JPWO2015199007A1 - 3−(アルキルスルホニル)ピリジン−2−カルボン酸の製造方法 - Google Patents
3−(アルキルスルホニル)ピリジン−2−カルボン酸の製造方法 Download PDFInfo
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- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
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- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
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- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/79—Acids; Esters
- C07D213/803—Processes of preparation
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- C—CHEMISTRY; METALLURGY
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- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/81—Amides; Imides
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- C07—ORGANIC CHEMISTRY
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- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/83—Thioacids; Thioesters; Thioamides; Thioimides
Abstract
Description
一方、3−(アルキルチオ)ピリジン−2−カルボン酸を製造する方法としては、3−ハロゲノピリジン−2−カルボン酸とチオール化合物とを反応させて製造する方法が知られている(WO2013/018928)。
本発明によれば、後述の式(7)で表される化合物又はその塩は、式(1−N)
で表される化合物と式(2)
R2SM2 (2)
〔式中、R2はC1〜C8の直鎖アルキル基を表し、M2は水素原子又はアルカリ金属を表す。〕
で表される化合物とを反応させ、式(3−N)
で表される化合物又はその塩を得る工程ENを含む製造方法により、製造することができる。
工程ANは、式(1−N)で表される化合物(以後、化合物(1−N)と記載する)と、式(2)で表される化合物(以後、化合物(2)と記載する)とを反応させ、式(3−N)で表される化合物(以後、化合物(3−N)と記載する)を製造する工程である。
化合物(1−N)において、2つのXは同一の原子を表し、好ましくは塩素原子である。
化合物(1−N)としては、3,6−ジクロロピリジン−2−カルボン酸アミド及び3,6−ジブロモピリジン−2−カルボン酸アミド等が挙げられる。
化合物(1−N)は、対応するカルボン酸ハライドとアンモニアとの反応により製造できる。該カルボン酸ハライドは対応するカルボン酸を酸ハロゲン化物等でハロゲン化することにより得ることができる。
化合物(2)において、R2は、好ましくはC1〜C4の直鎖アルキル基、よりは好ましくはメチル基及びエチル基である。Mは、好ましくは水素原子、ナトリウム及びカリウムである。
化合物(2)としては、メタンチオール、エタンチオール、プロパンチオール、ブタンチオール、オクタンチオール等のアルカンチオール:リチウムメタンチオラート、ナトリウムメタンチオラート、カリウムメタンチオラート、リチウムエタンチオラート、ナトリウムエタンチオラート、カリウムエタンチオラート、リチウムプロパンチオラート、ナトリウムプロパンチオラート、カリウムプロパンチオラート、リチウムブタンチオラート、ナトリウムブタンチオラート、カリウムブタンチオラート等のアルカリ金属アルカンチオラート等が挙げられ、好ましくはメタンチオール、エタンチオール、ナトリウムメタンチオラート、カリウムメタンチオラート、ナトリウムエタンチオラート及びカリウムエタンチオラートである。
