JP5196679B2 - 高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物およびその精製方法 - Google Patents
高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物およびその精製方法 Download PDFInfo
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Description
再結晶精製の原料となる粗ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物は特許文献3に記載の方法で得られるが、必ずしもこれに限定されるものではない。
以下に本発明の実施例を示すが、本発明はこれらに限定されるものではない。例中、収率、純度および不純物含有量は重量基準である。純度および不純物含有量は、ガスクロマトグラフを用いて以下の条件にて測定した。
装置 : 島津製作所製 GC−14A
カラム: 化学物質評価研究機構製 G−250 1.2mmφ×40m
条件 : 窒素流量 70mL/分、検出器 FID
空気・水素圧 各0.05MPa
注入口温度 250℃、カラム温度 160℃(一定)
100mLガラスフラスコに純度96.57wt%ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物10.0g(0.061mol)(エポキシ体;0.004wt%以下)、トルエン 12.0g(1.2重量倍)を仕込み、 不活性ガスによる置換をせずにオイルバスにて内温100℃まで昇温した。その後、内温95−105℃で5.0hr保温した。加熱を止めて放冷し、その後濾過・洗浄した後、減圧乾燥し、純度99.25wt%ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物8.8g(0.054mol)を得た。収率:88%、エポキシ体0.669wt%
Claims (4)
- 無水ハイミック酸を熱異性化し、得られたビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物を精製する方法において、有機溶媒の存在下、再結晶精製を不活性ガス雰囲気下で行うことを特徴とする高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物の精製方法。
- 不活性ガスが窒素であることを特徴とする請求項1記載の高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物の精製方法。
- 酸化防止剤の存在下に再結晶精製を行うことを特徴とする請求項1または2記載の高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物の精製方法。
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JP2010050138A JP5196679B2 (ja) | 2010-03-08 | 2010-03-08 | 高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物およびその精製方法 |
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JP2010050138A JP5196679B2 (ja) | 2010-03-08 | 2010-03-08 | 高純度ビシクロ[2.2.1]ヘプタ−5−エン−2,3−ジ−エキソ−カルボン酸無水物およびその精製方法 |
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JP2011184340A JP2011184340A (ja) | 2011-09-22 |
JP5196679B2 true JP5196679B2 (ja) | 2013-05-15 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CA1054295A (en) * | 1974-05-16 | 1979-05-08 | Norman G. Gaylord | Polymers of cis-5-norbornene-2,3-dicarboxylic anhydride |
JPS5422499A (en) * | 1977-07-22 | 1979-02-20 | Dainippon Ink & Chem Inc | Novel thermosetting composition composed of epoxy resin and polycarboxylic acid anhydride |
JP2009132668A (ja) * | 2007-11-08 | 2009-06-18 | Dainippon Jochugiku Co Ltd | 蚊又はハエ取り線香用効力増強剤及びその製造方法 |
JP2010013360A (ja) * | 2008-07-01 | 2010-01-21 | Dainippon Jochugiku Co Ltd | 蚊又はハエ取り線香用薬剤 |
JP2011020932A (ja) * | 2009-07-14 | 2011-02-03 | Hitachi Chem Co Ltd | ノルボルネン又はノルボルナン構造を有するカルボン酸無水物の分離方法、エポキシ樹脂組成物および光学部材 |
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