JP2003128619A - Method for producing 3-methyladipic acid - Google Patents

Method for producing 3-methyladipic acid

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Publication number
JP2003128619A
JP2003128619A JP2001324595A JP2001324595A JP2003128619A JP 2003128619 A JP2003128619 A JP 2003128619A JP 2001324595 A JP2001324595 A JP 2001324595A JP 2001324595 A JP2001324595 A JP 2001324595A JP 2003128619 A JP2003128619 A JP 2003128619A
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JP
Japan
Prior art keywords
hydrogen peroxide
tungsten
molybdenum
metal
pulegone
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.)
Granted
Application number
JP2001324595A
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Japanese (ja)
Other versions
JP4000816B2 (en
Inventor
Koju Hagitani
弘寿 萩谷
Tatsu Minamida
龍 南田
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.)
Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing 3-methyladipic acid by oxidizing pulegone with hydrogen peroxide, which is an inexpensive, easily handled, clean and excellent oxidizer. SOLUTION: The method for producing 3-methyladipic acid is characterized by reacting the pulegone and the hydrogen peroxide in the presence of a metal oxide catalyst obtained by reacting the hydrogen peroxide and at least one kind of metal compound selected from the group consisting of metallic tungsten, metallic molybdenum, a tungsten compound and a molybdenum compound.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、3−メチルアジピ
ン酸の製造方法に関する。 【0002】 【従来の技術】3−メチルアジピン酸は、医薬、農薬、
生理活性物質等の合成原料や液晶ポリマーの原料として
有用である。かかる3−メチルアジピン酸の製造方法と
しては、例えば(1)プレゴンを過マンガン酸カリウム
と反応させる方法(J.Chem.Edu.,70,9
51(1993))、(2)ルテニウム触媒の存在下
に、プレゴンと過ヨウ素酸ナトリウムとを反応させる方
法(J.Org.Chem.,52,689(198
7))、(3)ルテニウム触媒の存在下に、プレゴンと
オキソン(デュポン社の登録商標)とを反応させる方法
(J.Org.Chem.,66,4814(200
1))等が知られている。(1)の方法は、プレゴンに
対して、化学量論量以上の過マンガン酸カリウムを用い
ており、しかも反応後の金属廃棄物を処理しなければな
らないため、経済面および環境面で問題があり、(2)
および(3)の方法は、高価な触媒や酸化剤を用いてお
り、経済的に不利であるという問題があった。 【0003】一方で、過酸化水素は、安価で、取扱いが
容易で、しかも反応後には無害な水になる、クリーンで
優れた酸化剤として近年注目を集めているが、プレゴン
と過酸化水素とを反応させて、3−メチルアジピン酸を
製造する方法については、これまで報告されていなかっ
た。 【0004】 【発明が解決しようとする課題】このような状況のも
と、本発明者らは、プレゴンと過酸化水素とを反応させ
て、3−メチルアジピン酸を製造する方法について鋭意
検討したところ、タングステン金属、モリブデン金属、
タングステン化合物およびモリブデン化合物からなる群
から選ばれる少なくとも一種の金属化合物と過酸化水素
とを反応せしめてなる金属酸化物が、プレゴンと過酸化
水素との反応において、良好な酸化触媒活性を示し、プ
レゴンから3−メチルアジピン酸が得られることを見い
だし、本発明に至った。 【0005】 【課題を解決するための手段】すなわち本発明は、タン
グステン金属、モリブデン金属、タングステン化合物お
よびモリブデン化合物からなる群から選ばれる少なくと
も一種の金属化合物と過酸化水素とを反応せしめてなる
金属酸化物触媒の存在下に、プレゴンと過酸化水素とを
反応させることを特徴とする3−メチルアジピン酸の製
造方法を提供するものである。 【0006】 【発明の実施の形態】本発明においては、プレゴンは、
光学活性体の単独であってもよいし、光学活性体の混合
物であってもよい。 【0007】タングステン化合物としては、例えばホウ
化タングステン等の第IIIb族元素とタングステンとから
なるタングステン化合物、例えば炭化タングステン、ケ
イ化タングステン等の第IVb族元素とタングステンとか
らなるタングステン化合物、例えばチッ化タングステ
ン、リン化タングステン等の第Vb族元素とタングステン
とからなるタングステン化合物、例えば硫化タングステ
ン、酸化タングステン、タングステン酸等の第VIB族元
素とタングステンとからなるタングステン化合物、例え
ばタングステン酸ナトリウム、タングステン酸カリウ
ム、タングステン酸マグネシウム等のタングステン酸塩
等が挙げられる。 【0008】モリブデン化合物としては、例えばホウ化
モリブデン等の第IIIb族元素とモリブデンとからなるモ
リブデン化合物、例えば炭化モリブデン、ケイ化モリブ
デン等の第IVb族元素とモリブデンとからなるモリブデ
ン化合物、例えばチッ化モリブデン、リン化モリブデン