工程ANにおいて、化合物(2)としてメタンチオール及びエタンチオール等のアルカンチオールを使用する際には通常塩基を共存させて行われ、塩基としては、水素化リチウム、水素化ナトリウム、水素化カリウム等のアルカリ金属水素化物:水酸化リチウム、水酸化ナトリウム、水酸化カリウム等のアルカリ金属水酸化物:水酸化カルシウム、水酸化バリウム等のアルカリ土類金属水酸化物:リチウムメチラート、ナトリウムメチラート、カリウムメチラート、リチウムエチラート、ナトリウムエチラート、カリウムエチラート、リチウムtert−ブチラート、ナトリウムtert−ブチラート、カリウムtert−ブチラート等のアルカリ金属アルコラート等が挙げられる。好ましくは水素化ナトリウム、水素化カリウム、水酸化ナトリウム、水酸化カリウム、ナトリウムメチラート、カリウムメチラート、ナトリウムエチラート、カリウムエチラート、ナトリウムtert−ブチラート及びカリウムtert−ブチラートである。
反応は通常溶媒中で行われ、溶媒としては例えばトルエン、キシレン、エチルベンゼン等の芳香族炭化水素溶媒、モノクロロベンゼン、o−ジクロロベンゼン等のハロゲン化芳香族炭化水素溶媒、テトラヒドロフラン、メチルtert−ブチルエーテル等のエーテル溶媒、アセトニトリル、プロピオニトリル等のニトリル溶媒、酢酸エチル、酢酸プロピル等のエステル溶媒、ジクロロメタン、1,2−ジクロロエタン等のハロゲン化炭化水素溶媒、N,N−ジメチルホルムアミド、N,N−ジメチルアセトアミド、N−メチルピロリドン等のアミド溶媒、水及びこれらの混合溶媒が挙げられる。
化合物(2)の使用量は、化合物(1−N)に対して通常0.8〜3.0モル倍、好ましくは1.0〜1.5モル倍である。
塩基の使用量は、化合物(2)に対して通常0.8〜3.0モル倍、好ましくは0.9〜1.2モル倍である。
反応温度は通常−10〜100℃、好ましくは0〜60℃である。反応時間は反応温度により異なるが、通常1〜50時間である。
反応終了後、反応混合物に水を加え、有機溶媒で抽出し、得られた有機層を濃縮することにより、化合物(3−N)を単離することができる。得られた化合物(3−N)は、カラムクロマトグラフィー、再結晶により更に精製することもできる。
工程CNは、通常化合物(3−N)、過酸化水素、酸及びタングステン触媒を混合することにより行われ、混合に際して、化合物(3−N)、タングステン触媒、酸及び水の混合物に過酸化水素を加える方法が一般的である。
反応温度は通常10〜100℃、好ましくは40〜90℃である。反応時間は反応温度により異なるが、通常1〜50時間である。
ギ酸アンモニウムを使用する場合、その量は化合物(6−N)に対して通常0.8〜5モル倍、好ましくは1.0〜3.0モル倍である。
還元反応は、通常溶媒中で行われ、溶媒としては例えば水:メタノール、エタノール、2−プロパノール等のアルコール溶媒:トルエン、キシレン、エチルベンゼン等の芳香族炭化水素溶媒:テトラヒドロフラン、メチルtert−ブチルエーテル等のエーテル溶媒:酢酸エチル、酢酸プロピル等のエステル溶媒:アセトン、メチルイソブチルケトン等のケトン溶媒:N,N−ジメチルホルムアミド、N,N−ジメチルアセトアミド、N−メチルピロリドン等のアミド溶媒等及びその混合溶媒が挙げられる。
工程DNは、通常化合物(6−N)、塩基、不均一遷移金属触媒及び還元剤を混合することにより行われ、混合に際しては、例えば化合物(6−N)、塩基及び不均一遷移金触媒の混合物に還元剤を加える方法、塩基と不均一遷移金触媒との混合物に化合物(6−N)と還元剤をそれぞれ加える方法が用いられる。
反応温度は通常10〜100℃、好ましくは20〜60℃である。反応時間は反応温度、水素分圧により異なるが、通常1〜50時間である。
工程ENは、通常溶媒中で行われ、溶媒としては水、又は水とメタノール、エタノール、イソプロピルアルコール等のアルコール溶媒との混合溶媒が用いられる。
反応温度は通常10〜150℃、好ましくは50〜90℃である。反応時間は反応温度により異なるが、通常1〜50時間である。
反応終了後は、通常化合物(7)が塩の溶液の状態にあり、化合物(7)をそのまま塩として単離することができる。また、この溶液に塩酸、硫酸等の酸水溶液を加え、析出した固体を濾別することにより、或いは溶液に塩酸、硫酸等の酸水溶液を加え、有機溶媒で抽出し、得られた有機層を濃縮することにより、化合物(7)を単離することができる。化合物(7)及びその塩は、再結晶により更に精製することもできる。化合物(7)の塩の具体例としては、リチウム塩、ナトリウム塩、カリウム塩等のアルカリ金属塩が挙げられる。
1H−NMR(DMSO−d6)δ:7.65−7.67(1H,d)、7.88(1H,br)、8.08−8.12(2H,m)
実施例1
1H−NMR(DMSO−d6)δ:1.22−1.26(3H,t)、2.90−2.95(2H,q)、7.58−7.62(1H,d)、7.69(1H,br)、7.88−7.92(1H,d)、7.96(1H,br)
実施例2
1H−NMR(DMSO−d6)δ:8.34(1H,d),8.26(1H,s),7.98(1H,s),7.89(1H,d),3.63(2H,q),1.16(3H,t).
