WO2007112613A1 - Préparation de dérivés d'isothiazolinone n-substitués - Google Patents

Préparation de dérivés d'isothiazolinone n-substitués Download PDF

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WO2007112613A1
WO2007112613A1 PCT/CN2006/000590 CN2006000590W WO2007112613A1 WO 2007112613 A1 WO2007112613 A1 WO 2007112613A1 CN 2006000590 W CN2006000590 W CN 2006000590W WO 2007112613 A1 WO2007112613 A1 WO 2007112613A1
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formula
compound
group
solvent
alkyl
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PCT/CN2006/000590
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English (en)
French (fr)
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Yuechun Jin
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Beijing Tianqing Chemicals Co., Ltd.
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Priority to PCT/CN2006/000590 priority Critical patent/WO2007112613A1/zh
Priority to KR1020087002734A priority patent/KR101017031B1/ko
Priority to CH01859/07A priority patent/CH697358B1/de
Priority to CN2006800247050A priority patent/CN101218216B/zh
Priority to JP2008523100A priority patent/JP4889737B2/ja
Priority to US11/997,963 priority patent/US7893273B2/en
Publication of WO2007112613A1 publication Critical patent/WO2007112613A1/zh
Priority to US13/008,344 priority patent/US8927735B2/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D275/00Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings
    • C07D275/02Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings not condensed with other rings
    • C07D275/03Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • C07C323/50Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
    • C07C323/51Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C323/60Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton with the carbon atom of at least one of the carboxyl groups bound to nitrogen atoms

Definitions

  • the present invention relates to a process for the preparation of isothiazolinone derivatives, and in particular to a process for the preparation of N-substituted isothiazolinone derivatives.
  • Isothiazolinones are a new class of high-efficiency broad-spectrum fungicides with high efficiency, low toxicity, long duration of action, and no harm to the environment. Therefore, it is widely used in industrial water treatment, cosmetics, building materials, adhesives, coatings, medical and health, textiles, photography, detergents, etc., especially as an antifouling agent in marine antifouling coatings.
  • N-substituted isothiazolinone derivatives reported in the literature, but generally include hydrazine, ⁇ '-disubstituted dithiodipropionamide or hydrazine-substituted decylpropionamide. It is reacted with a reagent in an organic solvent.
  • Chinese Patent Application Publication No. CN1634889 and CN1629148 disclose the preparation of oxime-alkoxypropylisothiazolinone and oxime-alkoxyethoxyisothiazolone, respectively, including the corresponding hydrazine, The hydrazine,-disubstituted dithiodipropionamide is reacted with sulfuryl chloride in ethyl acetate.
  • Japanese Patent Application Publication No. 2003-335763 discloses a process for preparing a 2-substituted-4-isothiazolin-3-one, which comprises hydrazine-substituted mercaptopropionamide or hydrazine, hydrazine, -disubstituted
  • the dithiodipropionamide is reacted with a reagent in an ethyl acetate solvent.
  • a process for the preparation of 2-methyl-isothiazolin-3-ones is disclosed in European Patent Publication No. 0 498 347, which comprises the use of hydrazine-methyl-3-mercaptopropionamide in an aromatic hydrocarbon or a halogenated hydrocarbon solvent (e.g., benzene, toluene, Chlorobenzene, chloroform, etc.) react with chlorine.
  • a halogenated hydrocarbon solvent e.g., benzene, toluene, Chlorobenzene, chloroform, etc.
  • a process for the preparation of 2-hydrocarbyl-4-isothiazolin-3-ones is disclosed in European Patent Publication No. 1113012, which comprises the preparation of a hydrazine-hydrocarbylmercaptopropionamide or an oxime, ⁇ '-dihydrocarbyldithiodipropionamide.
  • a solvent having a lower solubility of hydrogen chloride preferably a 13 ⁇ 4 generation aliphatic hydrocarbon, a 13 ⁇ 4 aromatic hydrocarbon or an aliphatic hydrocarbon
  • a chlorinating reagent is reacted with a chlorinating reagent.
  • U.S. Patent No. 5,453,507 discloses the preparation of hydrazine, ⁇ '-dimethyl- or hydrazine, hydrazine-di-n-octyl-4-isothiazolin-3-one, including hydrazine, ⁇ '-disubstituted Dithiodipropionamide
  • the halogenated organic solvent e.g., CH 2 X 2 , CHX 3 , CX 3 CH 3 , CHX 2 CHX 2
  • sulfuryl chloride e.g., CH 2 X 2 , CHX 3 , CX 3 CH 3 , CHX 2 CHX 2
  • the object of the present invention is to improve the preparation method of the existing N-substituted isothiazolinone derivative, reduce the production cost thereof and reduce environmental pollution.
