CN117049981A - 一种肟菌酯农用杀菌剂制备方法 - Google Patents
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- ONCZDRURRATYFI-TVJDWZFNSA-N trifloxystrobin Chemical compound CO\N=C(\C(=O)OC)C1=CC=CC=C1CO\N=C(/C)C1=CC=CC(C(F)(F)F)=C1 ONCZDRURRATYFI-TVJDWZFNSA-N 0.000 title claims abstract description 48
- 239000005857 Trifloxystrobin Substances 0.000 title claims abstract description 47
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 21
- 239000003899 bactericide agent Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 22
- HJKYXKSLRZKNSI-UHFFFAOYSA-I pentapotassium;hydrogen sulfate;oxido sulfate;sulfuric acid Chemical compound [K+].[K+].[K+].[K+].[K+].OS([O-])(=O)=O.[O-]S([O-])(=O)=O.OS(=O)(=O)O[O-].OS(=O)(=O)O[O-] HJKYXKSLRZKNSI-UHFFFAOYSA-I 0.000 claims abstract description 13
- 239000012425 OXONE® Substances 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 11
- QQGVWMIRCZEUBB-UHFFFAOYSA-N n-[1-[3-(trifluoromethyl)phenyl]ethylidene]hydroxylamine Chemical compound ON=C(C)C1=CC=CC(C(F)(F)F)=C1 QQGVWMIRCZEUBB-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 239000003960 organic solvent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001509 metal bromide Inorganic materials 0.000 claims abstract description 7
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 23
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 17
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical group ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 10
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical group [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- YCINJZQUXAFTQD-ZRDIBKRKSA-N methyl (2e)-2-methoxyimino-2-(2-methylphenyl)acetate Chemical compound CO\N=C(\C(=O)OC)C1=CC=CC=C1C YCINJZQUXAFTQD-ZRDIBKRKSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- LDPXOYHMGOQPIV-UHFFFAOYSA-N methyl 2-[2-(bromomethyl)phenyl]-2-methoxyiminoacetate Chemical compound CON=C(C(=O)OC)C1=CC=CC=C1CBr LDPXOYHMGOQPIV-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005457 ice water Substances 0.000 claims description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- SUBJHSREKVAVAR-UHFFFAOYSA-N sodium;methanol;methanolate Chemical compound [Na+].OC.[O-]C SUBJHSREKVAVAR-UHFFFAOYSA-N 0.000 claims description 2
- YCINJZQUXAFTQD-UHFFFAOYSA-N methyl 2-methoxyimino-2-(2-methylphenyl)acetate Chemical compound CON=C(C(=O)OC)C1=CC=CC=C1C YCINJZQUXAFTQD-UHFFFAOYSA-N 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract description 7