実施例3
1H−NMR(DMSO−d6)δ:1.12−1.16(3H,t)、3.63−3.69(2H,q)、7.75−7.78(1H,m)、7.84(1H,br)、8.16(1H,br)、8.32−8.35(1H,m)、8.85−8.87(1H,m)
実施例4
1H−NMR(DMSO−d6)δ:1.03−1.07(3H,t)、3.70−3.75(2H,q)、7.38−7.41(1H,m)、8.06−8.09(1H,m)、8.61−8.64(1H,m)
実施例5
1H−NMR(DMSO−d6)δ:1.15−1.19(3H,t)、3.49−3.55(2H,q)、7.79−7.83(1H,m)、8.35−8.38(1H,m)、8.90−8.92(1H,m)
比較例1
1H−NMR(CDCl3)δ:7.80(1H,s),7.61(1H,d),7.34(1H,d),3.00(3H,d),2.89(2H,q),1.40(3H,t)
このように、N−メチルアミド化合物においては、3,6−ジクロロピリジン−2−カルボン酸の3−位の塩素原子の置換反応は収率良く進まなかった。
比較例2
Claims (6)
- 式(1-N)
〔式中、Xはハロゲン原子を表す。〕
で表される化合物と、式(2)
R2SM2 (2)
〔式中、R2はC1〜C8の直鎖アルキル基を表し、M2は水素原子又はアルカリ金属を表す。〕
で表される化合物とを反応させ、式(3−N)
〔式中、R2及びXは前記と同じ意味を表す。〕
で表される化合物を得る工程、
式(3−N)で表される化合物と過酸化水素とを、タングステン触媒及び酸の存在下で反応させ、式(6−N)
〔式中、R2及びXは前記と同じ意味を表す。〕
で表される化合物を得る工程、
式(6−N)で表される化合物を、塩基及び不均一系遷移金属触媒の存在下で還元する、式(8−N)
〔式中、R2は前記と同じ意味を表す。〕
で表される化合物を得る工程、及び
式(8−N)で表される化合物を塩基の存在下で加水分解することにより、式(7)
〔式中、R2は前記と同じ意味を表す。〕
で表される化合物又はその塩を得る工程を含む、
式(7)で表される化合物又はその塩の製造方法。 - 式(1−N)
〔式中、Xはハロゲン原子を表す。〕
で表される化合物と、式(2)
R2SM2 (2)
〔式中、R2はC1〜C8の直鎖アルキル基を表し、M2は水素原子又はアルカリ金属を表す。〕
で表される化合物とを反応させ、式(3−N)
〔式中、R2及びXは前記と同じ意味を表す。〕
で表される化合物を得る工程、
式(3−N)で表される化合物と過酸化水素とを、タングステン触媒及び酸の存在下で反応させ、式(6−N)
〔式中、R2及びXは前記と同じ意味を表す。〕
で表される化合物を得る工程、及び
式(6−N)で表される化合物を、塩基及び不均一系遷移金属触媒の存在下で反応させる、式(8−N)
〔式中、R2は前記と同じ意味を表す。〕
で表される化合物を得る工程を含む、
式(8−N)で表される化合物の製造方法。
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AU2015281846A1 (en) | 2017-02-02 |
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US20170129859A1 (en) | 2017-05-11 |
JP6500898B2 (ja) | 2019-04-17 |
RU2017101814A (ru) | 2018-08-02 |
BR112016029074A2 (pt) | 2017-08-22 |
WO2015199007A1 (ja) | 2015-12-30 |
CN106458907A (zh) | 2017-02-22 |
US9850209B2 (en) | 2017-12-26 |
WO2015199006A1 (ja) | 2015-12-30 |
IL249296B (en) | 2019-11-28 |
AU2015281846B2 (en) | 2019-08-01 |
JP6528772B2 (ja) | 2019-06-12 |
CN106660958A (zh) | 2017-05-10 |
EP3162795A4 (en) | 2018-02-28 |
KR20170023963A (ko) | 2017-03-06 |
TW201605803A (zh) | 2016-02-16 |
DE112015003036T5 (de) | 2017-03-16 |
EP3162795B1 (en) | 2019-07-31 |
IL249296A0 (en) | 2017-02-28 |
JPWO2015199006A1 (ja) | 2017-04-20 |
US9815786B2 (en) | 2017-11-14 |
EP3162795A1 (en) | 2017-05-03 |
US20170166529A1 (en) | 2017-06-15 |
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KR102332262B1 (ko) | 2021-11-26 |
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