742A true CN101835742A (zh) | 2010-09-15 |
Family
ID=40011057
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200880112820A Pending CN101835742A (zh) | 2007-10-24 | 2008-10-14 | 制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 |
CN201410535485.4A Pending CN104387294A (zh) | 2007-10-24 | 2008-10-14 | 制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410535485.4A Pending CN104387294A (zh) | 2007-10-24 | 2008-10-14 | 制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 |
Country Status (8)
Country | Link |
---|---|
US (2) | US8071804B2 (zh) |
JP (1) | JP5444237B2 (zh) |
KR (1) | KR101546110B1 (zh) |
CN (2) | CN101835742A (zh) |
BR (1) | BRPI0818376A2 (zh) |
CO (1) | CO6331331A2 (zh) |
TW (1) | TWI436972B (zh) |
WO (1) | WO2009055278A1 (zh) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102181496A (zh) * | 2011-03-01 | 2011-09-14 | 安徽安生生物化工科技有限责任公司 | 一种酶促合成氰氟草酯的方法 |
CN105566158A (zh) * | 2016-02-02 | 2016-05-11 | 江苏丰山集团股份有限公司 | 一种氰氟草酯的制备方法 |
CN107183028A (zh) * | 2017-07-08 | 2017-09-22 | 北京燕化永乐生物科技股份有限公司 | 一种乙基(2r)‑2‑[4‑(4‑氰基2‑氟苯氧基)‑苯氧基]丙酸酯及制备与应用 |
CN107253912A (zh) * | 2017-05-02 | 2017-10-17 | 江苏永凯化学有限公司 | 氰氟草酯的合成方法 |
CN107673995A (zh) * | 2017-08-23 | 2018-02-09 | 连云港世杰农化有限公司 | 一种合成氰氟草酯的方法 |
CN107698461A (zh) * | 2017-09-26 | 2018-02-16 | 连云港世杰农化有限公司 | 一种合成氰氟草酯的方法 |
CN109651140A (zh) * | 2018-12-12 | 2019-04-19 | 江苏中旗科技股份有限公司 | 一种氰氟草酯原药的合成方法 |
CN115490617A (zh) * | 2022-10-14 | 2022-12-20 | 江苏丰山集团股份有限公司 | 一种低成本高光纯含量氰氟草酯的制备工艺 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0818376A2 (pt) | 2007-10-24 | 2015-04-14 | Dow Agrosciences Llc | Processo aperfeiçoado para a fabricação dos ésteres do ácido (r)-(+)-2-(4-(4-ciano-2-fluorofenóxi) fenóxi propiônico |
CN105601538B (zh) * | 2016-02-02 | 2018-01-23 | 江苏丰山集团股份有限公司 | 一种氰氟草酯的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0089517A1 (de) * | 1982-03-18 | 1983-09-28 | CELAMERCK GmbH & Co. KG | Verfahren zur Herstellung von Diphenyläthern |
EP0344746A2 (en) * | 1988-05-31 | 1989-12-06 | Dowelanco | An improved process for the minimization of racemization in the preparation of optically active ((aryloxy) phenoxy) propionate herbicides |
US4894085A (en) * | 1987-08-05 | 1990-01-16 | The Dow Chemical Company | Herbicidal cyanofluorophenoxyphenoxyalkanoic acids and derivatives thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6906006B1 (en) * | 1988-11-23 | 2005-06-14 | Bayer Aktiengesellschaft | N-arly-substituted nitrogen-containing heterocycles, processes and novel intermediates for their preparation, and their use as herbicides and plant growth regulators |
JPH0543535A (ja) * | 1991-08-09 | 1993-02-23 | Mitsubishi Petrochem Co Ltd | フエニルエーテル誘導体の製造法 |
GB0322917D0 (en) * | 2003-09-30 | 2003-11-05 | Syngenta Ltd | Chemical process |
US20100093699A1 (en) | 2006-12-20 | 2010-04-15 | Astrazeneca Ab | Compounds and uses thereof - 177 |
BRPI0818376A2 (pt) | 2007-10-24 | 2015-04-14 | Dow Agrosciences Llc | Processo aperfeiçoado para a fabricação dos ésteres do ácido (r)-(+)-2-(4-(4-ciano-2-fluorofenóxi) fenóxi propiônico |
-
2008
- 2008-10-14 BR BRPI0818376-7A patent/BRPI0818376A2/pt not_active IP Right Cessation
- 2008-10-14 WO PCT/US2008/079838 patent/WO2009055278A1/en active Application Filing
- 2008-10-14 US US12/251,005 patent/US8071804B2/en active Active
- 2008-10-14 JP JP2010531131A patent/JP5444237B2/ja active Active
- 2008-10-14 CN CN200880112820A patent/CN101835742A/zh active Pending
- 2008-10-14 KR KR1020107008882A patent/KR101546110B1/ko active IP Right Grant
- 2008-10-14 CN CN201410535485.4A patent/CN104387294A/zh active Pending
