JP5900182B2 - α,α−ジフルオロ芳香族化合物の製造方法 - Google Patents
α,α−ジフルオロ芳香族化合物の製造方法 Download PDFInfo
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- JP5900182B2 JP5900182B2 JP2012140032A JP2012140032A JP5900182B2 JP 5900182 B2 JP5900182 B2 JP 5900182B2 JP 2012140032 A JP2012140032 A JP 2012140032A JP 2012140032 A JP2012140032 A JP 2012140032A JP 5900182 B2 JP5900182 B2 JP 5900182B2
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- 150000001875 compounds Chemical class 0.000 title claims description 58
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- 125000003118 aryl group Chemical group 0.000 claims description 45
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 43
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 43
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical class C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 39
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- 238000000034 method Methods 0.000 claims description 31
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 15
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
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- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
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- 150000001408 amides Chemical class 0.000 description 1
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- NBTDHPWTBVPOSY-UHFFFAOYSA-I antimony(5+);dichloride;trifluoride Chemical compound F[Sb](F)(F)(Cl)Cl NBTDHPWTBVPOSY-UHFFFAOYSA-I 0.000 description 1
- VMPVEPPRYRXYNP-UHFFFAOYSA-I antimony(5+);pentachloride Chemical compound Cl[Sb](Cl)(Cl)(Cl)Cl VMPVEPPRYRXYNP-UHFFFAOYSA-I 0.000 description 1
- 125000006615 aromatic heterocyclic group Chemical group 0.000 description 1
- HPMLGNIUXVXALD-UHFFFAOYSA-N benzoyl fluoride Chemical compound FC(=O)C1=CC=CC=C1 HPMLGNIUXVXALD-UHFFFAOYSA-N 0.000 description 1
- DAMJCWMGELCIMI-UHFFFAOYSA-N benzyl n-(2-oxopyrrolidin-3-yl)carbamate Chemical compound C=1C=CC=CC=1COC(=O)NC1CCNC1=O DAMJCWMGELCIMI-UHFFFAOYSA-N 0.000 description 1
- 125000006015 bromomethoxy group Chemical group 0.000 description 1
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- 235000019253 formic acid Nutrition 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- MBAKFIZHTUAVJN-UHFFFAOYSA-I hexafluoroantimony(1-);hydron Chemical compound F.F[Sb](F)(F)(F)F MBAKFIZHTUAVJN-UHFFFAOYSA-I 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
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- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 1
