JP2003342252A - Method for producing alkanesulfonyl chloride - Google Patents

Method for producing alkanesulfonyl chloride

Info

Publication number
JP2003342252A
JP2003342252A JP2002193985A JP2002193985A JP2003342252A JP 2003342252 A JP2003342252 A JP 2003342252A JP 2002193985 A JP2002193985 A JP 2002193985A JP 2002193985 A JP2002193985 A JP 2002193985A JP 2003342252 A JP2003342252 A JP 2003342252A
Authority
JP
Japan
Prior art keywords
producing
mercaptan
alkanesulfonyl chloride
ejector
disulfide
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
Application number
JP2002193985A
Other languages
Japanese (ja)
Inventor
Kunio Hara
邦男 原
Hideaki Omori
秀彰 大森
Jun Mitsui
順 光井
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.)
Toyo Kasei Kogyo Co Ltd
Original Assignee
Toyo Kasei Kogyo Co Ltd
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 Toyo Kasei Kogyo Co Ltd filed Critical Toyo Kasei Kogyo Co Ltd
Priority to JP2002193985A priority Critical patent/JP2003342252A/en
Publication of JP2003342252A publication Critical patent/JP2003342252A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for industrially and continuously producing an alkanesulfonyl chloride with high purity in high yield without by-producing a main chain-chlorinated product. <P>SOLUTION: This for producing the alkanesulfonyl chloride by reacting a mercaptan or a disulfide with chlorine uses a loop-shaped reactor with an ejector. The alkanesulfonyl chloride is continuously formed by feeding the mercaptan or the disulfide to an aqueous solvent before entering the ejector while feeding the aqueous solvent to the reactor and circulating the aqueous solvent, to disperse or dissolve the mercaptan or the disulfide, and blowing chlorine gas from a sucking part of the ejector to react them. As a result, the alkanesulfonyl chloride is continuously produced without by-producing the main chain-chlorinated product. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、アルカンスルホニ
ルクロリドを主鎖クロロ化物を副生することなく、高純
度かつ高収率で工業的しかも連続的に製造する方法に関
する。アルカンスルホニルクロリドは、一般工業薬品及
び医薬品の中間体として有用な化合物である。
TECHNICAL FIELD The present invention relates to a method for industrially and continuously producing alkanesulfonyl chloride with high purity and high yield without producing a main chain chlorinated product as a by-product. Alkanesulfonyl chloride is a compound useful as an intermediate for general industrial chemicals and pharmaceuticals.

【0002】[0002]

【従来の技術】従来、アルカンスルホニルクロリドの製
造方法としては、メルカプタン又はジスルフィドに塩素
を反応させる方法が知られている。その際、塩素を理論
量より多く吹き込むと、主鎖クロロ化物が副生するた
め、90%以上の生成収率は困難であり、又、生成した
アルカンスルホニルクロリドは、中間体或いは副生物が
存在するために精製蒸留を必要とするため、収率は更に
低下する。なお、バッチ生産のため、生産効率が低いこ
とにより製造コストが高くなるなど、工業的な方法とし
ては問題点がある。
2. Description of the Related Art Conventionally, as a method for producing alkanesulfonyl chloride, a method of reacting chlorine with mercaptan or disulfide has been known. At that time, if chlorine is blown in more than the theoretical amount, the main chain chlorinated product is by-produced, so that a production yield of 90% or more is difficult, and the produced alkanesulfonyl chloride has intermediates or by-products. The yield is further reduced because it requires purification distillation. Since it is a batch production, there is a problem as an industrial method such as a high production cost due to low production efficiency.

【0003】[0003]

【発明が解決しようとする課題】本発明は、上記した従
来技術の問題点を解消し、工業的に容易かつ安全にしか
も高収率で高品質のアルカンスルホニルクロリドを製造
する方法を提供することにある。
DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and provides a method for industrially easily and safely producing a high-quality alkanesulfonyl chloride in a high yield. It is in.