- 2008-10-23 TW TW097140617A patent/TWI436972B/zh not_active IP Right Cessation
-
2010
- 2010-04-22 CO CO10047562A patent/CO6331331A2/es active IP Right Grant
-
2011
- 2011-02-24 US US13/034,054 patent/US9598356B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0089517A1 (de) * | 1982-03-18 | 1983-09-28 | CELAMERCK GmbH & Co. KG | Verfahren zur Herstellung von Diphenyläthern |
US4894085A (en) * | 1987-08-05 | 1990-01-16 | The Dow Chemical Company | Herbicidal cyanofluorophenoxyphenoxyalkanoic acids and derivatives thereof |
EP0344746A2 (en) * | 1988-05-31 | 1989-12-06 | Dowelanco | An improved process for the minimization of racemization in the preparation of optically active ((aryloxy) phenoxy) propionate herbicides |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102181496A (zh) * | 2011-03-01 | 2011-09-14 | 安徽安生生物化工科技有限责任公司 | 一种酶促合成氰氟草酯的方法 |
CN105566158A (zh) * | 2016-02-02 | 2016-05-11 | 江苏丰山集团股份有限公司 | 一种氰氟草酯的制备方法 |
CN107253912A (zh) * | 2017-05-02 | 2017-10-17 | 江苏永凯化学有限公司 | 氰氟草酯的合成方法 |
CN107253912B (zh) * | 2017-05-02 | 2020-07-31 | 江苏永凯化学有限公司 | 氰氟草酯的合成方法 |
CN107183028A (zh) * | 2017-07-08 | 2017-09-22 | 北京燕化永乐生物科技股份有限公司 | 一种乙基(2r)‑2‑[4‑(4‑氰基2‑氟苯氧基)‑苯氧基]丙酸酯及制备与应用 |
CN107673995A (zh) * | 2017-08-23 | 2018-02-09 | 连云港世杰农化有限公司 | 一种合成氰氟草酯的方法 |
CN107698461A (zh) * | 2017-09-26 | 2018-02-16 | 连云港世杰农化有限公司 | 一种合成氰氟草酯的方法 |
CN109651140A (zh) * | 2018-12-12 | 2019-04-19 | 江苏中旗科技股份有限公司 | 一种氰氟草酯原药的合成方法 |
CN115490617A (zh) * | 2022-10-14 | 2022-12-20 | 江苏丰山集团股份有限公司 | 一种低成本高光纯含量氰氟草酯的制备工艺 |
CN115490617B (zh) * | 2022-10-14 | 2024-03-26 | 江苏丰山生化科技有限公司 | 一种低成本高光纯含量氰氟草酯的制备工艺 |
Also Published As
Publication number | Publication date |
---|---|
US8071804B2 (en) | 2011-12-06 |
US9598356B2 (en) | 2017-03-21 |
WO2009055278A1 (en) | 2009-04-30 |
CN104387294A (zh) | 2015-03-04 |
JP2011502127A (ja) | 2011-01-20 |
CO6331331A2 (es) | 2011-10-20 |
TWI436972B (zh) | 2014-05-11 |
JP5444237B2 (ja) | 2014-03-19 |
US20110152560A1 (en) | 2011-06-23 |
KR20100075535A (ko) | 2010-07-02 |
KR101546110B1 (ko) | 2015-08-20 |
BRPI0818376A2 (pt) | 2015-04-14 |
US20090112015A1 (en) | 2009-04-30 |
TW200922914A (en) | 2009-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101835742A (zh) | 制备r-(+)-2-(4-(4-氰基-2-氟苯氧基)苯氧基)丙酸酯类的改进方法 | |
CN106278850B (zh) | 丙硫菌唑中间体1-氯-1-乙酰基环丙烷的合成方法 | |
TW201229024A (en) | Method for producing 2-bromo-4,5-dialkoxy benzoic acid | |
CA2587672A1 (en) | Method for the preparation of sevoflurane | |
CN101823941B (zh) | 一种1-羟基-3,5-二甲基-4-氯苯的绿色工业化制备方法 | |
WO2009101898A1 (ja) | ベンズアルデヒド化合物の製造方法 | |
CN107935921A (zh) | 一种2,3‑二氯吡啶的制备方法 | |
JP2001508066A (ja) | カルボキシル化合物およびそれの誘導体の製造 | |
CN1047281A (zh) | 制备3,5,6-三氯吡啶-2-醇的改进方法 | |
CN105712879B (zh) | 一种含三氟甲基的羧酸酯的制备方法 | |
CN1061029C (zh) | 四氟邻苯二甲酸酐的生产方法 | |
CN105073722B (zh) | (甲基)丙烯酸缩水甘油酯的制造方法 | |
TW200815330A (en) | Process for higher purity decabromodiphenyl oxide | |
TWI567053B (zh) | 於烷基全氟烯醚之生產中分離組成分之製程 | |
CN1046709C (zh) | 2-取代吡啶类的钯催化的乙烯取代反应及所用中间体 | |
CN108026017A (zh) | 酰卤溶液的制造方法、混合溶液及单酯化合物的制造方法 | |
IL176512A (en) | Process for preparing high-purity, halogen-free o-phthalaldehyde | |
WO2007086330A1 (ja) | ハロゲン置換ベンゼンジメタノールの製造法 | |
CN1276905C (zh) | 用二氯代酚与氯代烷合成二氯代芳醚的方法 | |
CN111377831A (zh) | 一种除草剂氰氟草酯的制备方法 | |
CN104496899B (zh) | 孟鲁司特钠的中间体的合成方法 | |
CN103974935B (zh) | 五氟硫基苯甲酸的制造方法 | |
JP3487081B2 (ja) | 芳香族アミド化合物の製造法 | |
US9975832B2 (en) | Process for the preparation of ospemifene and fispemifene | |
JP5222726B2 (ja) | ラセミ体アルキル−5−ハロペンタ−4−エンカルボン酸または−カルボン酸エステルの調製方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C12 | Rejection of a patent application after its publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100915 |