  • the invention provides a process for the preparation of a compound of formula I,
  • R 1 is selected from the group consisting of an alkyl group, a cycloalkyl group, and an aryl group, and R 1 may be further substituted with a group selected from the group consisting of an alkyl group, an aryl group, an alkoxy group, and an aryloxy group;
  • R 2 and R 3 are independently hydrogen or chlorine
  • the method includes:
  • R 1 is as defined above
  • R 1 is as defined above
  • R 1 is selected from C r C 8 alkyl, C 3 -C 8 cycloalkyl, and C 6 -C 10 aryl group, and the R 1 may be further selected from C r C 8 alkyl group a group substituted with a C 6 -C 1() aryl group, a dC 8 alkoxy group, and a C 6 -C 1 () aryloxy group.
  • R 1 may be C r C 8 alkyl, and R 1 may be further substituted by C 6 -C 1Q aryl or C r C 8 alkoxy.
  • R 2 and R 3 may be hydrogen or both.
  • the reaction is at about -10. C to about 75. It is carried out at a temperature of C, more preferably from room temperature to about 45. C is carried out.
  • the method of the present invention eliminates the use of solvents when preparing N-substituted isothiazolinone derivatives, thereby avoiding various problems caused by the use of organic solvents, reducing production costs and reducing environmental pollution. ⁇
  • the invention provides a process for the preparation of a compound of formula (III), which comprises: a compound of formula IV in a methanol solvent,
  • the molar ratio of the compound of formula IV to the compound of formula V in the reaction is from about 1:2.0 to about 2.6.
  • the reaction temperature is preferably about -15. C to about 65° (. Simplified separation and purification process of the product ⁇
  • one aspect of the present invention provides a process for producing an N-substituted isothiazolinone derivative represented by Formula I,
  • R 1 is selected from the group consisting of an alkyl group, a cycloalkyl group, and an aryl group, and R 1 may be further substituted with a group selected from the group consisting of an alkyl group, an aryl group, an alkoxy group, and an aryloxy group;
  • R 2 and R 3 are independently hydrogen or chlorine
  • the method includes:
  • N-substituted 3-mercaptopropionamide of the formula II is obtained without using a solvent
  • R 1 is as defined above
  • R 1 is as defined above, Reacts with u acid chloride.
  • alkyl group as used in the present invention generally means a linear or branched saturated aliphatic hydrocarbon group, preferably
  • C o alkyl more preferably ( ⁇ -- 8 alkyl, such as decyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, Positive heptyl, n-octyl and so on.
  • ⁇ -- 8 alkyl such as decyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, Positive heptyl, n-octyl and so on.
  • cycloalkyl group as used in the present invention generally means a saturated alicyclic hydrocarbon group. It is preferably a C 3 -C 1Q cycloalkyl group, more preferably a C 3 -C 8 cycloalkyl group such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group or the like.
  • the "aryl group” as used in the present invention generally means an aromatic hydrocarbon group, preferably C 6 - C 2 .
  • the aryl group is more preferably a C 6 -C 1() aryl group such as a phenyl group and a decyl group, and more preferably a phenyl group.
  • no solvent used as used in the present invention means that other materials for dissolving the reactants, intermediates or final products are not additionally added except for the reactants.
  • sulfuryl chloride serves both as a reactant and as a solvent in the initial stage of the reaction.
  • the isothiazolinone derivative formed by the reaction is used as a reaction solvent, so that it is not necessary to add another organic solvent.
  • the target product can be isolated and purified by well known techniques including, but not limited to, recrystallization and solvent extraction.
  • R 1 is -C 8 alkyl, and R 1 may be substituted by C 6 -C 1Q aryl or C r C 8 alkoxy. More preferably, R 1 is C r C 8 alkyl group, particularly preferably n-octyl.
  • R 2 and R 3 are both hydrogen or both.
  • the process comprises reacting a compound of formula (II) with decanoyl chloride. More preferably, the molar ratio of the compound of the formula (II) to decanoyl chloride is about 1:1-11.
  • chlorine gas may be used simultaneously as a chlorinating agent.