【0004】[0004]

【課題を解決するための手段】容器に水又は酸性溶媒を
仕込み、循環ポンプを使用して仕込んだ溶媒をエジェク
ターを介して循環させ、循環液の中にメルカプタンを供
給して分散又は溶解させる。そして、エジェクターの吸
引部より塩素を吹き込んで反応させ、液中より分液して
下層に生成した主鎖クロロ化物が副生することがなく、
又、中間体やその他の副生物の生成が少ない、高収率、
高純度で低コストのアルカンスルホニルクロリドを生成
させることを特徴とする。生成したアルカンスルホニル
クロリドは、液中より分液して下層に生成するために過
剰塩素の影響を受けないため、主鎖クロロ化物が副生す
ることがないと考えられる。連続的にアルカンスルホニ
ルクロリドを製造することができる。
[Means for Solving the Problems] Water or an acidic solvent is charged into a container, the solvent charged using a circulation pump is circulated through an ejector, and mercaptan is supplied into the circulating liquid to be dispersed or dissolved. Then, chlorine is blown from the suction part of the ejector to react, and the main chain chlorinated product generated in the lower layer by separating from the liquid is not by-produced,
In addition, there is little production of intermediates and other by-products, high yield,
It is characterized by producing high-purity and low-cost alkanesulfonyl chloride. The generated alkanesulfonyl chloride is separated from the liquid and is generated in the lower layer, so that it is not affected by excess chlorine, and thus it is considered that the main chain chlorinated product is not produced as a by-product. The alkanesulfonyl chloride can be continuously produced.

【0005】[0005]

【発明の実施の形態】以下に本発明を詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below.

【0006】本発明における原料として用いられるメル
カプタン又はジスルフィドは、具体的には、エチルメル
カプタン、プロピルメルカプタンおよびブチルメルカプ
タンであり、ジメチルジスルフィド、ジエチルジスルフ
ィドである。これらのメルカプタン又はジスルフィド
は、特に限定されず市販品を用いてもよい。
The mercaptan or disulfide used as a raw material in the present invention is specifically ethyl mercaptan, propyl mercaptan and butyl mercaptan, and dimethyl disulfide and diethyl disulfide. These mercaptans or disulfides are not particularly limited, and commercially available products may be used.

【0011】メルカプタン又はジスルフィドを分散又は
溶解させるための水又は水性溶媒は、反応溶媒としても
機能するが、酸性の水性溶媒が好ましい。使用する水性
溶媒量は、循環ラインの液量の10〜20倍量が製造コ
スト面から好ましい。
Water or an aqueous solvent for dispersing or dissolving mercaptan or disulfide also functions as a reaction solvent, but an acidic aqueous solvent is preferable. The amount of the aqueous solvent used is preferably 10 to 20 times the amount of the liquid in the circulation line from the viewpoint of manufacturing cost.

【0012】メルカプタン又はジスルフィドの水性溶媒
への分散、溶解温度は0〜25℃の範囲であり、より好
ましくは0〜20℃が範囲の温度条件である。
Dispersion and dissolution temperatures of mercaptan or disulfide in an aqueous solvent are in the range of 0 to 25 ° C, more preferably 0 to 20 ° C.

【0013】塩素ガスの吹込み温度は、水性溶媒温度に
依存するため、0〜20℃の範囲である。
The blowing temperature of chlorine gas is in the range of 0 to 20 ° C. because it depends on the temperature of the aqueous solvent.

【0014】塩素ガスの吹込み量は、メルカプタン1モ
ルに対して3.0〜7.0倍モルの範囲が好ましく、更
に好ましくは、3.1〜3.5倍モルの範囲である。塩
素ガス量が3.0倍モル未満の場合は、収率低下の原因
となる。又、塩素ガス量が7.0倍モル以上の場合は、
過剰塩素の処理負担が大きくなる。
The amount of chlorine gas blown in is preferably in the range of 3.0 to 7.0 times mol, and more preferably in the range of 3.1 to 3.5 times mol, per mol of mercaptan. When the amount of chlorine gas is less than 3.0 times the molar amount, it causes a decrease in yield. If the amount of chlorine gas is 7.0 times or more,
The burden of processing excess chlorine increases.

【0015】[0015]

【実施例】以下の実施例により、本発明の方法を説明す
る。しかし、これは本発明を限定するものでない。
The following examples illustrate the method of the present invention. However, this is not a limitation of the present invention.