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052794 bromium Inorganic materials 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005893 bromination reaction Methods 0.000 description 9
- 230000031709 bromination Effects 0.000 description 8
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- -1 3- (trifluoromethyl) phenyl Chemical group 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004128 high performance liquid chromatography Methods 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000010907 mechanical stirring Methods 0.000 description 3
- 238000001308 synthesis method Methods 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- LDPXOYHMGOQPIV-JLHYYAGUSA-N methyl (2e)-2-[2-(bromomethyl)phenyl]-2-methoxyiminoacetate Chemical compound CO\N=C(\C(=O)OC)C1=CC=CC=C1CBr LDPXOYHMGOQPIV-JLHYYAGUSA-N 0.000 description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N methyl acetate Chemical compound COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 238000002390 rotary evaporation Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- VRLDVERQJMEPIF-UHFFFAOYSA-N dbdmh Chemical compound CC1(C)N(Br)C(=O)N(Br)C1=O VRLDVERQJMEPIF-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- XUXNAKZDHHEHPC-UHFFFAOYSA-M sodium bromate Chemical group [Na+].[O-]Br(=O)=O XUXNAKZDHHEHPC-UHFFFAOYSA-M 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C249/00—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C249/04—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes
- C07C249/12—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes by reactions not involving the formation of oxyimino groups
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/50—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids the nitrogen atom being doubly bound to the carbon skeleton
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明公开一种肟菌酯农用杀菌剂制备方法,涉及一种农用杀菌剂制备方法,所述制备方法为以(E)‑2‑(2‑甲基苯基)‑2‑甲氧亚胺基乙酸甲酯、单过硫酸氢钾复合盐、金属溴化物为原料,光源激发下,在有机溶剂和水中反应得到(E)‑2‑(2‑溴甲基苯基)‑2‑甲氧亚胺基乙酸甲酯(以下简称肟菌酯中间体),(E)‑2‑(2‑溴甲基苯基)‑2‑甲氧亚胺基乙酸甲酯与间三氟甲基苯乙酮肟进行缩合,得到肟菌酯。本发明的技术方案操作简便,反应条件温和,规避了溴素的泄露风险及对设备的腐蚀风险,可应用于工业生产。
Description
技术领域
本发明涉及一种农用杀菌剂制备方法,具体涉及一种肟菌酯农用杀菌剂制备方法。
背景技术
肟菌酯(英文名称:trifloxystrobin,中文名称:肟菌酯、(2Z)-2-甲氧基亚胺基-2-(2-((1-(3-(三氟甲基)苯基)亚乙基胺基)氧甲基)苯基)乙酸甲酯),CAS号:141517-21-7。该化合物结构最早见于专利US5238956,是一种广谱杀菌剂,通常用于玉米、谷物、棉花等农作物,结构式如下:
目前肟菌酯的主要合成工艺为2-卤代甲基-α-甲氧亚胺基苯乙酸甲酯与间三氟甲基苯乙酮肟进行缩合而成,卤素通常为溴或氯,其中2-卤代甲基-α-甲氧亚胺基苯乙酸甲酯为肟菌酯合成过程中的关键原料。在工业生产过程中,溴化过程相对于氯化过程更加安全、且操作难度降低,更具有普适性。根据文献及专利报道,(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯的溴化方式有以下几种。