等の第Vb族元素とモリブデンとからなるタングステン化
合物、例えば硫化モリブデン、酸化モリブデン、モリブ
デン酸等の第VIb族元素とモリブデンとからなるモリブ
デン化合物、例えばモリブデン酸ナトリウム、モリブデ
ン酸カリウム等のモリブデン酸塩等が挙げられる。 【0009】これらタングステン金属、モリブデン金
属、タングステン化合物およびモリブデン化合物は、そ
れぞれ単独で用いてもよいし、2種以上を混合して用い
てもよい。 【0010】かかる金属化合物と過酸化水素とを反応せ
しめることにより、プレゴンを酸化して、3−メチルア
ジピン酸を製造するための触媒となる金属酸化物が調製
される。かかる金属化合物と過酸化水素との反応は、通
常水溶媒中で実施される。もちろん例えばジエチルエー
テル、メチルtert−ブチルエーテル、テトラヒドロ
フラン等のエーテル系溶媒、例えば酢酸エチル等のエス
テル系溶媒、例えばtert−ブタノール等の第三級ア
ルコール系溶媒、例えばアセトニトリル、プロピオニト
リル等のニトリル系溶媒等の有機溶媒中または該有機溶
媒と水との混合溶媒中で実施してもよい。 【0011】過酸化水素は、通常水溶液として用いられ
るが、有機溶媒溶液を用いてもよい。取扱いがより容易
であるという点で、過酸化水素水を用いることが好まし
い。過酸化水素水もしくは過酸化水素の有機溶媒溶液中
の過酸化水素濃度は特に制限されないが、容積効率、安
全面等を考慮すると、実用的には1〜60重量%であ
る。過酸化水素水は、通常市販のものをそのままもしく
は必要に応じて、希釈、濃縮等により濃度調整を行なっ
た後用いればよい。また過酸化水素の有機溶媒溶液は、
例えば過酸化水素水を有機溶媒で抽出処理する、もしく
は有機溶媒の存在下に蒸留処理する等の手段により、調
製したものを用いればよい。 【0012】金属酸化物を調製する際の過酸化水素の使
用量は、金属化合物に対して、通常3モル倍以上、好ま
しくは5モル倍以上であり、その上限は特に制限されな
いが、経済的な面を考慮すると、実用的には50モル倍
以下である。 【0013】金属化合物と過酸化水素との反応は、通常
その両者を混合、接触することにより行われ、金属化合
物と過酸化水素の接触効率を向上させるため、金属化合
物が、金属酸化物調製液中で、十分分散するよう攪拌し
ながら実施することが好ましい。また、金属化合物と過
酸化水素との接触効率をより高め、金属酸化物調製時の
制御をより容易にするという点で、例えば粉末状の金属
酸化物等粒径の小さな金属化合物を用いることが好まし
い。金属酸化物の調製温度は、通常−10〜100℃で
ある。 【0014】金属化合物と過酸化水素とを、水中もしく
は有機溶媒中で反応させることにより、該金属化合物の
全部もしくは一部が溶解し、金属酸化物を含む均一溶液
もしくは懸濁液を調製することができる。得られた調製
液を、例えば濃縮処理等して、該金属酸化物を取り出し
て、触媒として用いてもよいし、該調製液をそのまま触
媒として用いてもよい。 【0015】かくして得られた金属酸化物触媒の存在下
に、プレゴンと過酸化水素とを反応させることにより、
3−メチルアジピン酸が得られるが、過酸化水素として
は通常過酸化水素水が用いられる。もちろん過酸化水素
の有機溶媒溶液を用いてもよい。過酸化水素水もしくは
過酸化水素の有機溶媒溶液中の過酸化水素濃度は特に制
限されないが、容積効率、安全面等を考慮すると、実用
的には1〜60重量%である。過酸化水素水は、通常市
販のものをそのままもしくは必要に応じて、希釈、濃縮
等により濃度調整を行なった後用いればよく、また過酸
化水素の有機溶媒溶液は、例えば過酸化水素水を有機溶
媒で抽出処理する、もしくは有機溶媒の存在下に蒸留処
理する等の手段により、調製したものを用いればよい。 【0016】過酸化水素の使用量は、プレゴンに対し
て、通常2モル倍以上であり、その上限は特にないが、
あまり多すぎると経済的に不利になるため、実用的には
10モル倍以下である。 【0017】金属酸化物の使用量は、プレゴンに対し
て、通常0.001〜0.95モル倍である。 【0018】例えば水溶媒中で反応する、過酸化水素水
を用いる等反応系に水が存在する場合は、第四級アンモ
ニウム塩を反応系に共存させてもよく、第四級アンモニ
ウム塩としては、例えば硫酸水素テトラ(n−ブチル)
アンモニウム、硫酸水素テトラ(n−ヘキシル)アンモ
ニウム、硫酸水素メチルトリセチルアンモニウム等の硫
酸水素第四級アンモニウム塩、例えば塩化ベンジルトリ
エチルアンモニウム等の塩化第四級アンモニウム塩等が
挙げられる。かかる第四級アンモニウム塩を使用する場
合の使用量は、プレゴンに対して、通常0.001〜1
モル倍である。また、かかる第四級アンモニウム塩は、
触媒である金属酸化物調製時に予め加えておいてもよ
い。 【0019】触媒として、タングステン酸塩と過酸化水
素とを反応せしめてなるタングステン酸化物および/ま
たはモリブデン酸塩と過酸化水素とを反応せしめてなる
モリブデン酸化物を用いる場合は、例えば塩酸、硫酸、
リン酸、ホウ酸等の酸を反応系に加え、反応を実施する
ことが好ましい。酸を反応系に加える場合のその使用量
は、前記タングステン酸化物および/またはモリブデン
酸化物に対して、通常1モル倍以上である。かかる酸
は、触媒である金属酸化物を調製する際に、予め加えて
おいてもよい。 【0020】また、反応を水と有機溶媒との二層系で実
施する場合は、反応系に脱水剤を共存させてもよく、脱
水剤としては、例えば無水硫酸マグネシウム、無水硫酸
ナトリウム等が挙げられる。脱水剤を使用する場合の使
用量は特に制限されないが、通常反応系内に存在する水
分を除去するに十分な量の脱水剤が用いられる。 【0021】プレゴンと過酸化水素との反応は、無溶媒
で行ってもよいし、水中もしくは有機溶媒中で行っても
よい。有機溶媒としては、例えば四塩化炭素、クロロホ
ルム、ジクロロエタン、クロロベンゼン、ジクロロベン
ゼン等のハロゲン化炭化水素系溶媒、例えばトルエン、
キシレン、ニトロベンゼン等の芳香族炭化水素系溶媒、
例えばジエチルエーテル、メチルtert−ブチルエー
テル、テトラヒドロフラン等エーテル系溶媒、例えば酢
酸エチル等のエステル系溶媒、例えばメタノール、エタ
ノール、tert−ブタノール等のアルコール系溶媒、
例えばアセトニトリル、プロピオニトリル等のニトリル
系溶媒等が挙げられる。 【0022】水または有機溶媒の使用量は特に制限され
ないが、容積効率等を考慮すると、実用的には、プレゴ
ンに対して、100重量倍以下である。 【0023】本反応は、通常金属酸化物触媒、プレゴン
および過酸化水素を混合、接触させることにより実施さ
れるが、例えば金属化合物、過酸化水素およびプレゴン
を混合、接触させて、金属酸化物触媒の調製操作と、プ
レゴンと過酸化水素との反応を、同時に行ってもよい。 【0024】反応温度は、通常50〜130℃である。