【0016】実施例1 ジャケット付きの分離缶に35%塩酸を6.0kg仕込
みポンプを使用して仕込んだ液をエジェクターを介して
循環させた。この循環液の中にジメチルジスルフィドを
0.4g/minの給液速度で分散、溶解させながら、
エジェクター吸引部より塩素ガスをジメチルジスルフィ
ド1モルに対して6.0倍モル吹き込み5時間連続運転
して得られたメタンスルホニルクロリドの収率、純度及
び主鎖クロロ化物の副生の有無については、表1に示し
た。
Example 1 A liquid having a jacketed separation can containing 6.0% of 35% hydrochloric acid using a charging pump was circulated through an ejector. While dispersing and dissolving dimethyldisulfide in this circulating liquid at a supply rate of 0.4 g / min,
Regarding the yield and purity of methanesulfonyl chloride obtained by continuously operating 6.0 times mole of chlorine gas per mole of dimethyl disulfide for 5 hours from the ejector suction part, and the presence or absence of by-product of main chain chlorinated product, The results are shown in Table 1.

【0017】実施例2 実施例1の製造工程に措いて、循環液の中にエチルメル
カプタンを0.5g/minの給液速度で分散、溶解さ
せながら、エジェクター吸引部より塩素ガスをエチルメ
ルカプタン1モルに対して4.0倍モル吹き込んで得ら
れたエタンスルホニルクロリドの収率、純度及び主鎖ク
ロロ化物の副生の有無については、表1に示した。
Example 2 In the production process of Example 1, while dispersing and dissolving ethyl mercaptan in the circulating liquid at a feed rate of 0.5 g / min, chlorine gas was introduced from the ejector suction part into ethyl mercaptan 1. Table 1 shows the yield and purity of ethanesulfonyl chloride obtained by bubbling 4.0 times the moles, and the presence or absence of a by-product of the main chain chlorinated product.

【0018】実施例3 実施例1の製造工程に措いて、循環液の中にエチルメル
カプタンを0.5g/minの給液速度で分散、溶解さ
せながら、エジェクター吸引部より塩素ガスをエチルメ
ルカプタン1モルに対して7.0倍モル吹き込んで得ら
れたエタンスルホニルクロリドの収率、純度及び主鎖ク
ロロ化物の副生の有無については、表1に示した。
Example 3 In the production process of Example 1, while circulating and dissolving ethyl mercaptan in the circulating liquid at a liquid feeding rate of 0.5 g / min, chlorine gas was introduced from the ejector suction part into ethyl mercaptan 1. Table 1 shows the yield, the purity, and the presence or absence of by-products of the main chain chlorinated product of ethanesulfonyl chloride obtained by blowing in 7.0 times the mol of the mol.

【0019】実施例4 実施例1の製造工程に措いて、循環液の中にプロピルメ
ルカプタンを0.5g/minの給液速度で分散、溶解
させながら、エジェクター吸引部より塩素ガスをプロピ
ルメルカプタン1モルに対して4.0倍モル吹き込んで
得られたプロパンスルホニルクロリドの収率、純度及び
主鎖クロロ化物の副生の有無については、表1に示し
た。
Example 4 In the production process of Example 1, while propyl mercaptan was dispersed and dissolved in the circulating liquid at a feed rate of 0.5 g / min, chlorine gas was introduced from the ejector suction part to propyl mercaptan 1. The yield, the purity, and the presence or absence of a by-product of the main chain chlorinated product of propanesulfonyl chloride obtained by blowing in 4.0 times the mol of the mol are shown in Table 1.

【0020】 [0020]

【0021】表1に示した結果から、次のことが分か
る。即ち、本発明に係る実施例1〜4の製造方法によれ
ば、塩素ガスの吹き込み量が、メルカプタン1モルに対
して3.0〜7.0の範囲である場合でも、アルカンス
ルホニルクロリドを高収率、高純度で連続的に得ること
ができ、しかも、主鎖クロロ化物の副生が生じないこと
である。又、比較例1〜6の製造方法によれば、いずれ
の場合でも、主鎖クロロ化物の副生が認められることと
共に、アルカンスルホニルクロリドの収率、純度が低い
ことがわかる。従って実施例1〜4の製造方法の優位性
が比較例1〜6の製造方法と対比することで確認でき
る。
From the results shown in Table 1, the following can be understood. That is, according to the production methods of Examples 1 to 4 of the present invention, even when the amount of chlorine gas blown is in the range of 3.0 to 7.0 with respect to 1 mol of mercaptan, the amount of alkanesulfonyl chloride is increased. That is, it can be continuously obtained with high yield and high purity, and further, by-products of the main chain chlorinated product are not generated. In addition, according to the production methods of Comparative Examples 1 to 6, it was found that in all cases, by-products of the main chain chlorinated product were observed, and the yield and purity of alkanesulfonyl chloride were low. Therefore, the superiority of the manufacturing methods of Examples 1 to 4 can be confirmed by comparing with the manufacturing methods of Comparative Examples 1 to 6.

