EP2702040A1 - Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle - Google Patents

Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle

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Publication number
EP2702040A1
EP2702040A1 EP12717115.5A EP12717115A EP2702040A1 EP 2702040 A1 EP2702040 A1 EP 2702040A1 EP 12717115 A EP12717115 A EP 12717115A EP 2702040 A1 EP2702040 A1 EP 2702040A1
Authority
EP
European Patent Office
Prior art keywords
formula
iii
thiocyanate
propene
dichloro
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.)
Withdrawn
Application number
EP12717115.5A
Other languages
German (de)
English (en)
Inventor
Thomas Himmler
Matthias Decker
Ralf Dunkel
Peter Gerdes
Martin Littmann
Norbert Lui
Albert Schnatterer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Intellectual Property GmbH
Original Assignee
Bayer Intellectual Property GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Intellectual Property GmbH filed Critical Bayer Intellectual Property GmbH
Priority to EP12717115.5A priority Critical patent/EP2702040A1/fr
Publication of EP2702040A1 publication Critical patent/EP2702040A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C331/00—Derivatives of thiocyanic acid or of isothiocyanic acid
    • C07C331/16—Isothiocyanates
    • C07C331/18—Isothiocyanates having isothiocyanate groups bound to acyclic carbon atoms
    • C07C331/22—Isothiocyanates having isothiocyanate groups bound to acyclic carbon atoms of an unsaturated carbon skeleton