また、本反応は通常常圧条件下で実施されるが、減圧も
しくは加圧条件下で実施してもよい。 【0025】反応の進行と共に、3−メチルアジピン酸
が生成するが、かかる反応の進行は、例えばガスクロマ
トグラフィ、高速液体クロマトグラフィ、薄層クロマト
グラフィ、NMR、IR等の通常の分析手段により確認
することができる。 【0026】反応終了後、反応液をそのままもしくは必
要に応じて残存する過酸化水素を、例えば亜硫酸ナトリ
ウム等の還元剤で分解した後、濃縮処理、晶析処理等す
ることにより、3−メチルアジピン酸を取り出すことが
できる。また、反応液に、必要に応じて水および/また
は水に不溶の有機溶媒を加え、抽出処理して、得られる
有機層を濃縮処理することにより、3−メチルアジピン
酸を取り出すこともできる。取り出した3−メチルアジ
ピン酸は、例えば蒸留、再結晶、カラムクロマトグラフ
ィ等通常の精製方法によりさらに精製してもよい。 【0027】3−メチルアジピン酸を晶析処理により取
り出した後の濾液や反応液を抽出処理し、有機層を取り
出した後の水層は、金属酸化物触媒を含んでおり、その
ままもしくは必要に応じて濃縮処理等を行った後、本反
応に再使用することができる。 【0028】また、光学活性なプレゴンを用いた場合に
は、光学活性な3−メチルアジピン酸が得られる。 【0029】 【実施例】以下、実施例により本発明をさらに詳細に説
明するが、本発明はこれら実施例に限定されない。 【0030】実施例1 還流冷却管を付した50mLシュレンク管を窒素置換
し、室温で、タングステン金属23mgおよび30重量
%過酸化水素水2.4gを仕込み、内温60℃で1時間
攪拌し、触媒液を調製した。該触媒液に、プレゴン1.
9gおよび30重量%過酸化水素水4.7gを仕込み、
内温100℃で5時間攪拌、保持した。得られた反応液
を冷却し、エタノール50mLを加え、十分振とうした
後、高速液体クロマトグラフィにより分析した。3−メ
チルアジピン酸の生成量:1.38g、収率69%(プ
レゴン基準)。 【0031】 【発明の効果】本発明によれば、入手が容易なタングス
テン金属、モリブデン金属、タングステン化合物および
モリブデン化合物からなる群から選ばれる少なくとも一
種の金属化合物と過酸化水素とを反応させて得られる金
属酸化物を触媒とすることにより、プレゴンと過酸化水
素との反応から、3−メチルアジピン酸を得ることがで
き、工業的に有利である。
Description: TECHNICAL FIELD [0001] The present invention relates to a method for producing 3-methyladipic acid. [0002] 3-Methyladipic acid is used in medicines, pesticides,
It is useful as a raw material for synthesizing a physiologically active substance or a liquid crystal polymer. As a method for producing such 3-methyladipic acid, for example, (1) a method of reacting pulegone with potassium permanganate (J. Chem. Edu., 70, 9)
51 (1993)), (2) a method of reacting pulegone with sodium periodate in the presence of a ruthenium catalyst (J. Org. Chem., 52, 689 (198)
7)), (3) A method of reacting pulegone with oxone (registered trademark of DuPont) in the presence of a ruthenium catalyst (J. Org. Chem., 66, 4814 (200)
1)) and the like are known. The method (1) uses a stoichiometric amount or more of potassium permanganate with respect to pulegone, and furthermore, must treat the metal waste after the reaction, which poses economic and environmental problems. Yes, (2)
The methods (3) and (3) use expensive catalysts and oxidizing agents, and have a problem that they are economically disadvantageous. On the other hand, hydrogen peroxide has recently attracted attention as a clean and excellent oxidizing agent which is inexpensive, easy to handle and becomes harmless water after the reaction. To produce 3-methyladipic acid by the reaction of [0004] Under such circumstances, the present inventors diligently studied a method for producing 3-methyladipic acid by reacting pulegone with hydrogen peroxide. However, tungsten metal, molybdenum metal,
