PRODUCTION METHOD OF 4,4'-DIIODO-3,3'-DIMETHYLBIPHENYL
PROBLEM TO BE SOLVED: To provide a production method of 4,4'-diiodo-3,3'-dimethylbiphenyl, which is industrially excellent with high production efficiency and without using highly-toxic raw material.SOLUTION: Provided ia a production method of 4,4'-diiodo-3,3'-dimethylbiphenyl by...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a production method of 4,4'-diiodo-3,3'-dimethylbiphenyl, which is industrially excellent with high production efficiency and without using highly-toxic raw material.SOLUTION: Provided ia a production method of 4,4'-diiodo-3,3'-dimethylbiphenyl by reacting 3,3'-dimethylbiphenyl with an iodinated agent, comprising the steps of: subjecting 4,4'-diiodo-3,3'-dimethylbiphenyl to reactive crystallization in a reaction liquid; and subjecting deposited 4,4'-diiodo-3,3'-dimethylbiphenyl to solid-liquid separation.SELECTED DRAWING: None
【課題】 毒性が高い原料を使用せず、かつ生産効率が高い工業的に優れた４，４′−ジヨード−３，３′−ジメチルビフェニルの製造方法を提供する。【解決手段】 ３，３′−ジメチルビフェニルをヨウ素化剤と反応させる４，４′−ジヨード−３，３′−ジメチルビフェニルの製造方法であって、４，４′−ジヨード−３，３′−ジメチルビフェニルを反応液中に反応晶析する工程、および析出した４，４′−ジヨード−３，３′−ジメチルビフェニルを固液分離する工程を含むことを特徴とする。【選択図】 なし |
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