Definitions

  • the present invention relates to a process for the preparation of 2-chloroallyl thiocyanate of the formula (I) and 2-chloroallyl isothiocyanate of the formula (II).
  • 2-chloroallyl thiocyanate of the formula (I) is a known compound (see, for example, EP 0761649). It is also already known that 2-chloroallyl thiocyanate of the formula (I) can be prepared by reacting a 2,3-dihalogeno-1-propene, preferably 2,3-dichloro-1-propene, of the formula (III)
  • M is a metal cation or an ammonium group and n is from 1 to 4, corresponding to the charge number of the cation, in a diluent.
  • suitable diluents for the known processes are acetonitrile (EP 446913, CN 1401646) or toluene, optionally with the addition of a phase transfer catalyst (Shanghai Huagong 27 (2002) 25-27, J. Agric. Food Chem. 56 (2008) 10805-10810 ).
  • a phase transfer catalyst Shanghai Huagong 27 (2002) 25-27, J. Agric. Food Chem. 56 (2008) 10805-10810 .
  • the use of such diluents is disadvantageous for a technical process.
  • the dilution of the starting materials can lead to a significant reduction in the reaction rate and thus to an extension of the required reaction time.
  • a diluent also requires additional workup steps.
  • the diluent must be separated by distillation, care being taken to recover it in such purity that it can be recycled back to the process. Otherwise, a costly and possibly environmentally harmful disposal is necessary.
  • M is a metal cation or an ammonium group and n is 1 to 4 in accordance with the charge number of the cation, in the presence of a phase transfer catalyst of the general formula (V)
  • R 1 , R 2 , R 3 and R 4 independently of one another are hydrogen, C 1 -C 24 -alkyl, benzyl or C 1 -C 10 -aryl, the latter optionally substituted by halogen, C 1 -C 6 -alkyl, C 1 -C 6 -alkoxy, C 1 -C 4 -alkyl Ce- alkylamino, C 1 -C 6 -dialkylamino, hydroxy or phenyl and
  • X is an anion, without diluent or in the presence of only a very small amount of diluent of up to 15 weight percent, based on 2,3-dichloropropene of formula (III), and simultaneously in the presence of an excess of 10 to 200 mole percent of 2 , 3-dichloro-1-propene of the formula (III), based on the thiocyanate of the formula (IV).
  • Suitable diluents which may be used are polar and nonpolar organic diluents and water.
  • examples include hydrocarbons such as toluene, xylenes, hexane, heptane, methylcyclohexane; halogenated hydrocarbons, such as dichloromethane, 1, 2-dichloroethane; Alcohols such as methanol, ethanol, propanol, isopropanol, butanol; Esters, such as methyl acetate, ethyl acetate, butyl acetate; Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and nitriles such as acetonitrile, butyronitrile, isobutyronitrile.
  • the process according to the invention is preferably carried out by reacting 2,3-dichloro-1-propene
  • M is Li + , Na + , K + or NH 4 + and n is 1, in the presence of a phase transfer catalyst of the general formula (V) R1
  • R 1 , R 2 , R 3 and R 4 independently of one another represent hydrogen, C 1 -C 24 -alkyl, benzyl or phenyl and
  • X is an anion from the series fluoride, chloride, bromide, hydrogen sulfate, hydroxide or acetate, in the presence of 0 to 10 percent by weight of diluent, based on 2,3-dichloro-1-propene of the formula (III), and simultaneously in the presence an excess of 10 to 200 mole percent of 2,3-dichloro-1-propene of the formula (III), based on the thiocyanate of the formula (IV).
  • Preferred diluents which may be used are toluene, methylcyclohexane, dichloromethane, methanol, ethanol, propanol, isopropanol, butanol, methyl acetate, ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, acetonitrile, butyronitrile, isobutyronitrile and water Application.
  • no further diluent is used in the reaction.
  • the total amount of diluent then results from the sum of the diluent contents of the educts of the formula (III) and of the thiocyanate.
  • this total amount is less than 10 or preferably less than 5 weight percent based on the compound of formula (III).
  • the process according to the invention is particularly preferably carried out by reacting 2,3-dichloro-1-propene of the formula (III)
  • M is Na + or NH 4 and n is 1, in the presence of a phase transfer catalyst of the general formula (V)
  • R 1 , R 2 , R 3 and R 4 independently of one another represent hydrogen, C 1 -C 24 -alkyl, benzyl or phenyl and
  • X is an anion from the series chloride, bromide, hydrogen sulfate or hydroxide, in the presence of 0 to 5 percent by weight of diluent, based on 2,3-dichloro-1-propene of the formula (III), and simultaneously in the presence of an excess of 30 to 100 mole percent of 2,3-dichloro-1-propene of the formula (III), based on the thiocyanate of the formula (IV), is reacted.
  • Optional diluents used include toluene, dichloromethane, methanol, ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, acetonitrile, butyronitrile, isobutyronitrile and water.
  • the inventive method has advantages over the known prior art. Thus eliminating the need for its processing and possibly disposal by the substantial omission of a diluent. At the same time, the space-time yield of the method according to the invention is higher than that of the prior art methods.
  • the inventive method is carried out at temperatures between 30 and 150 ° C. Preference is given to working at temperatures between 50 and 100 ° C.
  • the process of the invention is usually carried out at atmospheric pressure, but can also be carried out under elevated or reduced pressure.
  • the reaction time in the process according to the invention is between 0, 1 and 10 hours. Preference is given to working between 0.5 and 7 hours, more preferably between 1 and 5 hours.
  • phase transfer catalyst of the general formula (V) can be varied within wide limits in the process according to the invention. It is customary to use amounts of from 0.1 to 10% by weight, based on 2,3-dichloro-1-propene of the formula (III). Preferably used amounts between 1 and 7 weight percent.
  • Suitable phase transfer catalysts of the general formula (V) are, for example: tetrabutylammonium fluoride, chloride, bromide, iodide, acetate, hydrogen sulfate, tetraethylammonium bromide, iodide, methyltributylammonium chloride, bromide, iodide, acetate, hydrogensulfate , Benzyldodecyldimethylammonium chloride, bromide, benzyltriethylammonium bromide, chloride, dodecyltrimethylammonium chloride, bromide, tetradecyltrimethylammonium chloride, bromide, methyltrioctylammonium chloride, methyl-1-tridecylammonium chloride,
  • 1-Methyl trioctylammonium chloride (trade name Aliquat ® 336; is in a mixture with methyl tridecylammoniumchlorid before ⁇ methyl-tridecylammoniumchlorid, bromide, tetraoctylammonium bromide, chloride, dodecyltrimethylammonium chloride, bromide, tetradecyl trimethyl ammonium chloride, bromide, didecyl-dimethyl- ammonium chloride, bromide and benzyldodecyldimethylammonium chloride or bromide.
  • Aliquat ® 336 is in a mixture with methyl tridecylammoniumchlorid before ⁇ methyl-tridecylammoniumchlorid, bromide, tetraoctylammonium bromide, chloride, dodecyltrimethylammonium chloride, bromide
  • phase transfer catalyst of the general formula (V) may optionally be omitted if the 2,3-dichloro-1-propene of the formula (III) used for the reaction was not purified by distillation and thus already contains sufficient amount of a phase transfer catalyst as a result of its technical preparation process.
  • the 2,3-dichloro-1-propene of the formula (III) is usually prepared by reacting 1,2,3-trichloropropane of the formula (VI) with a base:
  • Suitable bases here are organic and inorganic bases.
  • suitable organic bases are trimethylamine, triethylamine, tributylamine, pyridine, 5-ethyl-2-methylpyridine or quinoline.
  • Suitable inorganic bases include, for example, alkali metal hydroxides such as NaOH and KOH, alkaline earth metal hydroxides such as Ca (OH) 2, alkali hydrogen carbonates such as NaHCO 3 and KHCO3, or alkali metal carbonates such as Na2CÜ3, K2CO3 or CS2CO3 in question.
  • a base such as NaOH or KOH
  • a phase transfer catalyst is used to achieve a sufficient reaction rate. If the workup of the 2,3-dichloro-1-propene of the formula (III) is limited to a simple phase separation, the 2,3-dichloro-1-propene contains at least partly the phase transfer catalyst used for its preparation.
  • the amount of residue after distillation is 313.6 g and consists according to analysis by quantitative 'H-NMR spectroscopy to 82.3 weight percent of 2-Chlorallylthiocyanat of formula (I) and 2-Chlorallylisothiocyanat of formula (II), which a yield of 97% of theory based on sodium thiocyanate results.
  • the mixture is stirred 150 g of distilled 2,3-dichloro-l-propene (GC analysis: 97.3%>ig; water (KF): ⁇ 0.1%>) for 30 minutes with 6 g of Aliquat ® 336 and 50 ml Water and then separates the phases.
  • This pretreated 2,3-dichloro-1-propene (water (KF): 0.6%) is used together with 333.3 g of technical grade 2,3-dichloro-1-propene (GC analysis: 89.4%) % water (KF): 0.45%) in a 2-liter jacketed reaction vessel with stirrer and reflux condenser. 165.46 g of sodium thiocyanate (98% strength) are added with stirring.
  • the amount of residue after distillation is 288.7 g and consists according to GC analysis to 17.8 area percent of 2-Chlorallylthiocyanat of formula (I) and 64.4 area percent of 2-Chlorallylisothiocyanat of formula (II), which a yield of 89% of theory, based on sodium thiocyanate, gives.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne un procédé de préparation de l'isothiocyanate de 2-chloroallyle à partir du 2,3-dichloro-1-propène, dans lequel le 2,3-dichloro-1-propène est mis à réagir avec un thiocyanate en présence d'un catalyseur de transfert de phase, sans diluant ou en présence d'une quantité allant jusqu'à 15 pour cent en poids rapporté au 2,3-dichloropropène et simultanément en présence d'un excédent allant de 10 à 200 pour cent en moles de 2,3-dichloro-1-propène rapporté au thiocyanate. La présente invention concerne en outre un procédé partant du 1,2,3-trichloropropane.
EP12717115.5A 2011-04-26 2012-04-24 Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle Withdrawn EP2702040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12717115.5A EP2702040A1 (fr) 2011-04-26 2012-04-24 Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11163718 2011-04-26
EP12717115.5A EP2702040A1 (fr) 2011-04-26 2012-04-24 Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle
PCT/EP2012/057431 WO2012146569A1 (fr) 2011-04-26 2012-04-24 Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle

Publications (1)

Publication Number Publication Date
EP2702040A1 true EP2702040A1 (fr) 2014-03-05

Family

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EP12717115.5A Withdrawn EP2702040A1 (fr) 2011-04-26 2012-04-24 Procédé de préparation du thiocyanate de 2-chloroallyle et de l'isothiocyanate de 2-chloroallyle

Country Status (9)

Country Link
US (1) US8785673B2 (fr)
EP (1) EP2702040A1 (fr)
JP (1) JP2014516936A (fr)
KR (1) KR20140023374A (fr)
CN (1) CN103502210A (fr)
BR (1) BR112013027675A2 (fr)
IL (1) IL229031A0 (fr)
MX (1) MX2013012377A (fr)
WO (1) WO2012146569A1 (fr)

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CN106278969B (zh) * 2016-06-03 2018-09-04 江西邦浦医药化工有限公司 一种绿色合成1-异硫氰酸基-2-氯-2-丙烯的方法
CN108892630A (zh) * 2018-06-21 2018-11-27 岳阳景嘉化工有限公司 一种1-异硫氰酸基-2-氯-2-丙烯的合成方法
CN108484524A (zh) * 2018-06-21 2018-09-04 岳阳景嘉化工有限公司 一种氯甲基硫氮茂的合成方法
CN109438304B (zh) * 2018-12-12 2021-03-16 湖南海利常德农药化工有限公司 一种2-氯丙烯基异硫氰酸酯的制备方法
CN110240555A (zh) * 2019-06-24 2019-09-17 宁夏贝利特生物科技有限公司 一种1-异硫氰酸基-2-氯-2-丙烯的合成方法
CN112191270A (zh) * 2020-10-14 2021-01-08 湖南莱万特化工有限公司 1，2，3-三氯丙烷转化2，3-二氯丙烯中的催化剂及应用方法
CN114539114B (zh) * 2022-02-26 2023-11-24 河北野田农用化学有限公司 异酯连续化生产工艺及反应器

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Publication number Priority date Publication date Assignee Title
ZA753527B (en) * 1974-07-24 1976-04-28 Merck & Co Inc 1.3.4-thiadiazole compounds
US5180833A (en) 1990-03-16 1993-01-19 Takeda Chemical Industries, Ltd. Process for the preparation of chlorothiazole derivatives
IN181779B (fr) 1995-09-12 1998-09-19 Takeda Chemical Industries Ltd
CN1401646A (zh) 2001-08-08 2003-03-12 南通江山农药化工股份有限公司 一种杀虫化合物及生产方法

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
KR20140023374A (ko) 2014-02-26
JP2014516936A (ja) 2014-07-17
US20140107367A1 (en) 2014-04-17
BR112013027675A2 (pt) 2016-12-27
MX2013012377A (es) 2013-12-06
US8785673B2 (en) 2014-07-22
IL229031A0 (en) 2013-12-31
CN103502210A (zh) 2014-01-08
WO2012146569A1 (fr) 2012-11-01

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