A metal oxide obtained by reacting at least one metal compound selected from the group consisting of a tungsten compound and a molybdenum compound with hydrogen peroxide shows a favorable oxidation catalytic activity in the reaction between pulegone and hydrogen peroxide, It was found that 3-methyladipic acid could be obtained from the present invention, which led to the present invention. That is, the present invention relates to a metal obtained by reacting at least one metal compound selected from the group consisting of tungsten metal, molybdenum metal, a tungsten compound and a molybdenum compound with hydrogen peroxide. An object of the present invention is to provide a method for producing 3-methyladipic acid, which comprises reacting pulegone with hydrogen peroxide in the presence of an oxide catalyst. DETAILED DESCRIPTION OF THE INVENTION In the present invention, plegon is
The optically active substance may be used alone or a mixture of optically active substances. As the tungsten compound, for example, a tungsten compound composed of a group IIIb element such as tungsten boride and tungsten, and a tungsten compound composed of a group IVb element such as tungsten carbide and tungsten silicide and tungsten, for example, nitride Tungsten, a tungsten compound composed of tungsten and a Group Vb element such as tungsten phosphide, for example, a tungsten compound composed of tungsten and a Group VIB element such as tungsten sulfide, tungsten oxide and tungstic acid, for example, sodium tungstate and potassium tungstate And tungstates such as magnesium tungstate. As the molybdenum compound, for example, a molybdenum compound composed of a group IIIb element such as molybdenum boride and molybdenum, for example, a molybdenum compound composed of a group IVb element such as molybdenum carbide and molybdenum silicide and molybdenum, for example, nitride Molybdenum, a tungsten compound composed of molybdenum and a Group Vb element such as molybdenum phosphide, for example, a molybdenum compound composed of molybdenum and a Group VIb element such as molybdenum sulfide, molybdenum oxide and molybdenum acid, for example, sodium molybdate and potassium molybdate And the like. These tungsten metal, molybdenum metal, tungsten compound and molybdenum compound may be used alone or in combination of two or more. By reacting such a metal compound with hydrogen peroxide, pulegone is oxidized to prepare a metal oxide serving as a catalyst for producing 3-methyladipic acid. The reaction between such a metal compound and hydrogen peroxide is usually carried out in an aqueous solvent. Of course, ether solvents such as diethyl ether, methyl tert-butyl ether and tetrahydrofuran, for example, ester solvents such as ethyl acetate, for example, tertiary alcohol solvents such as tert-butanol, for example, nitrile solvents such as acetonitrile and propionitrile And the like, or in a mixed solvent of the organic solvent and water. Although hydrogen peroxide is usually used as an aqueous solution, an organic solvent solution may be used. It is preferable to use aqueous hydrogen peroxide in that handling is easier. The concentration of hydrogen peroxide in the aqueous solution of hydrogen peroxide or in the organic solvent of hydrogen peroxide is not particularly limited, but is practically 1 to 60% by weight in consideration of volumetric efficiency, safety and the like. The aqueous hydrogen peroxide may be used as it is, or may be used as it is or after adjusting the concentration by dilution, concentration, or the like as necessary. The solution of hydrogen peroxide in organic solvent is