  • the process of the invention comprises: reacting a compound of formula (III) with sulfuryl chloride, optionally in the presence of chlorine. More preferably, the molar ratio of the compound of the formula (III), sulfuryl chloride and chlorine is about 1:1-11:0-11. Particularly preferably, the molar ratio of the compound of the formula (III), sulfuryl chloride and chlorine is about 1:1-3:5-7.
  • the process of the invention further comprises the step of preparing a compound of formula (III), said steps comprising:
  • the molar ratio of the compound of the formula IV to the compound of the formula V is about 1:2.0-2.6.
  • the reaction temperature is preferably about -15. C to about 65 ° C, more preferably from about 5 ° C to room temperature.
  • the reaction time is from about 3 hours to about 5 days.
  • Another aspect of the invention provides a process for the preparation of a compound of formula III, which comprises: dimethyl 3,3,-dithiodipropionate of formula IV in a sterol solvent,
  • R 1 is C r C 8 alkyl, and R 1 may be substituted by C 6 -C 1() aryl or C r C 8 alkoxy. More preferably, R 1 is C r C 8 alkyl group, particularly preferably n-octyl.
  • the molar ratio of the compound of the formula IV to the compound of the formula V in the reaction is from about 1:2.0 to 2.6.
  • the reaction temperature is preferably about -15. C to about 65 ° C, more preferably from about 5 ° C to room temperature.
  • the reaction time is from about 3 hours to about 5 days.
  • methanol is also a reaction product of the compound of the formula IV and the compound of the formula V
  • the introduction of other impurities by using decyl alcohol as a solvent simplifies the separation and purification process of the product.
  • the reaction product The particles are enlarged to be easily separated from the mother liquor.
  • the reaction mother liquor can be reused, and the sterol is easily recovered by distillation, reducing waste emissions.
  • N-n-octylisothiazolinone including N-n-octyl-4-isothiazolin-3-one (OIT)

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