合成方法一:使用溴化剂N-溴代琥珀酰亚胺(NBS)或1,3-二溴-5,5-二甲基海因(DBDMH),该类型溴化剂在合成过程中通常要加入引发剂偶氮二异丁腈(AIBN)或过氧化苯甲酰(BPO)来引发自由基反应。徐平平(徐平平. 杀菌剂肟菌酯和吡唑醚菌酯的合成工艺研究[D]. 武汉: 华中师范大学, 2012.)和李仁红(李仁红. 肟菌酯的合成工艺研究[D]. 河北科技大学, 2015.)使用NBS和BPO进行溴化得到目标溴代物;罗正( 罗正, 余淑英, 黄超群, 等. (E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯的合成工艺研究[J]. 精细化工中间体, 2016 (2): 19-21.)等人使用DBDMH和AIBN进行溴化。该方法溴化试剂成本较高,且需加入引发剂,不适宜工业生产。
合成方法二:使用液溴或氢溴酸进行溴化。专利CN 102659623以液溴进行溴化,辅以荧光粉。柴兵(柴兵, 闻冲, 陈晓东, 等. 肟菌酯合成新工艺[J]. 农药, 2013, 52(4):258-259.)等人在普通光源下,使用氢溴酸和过氧化氢进行溴化。该种方式溴化试剂为液体,具有一定的挥发性,投料时易产生损失,同时在生产操作过程中有一定的局限性,设备存在腐蚀风险。
合成方法三:使用含溴的金属盐进行溴化。专利WO2013144924中描述了两种方式,在紫外光或普通可见光照下,一种为溴酸钠和亚硫酸氢钠,另一种为溴化锂或溴化钠或溴化钾和浓硫酸、双氧水共同反应进行溴化。
综合上述溴化方式的优劣,现有溴化反应的选择性比较低,反应速率慢,残留和生成的无机盐比较。
发明内容
本发明的目的是提供一种肟菌酯农用杀菌剂制备方法,本发明使用单过硫酸氢钾复合盐和溴化钾或溴化钠作为溴化试剂,在光源激发下,可快速完成溴化反应,选择性高,反应速率快,水洗即可脱去残留和生成的无机盐,为通过溴化制备肟菌酯中间体提供了新的思路。
本发明的目的是通过以下技术方案实现的:
一种肟菌酯农用杀菌剂制备方法,所述制备方法包括如下步骤:
(1)将(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯和金属溴化物加入有机溶剂和水的混合液中,室温搅拌至完全溶解,光源照射下开始滴加单过硫酸氢钾复合盐饱和水溶液,滴加结束后继续反应至反应液无色后停止反应,反应液分别用饱和碳酸氢钠水溶液和饱和氯化钠水溶液洗涤,无水硫酸镁干燥,经过滤、浓缩、脱溶剂后得到肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯固体;
(2)将肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯固体和间三氟甲基苯乙酮肟完全溶解于N,N-二甲基甲酰胺(DMF)溶液中,室温下滴加甲醇钠甲醇溶液,滴加结束后将反应液加至冰水混合物中,搅拌分散后过滤,干燥,得到肟菌酯,反应方程式如下:
所述的一种肟菌酯农用杀菌剂制备方法,所述单过硫酸氢钾复合盐(Oxone)组成为2KHSO5·KHSO4·K2SO4,(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯与单过硫酸氢钾复合盐、金属溴化物的物质的量比为1:1:1 -1:1.5:1.5;进一步优选的物质的量比为1:1.1:1。
所述的一种肟菌酯农用杀菌剂制备方法,所述金属溴化物为溴化钠或溴化钾。
所述的一种肟菌酯的制备方法,所述有机溶剂为二氯甲烷、1,2-二氯乙烷、氯仿、四氯化碳;(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯与有机溶剂的物质的量比为1:7-1:10;有机溶剂与水的体积比为1:0.5-1:2。
所述的一种肟菌酯农用杀菌剂制备方法,所述光源为自然光源、白炽灯、红外灯、紫外灯和LED灯。
所述的一种肟菌酯农用杀菌剂制备方法,所述肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯固体和间三氟甲基苯乙酮肟的物质的量比为1:1。
所述的一种肟菌酯农用杀菌剂制备方法,所述间三氟甲基苯乙酮肟和甲醇钠的物质的量比为1:1-1:1.1;间三氟甲基苯乙酮肟和N,N-二甲基甲酰胺(DMF)的质量比为1:5-1:10;进一步优选的质量比为1:5。
所述的一种肟菌酯农用杀菌剂制备方法,所述步骤(2)所述的甲醇钠为甲醇钠溶液,甲醇钠的质量分数为28.5%-31.5%。
本发明的优点与效果是:
本发明的技术方案操作简便,反应条件温和,规避了溴素的泄露风险及对设备的腐蚀风险,可应用于工业生产。
实施方式
下面结合实施例对本发明进行详细说明。
实施例1
(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯的制备
在装有机械搅拌和温度计的250 ml 三口瓶中,将10.36 g (0.0500 mol) (E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯和5.95 g (0.0500 mol)溴化钾加入装有29.73 g二氯甲烷和11.22 g水的混合体系中,室温下搅拌至固体完全溶解。称取16.91 g(0.0550mol)单过硫酸氢钾复合盐溶解于69.00 g水中,在晴朗日照条件下,向三口瓶中滴加单过硫酸氢钾复合盐溶液,控制反应温度在40°C,滴加结束后,继续搅拌30分钟后停止反应,反应液分别用饱和碳酸钠溶液和饱和氯化钠溶液洗至中性,分液,有机相有无水硫酸镁干燥后旋蒸除去溶剂,得到肟菌酯中间体粗品(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯。向装有肟菌酯中间体粗品单口瓶中加入20.00 g正己烷,室温下搅拌30分钟后过滤得到11.22 g白色肟菌酯中间体,含量90.96%(HPLC面积法),收率78.46%。(1H NMR (400 MHz,DMSO-d6) δ 7.60 – 7.50 (m, 1H), 7.41 (td, J = 6.7, 1.7 Hz, 2H), 7.25 – 7.16(m, 1H), 4.45 (s, 2H), 3.96 (s, 3H), 3.76 (s, 3H).)