【0022】[0022]

【発明の効果】本発明によって、上述したように本発明
には次のような効果が発揮される。即ち、本発明のアル
カンスルホニルクロリドの製造方法によれば、アルカン
スルホニルクロリドを、主鎖クロロ化物を副生すること
なく、高収率かつ高純度で工業的しかも連続的に製造す
ることができる。
As described above, the present invention has the following effects. That is, according to the method for producing an alkanesulfonyl chloride of the present invention, an alkanesulfonyl chloride can be industrially and continuously produced in a high yield and a high purity without producing a main chain chlorinated product as a by-product.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係わるエジェクター付きループ型反応
器の略図。
FIG. 1 is a schematic view of a loop reactor with an ejector according to the present invention.

フロントページの続き Fターム(参考) 4H006 AA02 AC61 BB31 BC31 BD81 BD84 BE53 Continued front page    F-term (reference) 4H006 AA02 AC61 BB31 BC31 BD81                       BD84 BE53

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】メルカプタン又はジスルフィドと塩素とを
反応させてアルカンスルホニルクロリドを製造する方法
において、エジェクター付きループ型反応器を用い、該
反応器に水性溶媒を供給し循環させながら、エジェクタ
ーに入る手前で水性溶媒中にメルカプタン又はジスルフ
ィドを供給し、分散又は溶解させ、エジェクターの吸引
部より塩素ガスを吹き込んで反応を行い、主鎖クロロ化
物が副生することがなくアルカンスルホニルクロリドを
連続的に生成させることを特徴とするアルカンスルホニ
ルクロリドの製造方法。
1. A method for producing an alkanesulfonyl chloride by reacting mercaptan or disulfide with chlorine, wherein a loop type reactor with an ejector is used, and an aqueous solvent is supplied to the reactor before circulation to the ejector. By supplying mercaptan or disulfide into an aqueous solvent, dispersing or dissolving it, and blowing chlorine gas from the suction part of the ejector to carry out the reaction, the alkanesulfonyl chloride is continuously produced without the main chain chlorinated product being by-produced. A method for producing an alkanesulfonyl chloride, which comprises:
【請求項2】塩素ガスの吹込み量が、メルカプタン1モ
ルに対して3.0〜7.0倍モルである請求項1に記載
されたアルカンスルホニルクロリドの製造方法。
2. The method for producing an alkanesulfonyl chloride according to claim 1, wherein the amount of chlorine gas blown in is 3.0 to 7.0 times mol per 1 mol of mercaptan.
【請求項3】メルカプタン又はジスルフィドは、炭素数
2〜4の化合物である請求項1及び請求項2に記載され
たアルカンスルホニルクロリドの製造方法。
3. The method for producing an alkanesulfonyl chloride according to claim 1 or 2, wherein the mercaptan or disulfide is a compound having 2 to 4 carbon atoms.
JP2002193985A 2002-05-28 2002-05-28 Method for producing alkanesulfonyl chloride Pending JP2003342252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002193985A JP2003342252A (en) 2002-05-28 2002-05-28 Method for producing alkanesulfonyl chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002193985A JP2003342252A (en) 2002-05-28 2002-05-28 Method for producing alkanesulfonyl chloride

Publications (1)

Publication Number Publication Date
JP2003342252A true JP2003342252A (en) 2003-12-03

Family

ID=29774485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002193985A Pending JP2003342252A (en) 2002-05-28 2002-05-28 Method for producing alkanesulfonyl chloride

Country Status (1)

Country Link
JP (1) JP2003342252A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008127354A (en) * 2006-11-22 2008-06-05 Nippon Soda Co Ltd Manufacturing method of trichloromethanesulfonyl chloride
CN103787930A (en) * 2014-01-17 2014-05-14 河北亚诺化工有限公司 Method for preparing methylsufonyl chloride by using continuous process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008127354A (en) * 2006-11-22 2008-06-05 Nippon Soda Co Ltd Manufacturing method of trichloromethanesulfonyl chloride
CN103787930A (en) * 2014-01-17 2014-05-14 河北亚诺化工有限公司 Method for preparing methylsufonyl chloride by using continuous process

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