N-取代的异噻唑啉酮衍生物的制备
技术领域
本发明涉及异噻唑啉酮衍生物的制备方法,特别涉及 N-取代的异 噻唑啉酮衍生物的制备方法。 背景技术
异噻唑啉酮类化合物是一类新型的高效广谱杀菌剂, 具有高效、 低毒、 药效持续时间长、 对环境无害等优点。 因此广泛应用于工业水 处理、 化妆品、 建筑材料、 胶粘剂、 涂料、 医疗卫生、 纺织、 照相、 洗涤剂等领域, 特别是可作为海洋防污涂料中的防污剂。
迄今为止, 文献中报导的制备 N-取代的异噻唑啉酮衍生物的方法 艮多, 但通常都包括使 Ν,Ν'-二取代的二硫代二丙酰胺或 Ν-取代的巯 基丙酰胺在有机溶剂中与) ¾化试剂反应。
例如, 公开号为 CN1634889和 CN1629148的中国专利申请分别 公开了 Ν-烷氧基丙基异噻唑啉酮和 Ν-烷氧乙氧基丙基异噻唑淋酮的 制备方法, 包括使对应的 Ν,Ν,-二取代的二硫代二丙酰胺与硫酰氯在 乙酸乙酯中反应。 '
公开号为特开 2003-335763的日本专利申请公开了制备 2-取代的 -4-异噻唑啉 -3-酮的制备方法, 包括使 Ν-取代的巯基丙酰胺或 Ν,Ν,- 二取代的二硫代二丙酰胺在乙酸乙酯溶剂中与) ¾化试剂反应。
欧洲专利公开第 0498347号中公开了制备 2-甲基-异噻唑啉 -3-酮 的方法, 包括使 Ν-甲基 -3-巯基丙酰胺在芳烃或卤代烃溶剂(如苯, 甲 苯, 氯苯、 氯仿等等)中与氯气反应。
欧洲专利公开第 1113012 号中公开了制备 2-烃基 -4-异噻唑啉 -3- 酮的方法, 包括使 Ν-烃基巯基丙酰胺或 Ν,Ν'-二烃基二硫代二丙酰胺 在对氯化氢溶解度较低的溶剂 (优选 1¾代脂肪烃、 1¾代芳烃或脂肪烃) 中与氯化试剂反应。
美国专利第 5,453,507号公开了制备 Ν,Ν'-二甲基-或 Ν,Ν,-二正辛 基 -4-异噻唑啉 -3-酮的方法, 包括使 Ν,Ν'-二取代的二硫代二丙酰胺在 卤化的有机溶剂(如 CH2X2、 CHX3、 CX3CH3、 CHX2CHX2)中与硫酰氯 反应。
然而, 上述方法中有机溶剂的使用引起了诸多问题。 一方面, 溶 剂的使用降低了反应釜的单位体积利用率, 进而降低了生产率; 另一 方面, 溶剂的使用、 后处理及回收增加了生产成本; 又一方面, 溶剂 的使用可能会引入其它杂质, 使产物的分离和纯化更加复杂; 再一方 面,有机溶剂特别是芳烃和! ¾代烃的使用会污染环境,增大环境压力。 发明内容
本发明的目的是对现有的 N-取代的异噻唑啉酮衍生物制备方法 进行改进, 降低其生产成本, 减少环境污染。
一方面, 本发明提供了通式 I化合物的制备方法,
Figure imgf000004_0001
其中 R1选自烷基、 环烷基和芳基, 且 R1上可进一步被选自烷基、 芳基、 烷氧基和芳氧基的基团取代;
R2和 R3独立地为氢或氯,
所述方法包括:
在不使用溶剂的条件下, 使通式 II化合物,
Figure imgf000004_0002
其中 R1的定义如前所述,
或通式 III化合物,
Figure imgf000005_0001
其中 R1的定义如前所述,
与 υ酰氯反应。
在一优选实施方案中, R1选自 CrC8烷基、 C3-C8环烷基和 C6-C10 芳基, 且 R1上可进一步被选自 CrC8烷基、 C6-C1()芳基、 d-C8烷氧基 和 C6-C1()芳氧基的基团取代。 进一步优选地, R1可为 CrC8烷基, 且 R1可进一步被 C6-C1Q芳基或 CrC8烷氧基取代。
在另一优选实施方案中, R2和 R3可同时为氢或同时为氯。
优选地, 所述反应在约 -10。C到约 75。C的温度下进行, 更优选在 室温到约 45。C进行。
本发明方法在制备 N-取代的异噻唑啉酮衍生物时, 无需使用溶 剂, 从而避免了因使用有机溶剂引起的各种问题, 降低了生产成本, 减少了环境污染。 ·
另一方面, 本发明提供了通式 (III)化合物的制备方法, 包括: . 在甲醇溶剂中, 使式 IV化合物,
Figure imgf000005_0002
与通式 V化合物反应,
H2N—— 1 (V) 其中 R1的定义如前所述。
在一优选实施方案中, 所述反应中式 IV化合物与通式 V化合物 的摩尔比约为 1 :2.0-2.6。 反应温度优选为约 -15。C到约 65° (。 简化 了产物的分离和纯化过程< 具体实施方式
如上所述, 本发明的一个方面提供了通式 I所示的 N-取代的异噻 唑啉酮衍生物的制备方法,
Figure imgf000006_0001
其中 R1选自烷基、 环烷基和芳基, 且 R1上可进一步被选自烷基、 芳基、 烷氧基和芳氧基的基团取代;
R2和 R3独立地为氢或氯,
所述方法包括:
在不使用溶剂的条件下,使通式 II所示的 N-取代的 3 -巯基丙酰胺,
Figure imgf000006_0002
其中 R1的定义如前所述,
或通式 III所示的 Ν,Ν,-二取代的 3,3,-二硫代二丙酰胺,