实施例2
(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯的制备
在装有机械搅拌和温度计的250 ml 三口瓶中,将10.36 g (0.05 mol) (E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯和5.14 g(0.05 mol)溴化钠加入装有29.73 g二氯甲烷和11.22 g水的混合体系中,室温下搅拌至固体完全溶解。称取18.44 g (0.06mol)单过硫酸氢钾复合盐溶解于74.00 g水中,在晴朗日照条件下,向三口瓶中滴加单过硫酸氢钾复合盐溶液,控制反应温度在40°C,滴加结束后,继续搅拌60分钟后停止反应,反应液分别用饱和碳酸钠溶液和饱和氯化钠溶液洗至中性,分液,有机相有无水硫酸镁干燥后旋蒸除去溶剂,得到肟菌酯中间体粗品(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯。向装有肟菌酯中间体粗品单口瓶中加入20.00 g正己烷,室温下搅拌30分钟后过滤得到11.51 g白色肟菌酯中间体,含量87.19%(HPLC面积法),收率80.43%。
实施例3
(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯的制备
与实施例1对比,使用相同反应装置及投料量和投料比,仅将光照条件由日光替换为白炽灯对反应体系进行光照,后处理操作与实施例1一致。可得到11.36 g白色肟菌酯中间体,含量91.64%(HPLC面积法),收率79.40%。
实施例4
(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯的制备
与实施例1对比,使用相同反应装置及投料量和投料比,仅将光照条件由日光替换为LED灯对反应体系进行光照,后处理操作与实施例2一致。可得到11.33 g白色肟菌酯中间体,含量90.83%(HPLC面积法),收率79.17%。
实施例5
肟菌酯的制备
向装有机械搅拌的100 ml 三口瓶中加入16.52 g(0.0500 mol)肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯、10.16 g(0.0500 mol)间三氟甲基苯乙酮肟和51.00 g N,N-二甲基甲酰胺(DMF),室温下搅拌至固体全部溶解。向反应体系中缓慢滴加9.45 g(0.0525 mol)质量分数为30%的甲醇钠溶液,滴加结束后继续室温搅拌1小时后停止反应,将反应液加入至高速搅拌的100.00 g冰水混合物中,搅拌分散后将固体过滤,得到19.54 g白色肟菌酯固体,含量93.05%,收率95.67%。(1H NMR (400 MHz, DMSO-d6) δ 7.94– 7.88 (m, 2H), 7.80 – 7.73 (d, J = 7.8 Hz, 1H), 7.68 – 7.60 (t, J = 8.0 Hz,1H), 7.53 – 7.36 (m, 3H), 7.26 – 7.19 (dd, J = 7.3, 1.7 Hz, 1H), 5.10 – 5.05(s, 2H), 3.95 – 3.90 (s, 3H), 3.73 – 3.69 (s, 3H), 2.21 – 2.16 (s, 3H).)。
Claims (8)
1.一种肟菌酯农用杀菌剂制备方法,其特征在于,所述制备方法包括如下步骤:
(1)将(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯和金属溴化物加入有机溶剂和水的混合液中,室温搅拌至完全溶解,光源照射下开始滴加单过硫酸氢钾复合盐饱和水溶液,滴加结束后继续反应至反应液无色后停止反应,反应液分别用饱和碳酸氢钠水溶液和饱和氯化钠水溶液洗涤,无水硫酸镁干燥,经过滤、浓缩、脱溶剂后得到肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯固体;
(2)将肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯固体和间三氟甲基苯乙酮肟完全溶解于N,N-二甲基甲酰胺(DMF)溶液中,室温下滴加甲醇钠甲醇溶液,滴加结束后将反应液加至冰水混合物中,搅拌分散后过滤,干燥,得到肟菌酯,反应方程式如下:
。
2.根据权利要求1所述的一种肟菌酯农用杀菌剂制备方法,其特征在于,所述单过硫酸氢钾复合盐(Oxone)组成为2KHSO5·KHSO4·K2SO4,(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯与单过硫酸氢钾复合盐、金属溴化物的物质的量比为1:1:1 -1:1.5:1.5;进一步优选的物质的量比为1:1.1:1。
3.根据权利要求1所述的一种肟菌酯农用杀菌剂制备方法,其特征在于,所述金属溴化物为溴化钠或溴化钾。
4.根据权利要求1所述的一种肟菌酯的制备方法,其特征在于,所述有机溶剂为二氯甲烷、1,2-二氯乙烷、氯仿、四氯化碳;(E)-2-(2-甲基苯基)-2-甲氧亚胺基乙酸甲酯与有机溶剂的物质的量比为1:7-1:10;有机溶剂与水的体积比为1:0.5-1:2。
5.根据权利要求1所述的一种肟菌酯农用杀菌剂制备方法,其特征在于,所述光源为自然光源、白炽灯、红外灯、紫外灯和LED灯。
6.根据权利要求1所述的一种肟菌酯农用杀菌剂制备方法,其特征在于,所述肟菌酯中间体(E)-2-(2-溴甲基苯基)-2-甲氧亚胺基乙酸甲酯固体和间三氟甲基苯乙酮肟的物质的量比为1:1。
7.根据权利要求1所述的一种肟菌酯农用杀菌剂制备方法,其特征在于,所述间三氟甲基苯乙酮肟和甲醇钠的物质的量比为1:1-1:1.1;间三氟甲基苯乙酮肟和N,N-二甲基甲酰胺(DMF)的质量比为1:5-1:10;进一步优选的质量比为1:5。
8.根据权利要求1所述的一种肟菌酯农用杀菌剂制备方法,其特征在于,所述步骤(2)所述的甲醇钠为甲醇钠溶液,甲醇钠的质量分数为28.5%-31.5%。
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