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- PNGLEYLFMHGIQO-UHFFFAOYSA-M sodium;3-(n-ethyl-3-methoxyanilino)-2-hydroxypropane-1-sulfonate;dihydrate Chemical compound O.O.[Na+].[O-]S(=O)(=O)CC(O)CN(CC)C1=CC=CC(OC)=C1 PNGLEYLFMHGIQO-UHFFFAOYSA-M 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
で示される1−クロロ−1−芳香環置換エテン類を、芳香族系またはハロゲン系の反応溶媒を用いてフッ化水素と反応させる工程を含む、一般式[2]:
で示されるα,α−ジフルオロ芳香族化合物の製造方法。
で示されるα,α−ジフルオロ芳香族化合物である、発明1に記載の方法。
1−クロロ−1−芳香環置換エテン類を芳香族系またはハロゲン系の反応溶媒で希釈し、フッ化水素を気体の状態でこの溶液に吹き込むことを特徴とする、発明1または発明2に記載の方法。
フッ化水素の使用量が1−クロロ−1−芳香環置換エテン類1molに対して2.0〜10molであることを特徴とする、発明1乃至発明3の何れかに記載の方法。
反応温度が0〜50℃であることを特徴とする、発明1乃至発明4の何れかに記載の方法。
目的物のα,α−ジフルオロ芳香族化合物に、副生物として含まれる芳香族カルボン酸フルオリドを、芳香族カルボン酸または芳香族カルボン酸アミドに変換して除去する精製工程を引き続いて行うことを特徴とする、発明1乃至発明5の何れかに記載の方法。
で示されるα,α−ジクロロ芳香族化合物が副生物として含まれる場合がある。該副生物からも本発明の目的物であるα,α−ジフルオロ芳香族化合物が比較的収率良く得られることがある。よって、一般式[1]で示される1−クロロ−1−芳香環置換エテン類に、一般式[5]で示されるα,α−ジクロロ芳香族化合物がマイナー成分(1−クロロ−1−芳香環置換エテン類>α,α−ジクロロ芳香族化合物の関係)として含まれる場合も、本発明の請求項に記載した原料基質として扱う。
で示される芳香族カルボン酸フルオリドを副生する場合がある。該芳香族カルボン酸フルオリドと目的物であるα,α−ジフルオロ芳香族化合物の沸点が極めて近く{実施例1のガスクロマトグラフィー分析における保持時間の違いは0.1分[目的物1−ブロモ−4−(1,1−ジフルオロエチル)ベンゼン vs.副生物4−ブロモベンゾイルフルオリド]、実施例3のガスクロマトグラフィー分析における保持時間の違いは0.2分(目的物1,1−ジフルオロエチルベンゼン vs.副生物ベンゾイルフルオリド)}、分別蒸留でも効果的に分離することができない[目的物は熱的な安定性が高い化合物とは言えず(非特許文献3)、高温下で長時間かけて行う分別蒸留がそもそも好適な精製方法ではない]。
以下、実施例により本発明の実施の形態を具体的に説明するが、本発明はこれらの実施例に限定されるものではない。
フッ素樹脂ライニングの耐圧反応容器を氷浴で冷却し、フッ化水素9.14g(457mmol、11.0eq)のエーテル溶液[溶媒使用量23.5mL(0.568L/mol)]を加え、この溶液に0℃で、下記式:
Claims (6)
- 一般式[1]:
[式中、Ar1は芳香環基または置換芳香環基を表し、R1およびR2はそれぞれ独立に水素原子、アルキル基、置換アルキル基、芳香環基または置換芳香環基を表し、Ar1とR1、Ar1とR2、あるいは、R1とR2は共有結合により環式構造を形成することもできる。]
で示される1−クロロ−1−芳香環置換エテン類を、トルエン、クロロベンゼン、α,α,α−トリフルオロトルエン、塩化メチレン、クロロホルム、および1,2−ジクロロエタンからなる群より選ばれる少なくとも1種の反応溶媒を用いてフッ化水素と反応させる工程を含む、一般式[2]:
[式中、Ar1、R1およびR2は一般式[1]と同じである。]
で示されるα,α−ジフルオロ芳香族化合物の製造方法。 - 1−クロロ−1−芳香環置換エテン類を前記反応溶媒で希釈し、フッ化水素を気体の状態でこの溶液に吹き込むことを特徴とする、請求項1または請求項2に記載の方法。
- フッ化水素の使用量が1−クロロ−1−芳香環置換エテン類1molに対して2.0〜10molであることを特徴とする、請求項1乃至請求項3の何れかに記載の方法。
- 反応温度が0〜50℃であることを特徴とする、請求項1乃至請求項4の何れかに記載の方法。
- 目的物のα,α−ジフルオロ芳香族化合物に、副生物として含まれる芳香族カルボン酸フルオリドを、芳香族カルボン酸または芳香族カルボン酸アミドに変換して除去する精製工程を引き続いて行うことを特徴とする、請求項1乃至請求項5の何れかに記載の方法。
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| IT201700116962A1 (it) * | 2017-10-17 | 2019-04-17 | Univ Degli Studi Di Sassari | Processo di alogenazione in posizione alpha-H di alchil-areni variamente sostituiti sull’anello aromatico. |
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| US3200159A (en) * | 1963-01-25 | 1965-08-10 | American Cyanamid Co | Vapor phase hydrofluorination of alpha-chlorostyrene |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| LAPS | Cancellation because of no payment of annual fees |