Figure imgf000006_0003
其中 R1的定义如前所述, 与 u酰氯反应。
本发明所述的 "烷基 "通常指直链或支链的饱和脂肪烃基, 优选为
C o烷基, 更优选为(^-€8烷基, 例如曱基、 乙基、 正丙基、 异丙基、 正丁基、 异丁基、 叔丁基、 正戊基、 正己基、 正庚基、 正辛基等等。
本发明所述的 "环烷基"通常指饱和的脂环烃基。 优选为 C3-C1Q环烃 基, 更优选为 C3-C8环烃基, 例如环丙基、 环丁基、 环戊基等等。
本发明所述的"芳基"通常指芳香族烃基, 优选为 C6-C2。芳基, 更优 选为 C6-C1()芳基, 例如苯基和蔡基, 更优选为苯基。
本发明所述的"不使用溶剂 "指除反应物外, 不额外添加其它用于 溶解反应物、 中间体或最终产物的材料。
本发明方法中硫酰氯既作为反应物, 又作为反应初期的溶剂。 随 着反应进行, 硫酰氯消耗完后, 则以反应生成的异噻唑啉酮衍生物为 反应溶剂, 因而无需添加其它有机溶剂。
在本发明的具体实施方案中, 目标产物可通过公知技术进行分离 和提纯, 包括但不限于重结晶和溶剂萃取。
在一优选实施方案中, R1为 -C8烷基, 且 R1可被 C6-C1Q芳基或 CrC8烷氧基取代。 更优选地, R1为 CrC8烷基, 特别优选为正辛基。
在另一优选实施方案中, R2和 R3同时为氢或同时为氯。
在本发明的某些优选实施方案中,所述方法包括使通式 (II)化合物 与^ Τυ酰氯反应。 更优选地, 通式 (II)化合物与 υ酰氯的摩尔比约为 1:1-11。
在本发明的其它实施方案中, 除硫酰氯外, 还可同时使用氯气作 为氯化试剂。
在一优选实施方案中, 本发明方法包括: 任意地在氯气存在下, 使通式 (III)化合物与硫酰氯反应。 更优选地, 通式 (III)化合物、硫酰氯 和氯气的摩尔比约为 1:1-11 :0-11。 特别优选地, 通式 (III)化合物、 硫 酰氯和氯气的摩尔比约为 1:1-3:5-7。
在一特别优选的实施方案中, 本发明方法还包括制备通式 (III)化 合物的步驟, 所述步骤包括:
在曱醇溶剂中, 使式 IV的 3,3,-二硫代二丙酸二曱酯, (IV)
Figure imgf000008_0001
与通式 V所示的胺反应,
H2N— R1 (V) 其中 R1的定义如前所述。
尤其特别优选地, 式 IV化合物与通式 V化合物的摩尔比约为 1 :2.0-2.6。 反应温度优选为约 -15。C到约 65°C, 更优选为约 5°C到室 温。 反应时间为约 3小时到约 5天。
本发明的另一方面提供了制备通式 III化合物的方法, 包括: 在曱醇溶剂中, 使式 IV的 3,3,-二硫代二丙酸二甲酯,
Figure imgf000008_0002
与通式 V所示的胺反应,
H2N—— R1 (V) 其中 R1的定义如前所述。
优选地, R1为 CrC8烷基, 且 R1可被 C6-C1()芳基或 CrC8烷氧基 取代。 更优选地, R1为 CrC8烷基, 特别优选为正辛基。
优选所述反应中式 IV 化合物与通式 V 化合物的摩尔比为约 1:2.0-2.6。 反应温度优选为约 -15。C到约 65°C, 更优选为约 5°C到室 温。 反应时间为约 3小时到约 5天。
在本发明方法中, 由于甲醇同时也是式 IV化合物和通式 V化合 物的反应产物, 因此以曱醇为溶剂可避免引入其它杂质, 简化了产物 的分离和纯化过程。 特别是与以水为溶剂的情况相比, 反应产物的颗 粒增大, 从而易于与母液分离。 反应母液可重复使用, 且曱醇易于通 过蒸馏回收, 减少了废物排放。 实施例
以下将参照具体实施例对本发明的优选实施方案进行详细说明, 但应当理解本发明并不限于这些具体的实施例。 实施例 1
N,N,-二正辛基 -3,3,-二硫代二丙酰胺的制备 反应式如下:
(SCH2CH2C02CH3)2 + 2C8H17NH2 - (SCH2CH2CONHC8H17)2 + 2CH3OH 在 1000ml反应瓶中加入 300ml的甲醇, 随后加入 238g (1摩尔) 3,3,-二硫代二丙酸二甲酯和 280g (2.17摩尔)正辛胺, 在 5。C下搅拌反 应 5天 (:必要时以氮气保护)。 将反应混合物冷却至 -10。C, 离心分离出 Ν,Ν,-二正辛基 -3,3,-二硫代二丙酰胺固体 329g (纯度 > 95。/0, 收率 76%) 反应母液蒸馏法回收甲醇后循环使用。
实施例 1
N-正辛基异噻唑啉酮(包括 N-正辛基 -4-异噻唑啉 -3-酮 (OIT)
和 N-正辛基 _45_二氯 _4_异噻唑啉 _3_酮 (DCOIT))的制备 反应式如下:
(SCH2CH2CONHC8H17)2 + S02C12 + Cl2 ——►
Figure imgf000010_0001