For example, those prepared by means of extracting hydrogen peroxide solution with an organic solvent or distilling in the presence of an organic solvent may be used. The amount of hydrogen peroxide used for preparing the metal oxide is usually at least 3 mole times, and preferably at least 5 mole times, relative to the metal compound, and the upper limit is not particularly limited, but economical. In consideration of such aspects, it is practically 50 mole times or less. The reaction between the metal compound and hydrogen peroxide is usually carried out by mixing and contacting the two. In order to improve the efficiency of contact between the metal compound and hydrogen peroxide, the metal compound is mixed with a metal oxide preparation solution. It is preferable to carry out the stirring while stirring so that the dispersion is sufficiently performed. In addition, it is preferable to use a metal compound having a small particle diameter such as a powdery metal oxide, for example, in that the contact efficiency between the metal compound and hydrogen peroxide is further increased and the control during the preparation of the metal oxide is facilitated. preferable. The preparation temperature of the metal oxide is usually from -10 to 100C. By reacting the metal compound with hydrogen peroxide in water or an organic solvent, all or a part of the metal compound is dissolved to prepare a homogeneous solution or suspension containing the metal oxide. Can be. The obtained prepared solution may be subjected to, for example, a concentration treatment, and the metal oxide may be taken out and used as a catalyst, or the prepared solution may be used as it is as a catalyst. By reacting pulegone with hydrogen peroxide in the presence of the metal oxide catalyst thus obtained,
Although 3-methyladipic acid is obtained, aqueous hydrogen peroxide is usually used as the hydrogen peroxide. Of course, an organic solvent solution of hydrogen peroxide may be used. The concentration of hydrogen peroxide in the aqueous solution of hydrogen peroxide or in the organic solvent of hydrogen peroxide is not particularly limited, but is practically 1 to 60% by weight in consideration of volumetric efficiency, safety and the like. Hydrogen peroxide solution may be used as it is, or may be used as it is or after adjusting the concentration by dilution, concentration, etc. as needed, and an organic solvent solution of hydrogen peroxide is, for example, an organic solvent solution of hydrogen peroxide. What has been prepared by means such as extraction with a solvent or distillation in the presence of an organic solvent may be used. The amount of hydrogen peroxide to be used is usually at least 2 mol times the amount of pulegone, and there is no particular upper limit.
If it is too much, it is economically disadvantageous, so practically it is 10 mole times or less. The amount of the metal oxide to be used is usually 0.001 to 0.95 mole times with respect to pulegone. When water is present in the reaction system, for example, a reaction in an aqueous solvent or using aqueous hydrogen peroxide, a quaternary ammonium salt may be allowed to coexist in the reaction system. For example, tetra (n-butyl) hydrogen sulfate
Examples include quaternary ammonium hydrogensulfates such as ammonium, tetra (n-hexyl) ammonium hydrogensulfate, and methyltricetylammonium hydrogensulfate, and quaternary ammonium chlorides such as benzyltriethylammonium chloride. When such a quaternary ammonium salt is used, the amount of the quaternary ammonium salt is usually 0.001 to 1 with respect to pulegone.
It is molar times. Also, such a quaternary ammonium salt is
It may be added in advance when preparing the metal oxide as a catalyst. When a tungsten oxide obtained by reacting a tungstate with hydrogen peroxide and / or a molybdenum oxide obtained by reacting a molybdate with hydrogen peroxide is used as a catalyst, for example, hydrochloric acid, sulfuric acid, etc. ,
It is preferable to add an acid such as phosphoric acid or boric acid to the reaction system to carry out the reaction. When the acid is added to the reaction system, the amount of the acid used is usually 1 mole or more of the tungsten oxide and / or molybdenum oxide. Such an acid may be added in advance when preparing a metal oxide as a catalyst. When the reaction is carried out in a two-layer system of water and an organic solvent, a dehydrating agent may be present in the reaction system. Examples of the dehydrating agent include anhydrous magnesium sulfate and anhydrous sodium sulfate. Can be When the dehydrating agent is used, the amount of the dehydrating agent is not particularly limited, but a sufficient amount of the dehydrating agent is usually used to remove water present in the reaction system. The reaction between pulegone and hydrogen peroxide may be carried out without solvent, in water or in an organic solvent. As the organic solvent, for example, carbon tetrachloride, chloroform, dichloroethane, chlorobenzene, halogenated hydrocarbon solvents such as dichlorobenzene, for example, toluene,
Aromatic hydrocarbon solvents such as xylene and nitrobenzene,
For example, ether solvents such as diethyl ether, methyl tert-butyl ether, and tetrahydrofuran, for example, ester solvents such as ethyl acetate, for example, methanol, ethanol, and alcohol solvents such as tert-butanol;
Examples thereof include nitrile solvents such as acetonitrile and propionitrile. The amount of water or organic solvent to be used is not particularly limited, but is practically not more than 100 times by weight with respect to pulegone in consideration of volumetric efficiency and the like. This reaction is usually carried out by mixing and contacting a metal oxide catalyst, pulegone and hydrogen peroxide. For example, a metal compound, hydrogen peroxide and pulegone are mixed and contacted to form a metal oxide catalyst. May be performed simultaneously with the reaction between pulegone and hydrogen peroxide. The reaction temperature is usually from 50 to 130 ° C.