(OIT) (DCOIT) 在 1000ml的反应瓶中加入硫酰氯 200ml (330g, 2.44摩尔), 搅拌 下 6.5小时内逐步加入!^,1^,-二正辛基-3,3,-二硫代二丙酰胺6488 (1.5 摩尔, 约每小时 100g)。 3小时后开始通入氯气, 每小时通入 50g持续 13小时, 共约 650g (9.15摩尔)。 反应混合物自行升温到 40。C以后使 用盐水冷却降温, 保持反应温度在 40-45。C。 氯气通入完成后继续保 持同样温度搅拌 2小时。
在另一个 1000ml反应瓶中以 50。C的热水洗涤所得的反应混合物 至弱酸性,必要时以碳酸氢钠中和过量的酸。以甲醇重结晶,得到 190g DCOIT (純度〉95%)。 以石油醚与甲醇分步萃取分离重结晶母液中所含 的 OIT和 DCOIT,得到 OIT 61g (纯度 > 93%,收率 19%)和 DCOIT 49g (纯度 > 95%), DCOIT收率合计 56.5%。
虽然以上具体描述了本发明的某些优选实施方案和实施例, 但本 领域所属技术人员应当理解, 在不脱离本发明基本精神和范围的前提 下可对本发明实施方案进行各种修改和替换, 而这些修改和替换均应 包括在本发明的等同范围内。

Claims

权利要求书
1. 通式 I化合物的制备方法,
Figure imgf000011_0001
其中 R1选自 CrC8烷基、 -¾环烷基和 C6-C1()芳基, 且 R1上可 进一步被选自 CrC8烷基、 C6-C1()芳基、 CrC8烷氧基和 C6-C1()芳氧基 的基团取代;
R2和 R3独立地为氢或氯,
所述方法包括:
在不使用溶剂的条件下, 使通式 II化合物,
Figure imgf000011_0002
其中 的定义如前所述,
或通式 III化合物,
Figure imgf000011_0003
其中 R1的定义如前所述,
与 u酰氯反应。
2. 如权利要求 1所述的方法, 其中 R1为 CrC8烷基, 且 R1可进 一步被 - 。芳基或 d-C8烷氧基取代。
3. 如权利要求 2所述的方法, 其中 R1为 CrC8烷基。
4. 如权利要求 3所述的方法,其中 R2和 R3同时为氢或同时为氯。
5. 如权利要求 1-4中任一权利要求所述的方法, 其中所述反应在 -10°~75°C进行。
6. 如权利要求 5 所述的方法, 其中所述方法包括使通式 (Π)化合 物与硫酰氯反应, 且通式 (II)化合物与硫酰氯的摩尔比约为 1 :1-11。
7. 如权利要求 5所述的方法, 其中所述方法包括: 任意地在氯气 存在下, 使通式 (III)化合物与^酰氯反应, 且通式 (III)化合物、 硫酰氯 和氯气的摩尔比约为 1:1-11:0-11。
8. 如权利要求 7所述的方法, 其中所述方法还包括制备通式 (III) 化合物的步驟, 所述步驟包括:
在曱醇溶剂中, 使式 IV化合物,
Figure imgf000012_0001
与通式 V化合物反应,
H2N—— R1 (V) 其中 R1的定义如前所述。
9. 如权利要求 8所述的方法, 其中所述式 IV化合物与通式 V化 合物的摩尔比约为 1:2.0-2.6。
10. 如权利要求 9所述的方法,其中所述式 IV化合物与通式 V化 合物的反应在 -15°~65°C进行。
11. 制备通式 (III)化合物的方法,
Figure imgf000013_0001
其中: R1选自 CrC8烷基、 C3-C8环烷基和 C6-C1()芳基, 且 R1上 可进一步被选自 CrC8烷基、 C6-C1Q芳基、 CrC8烷氧基和 C6-C1()芳氧 基的基团取代,
所述方法包括:
在曱醇溶剂中, 使式 IV化合物,
0
II
-S— CH2—— CH2— C— 0— CH (IV)
与通式 V化合物反应,
¾N—— R1 (V) 其中 R1的定义如前所述。
12. 如权利要求 11所述的方法, 其中所述式 IV化合物与通式 V 化合物的摩尔比约为 1:2.0-2.6。
13. 如权利要求 11或 12所述的方法,其中所述式 IV化合物与通 式 V化合物的反应在 -15。~65°C进行。
PCT/CN2006/000590 2006-04-03 2006-04-03 Préparation de dérivés d'isothiazolinone n-substitués WO2007112613A1 (fr)

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CN2006800247050A CN101218216B (zh) 2006-04-03 2006-04-03 N-取代的异噻唑啉酮衍生物的制备
JP2008523100A JP4889737B2 (ja) 2006-04-03 2006-04-03 N置換イソチアゾリノン誘導体の製造
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