The reaction is usually carried out under normal pressure, but may be carried out under reduced pressure or increased pressure. With the progress of the reaction, 3-methyladipic acid is generated. The progress of the reaction can be confirmed by ordinary analytical means such as gas chromatography, high performance liquid chromatography, thin layer chromatography, NMR and IR. it can. After completion of the reaction, the reaction solution is left as it is or, if necessary, the remaining hydrogen peroxide is decomposed with a reducing agent such as sodium sulfite, and then concentrated and crystallized to give 3-methyladipin. Acid can be removed. Further, if necessary, water and / or an organic solvent insoluble in water are added to the reaction solution, and the mixture is extracted, and the obtained organic layer is concentrated to obtain 3-methyladipic acid. The extracted 3-methyladipic acid may be further purified by a conventional purification method such as, for example, distillation, recrystallization, and column chromatography. The filtrate and the reaction solution after the removal of 3-methyladipic acid by the crystallization treatment are subjected to the extraction treatment, and the aqueous layer after the removal of the organic layer contains the metal oxide catalyst. After a concentration treatment or the like is performed accordingly, it can be reused in the present reaction. When optically active pulegone is used, optically active 3-methyladipic acid is obtained. EXAMPLES Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. Example 1 A 50 mL Schlenk tube equipped with a reflux condenser was replaced with nitrogen, and 23 mg of tungsten metal and 2.4 g of 30% by weight hydrogen peroxide solution were charged at room temperature, and stirred at an internal temperature of 60 ° C. for 1 hour. A catalyst solution was prepared. Plegon 1.
9 g and 4.7 g of a 30% by weight aqueous hydrogen peroxide solution were charged,
The mixture was stirred and maintained at an internal temperature of 100 ° C. for 5 hours. The obtained reaction solution was cooled, 50 mL of ethanol was added, and the mixture was shaken sufficiently, and then analyzed by high performance liquid chromatography. Production amount of 3-methyladipic acid: 1.38 g, yield: 69% (based on pulegone). According to the present invention, at least one metal compound selected from the group consisting of tungsten metal, molybdenum metal, a tungsten compound and a molybdenum compound, which is easily available, is reacted with hydrogen peroxide. By using the obtained metal oxide as a catalyst, 3-methyladipic acid can be obtained from the reaction between pulegone and hydrogen peroxide, which is industrially advantageous.

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 4G069 AA02 AA08 BB01C BB02C BB04A BB04B BC59A BC59C BC60A BC60B BC60C BD01C BD02C CB07 FA01 FB41 FC04 4H006 AA02 AC46 BA14 BA30 BA81 BE32 BS10 4H039 CA65 CC30    ────────────────────────────────────────────────── ─── Continuation of front page    F term (reference) 4G069 AA02 AA08 BB01C BB02C                       BB04A BB04B BC59A BC59C                       BC60A BC60B BC60C BD01C                       BD02C CB07 FA01 FB41                       FC04                 4H006 AA02 AC46 BA14 BA30 BA81                       BE32 BS10                 4H039 CA65 CC30

Claims (1)

【特許請求の範囲】 【請求項1】タングステン金属、モリブデン金属、タン
グステン化合物およびモリブデン化合物からなる群から
選ばれる少なくとも一種の金属化合物と過酸化水素とを
反応せしめてなる金属酸化物触媒の存在下に、プレゴン
と過酸化水素とを反応させることを特徴とする3−メチ
ルアジピン酸の製造方法。
Claims: 1. A metal oxide catalyst obtained by reacting hydrogen peroxide with at least one metal compound selected from the group consisting of tungsten metal, molybdenum metal, a tungsten compound and a molybdenum compound. A method for producing 3-methyladipic acid, which comprises reacting pulegone with hydrogen peroxide.
JP2001324595A 2001-10-23 2001-10-23 Method for producing 3-methyladipic acid Expired - Fee Related JP4000816B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114130384A (en) * 2020-09-03 2022-03-04 中国石油化工股份有限公司 Water-soluble catalyst, preparation method and application thereof, and method for processing residual oil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114130384A (en) * 2020-09-03 2022-03-04 中国石油化工股份有限公司 Water-soluble catalyst, preparation method and application thereof, and method for processing residual oil
CN114133954A (en) * 2020-09-03 2022-03-04 中国石油化工股份有限公司 Method and device for preparing low-sulfur petroleum coke by processing slag oil
CN114130384B (en) * 2020-09-03 2023-12-12 中国石油化工股份有限公司 Water-soluble catalyst, preparation method and application thereof, and method for processing residual oil

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