1-(2,5-ジヒドロキシフェニル)-1-プロパノン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H315：皮膚刺激

  H319：強い眼刺激

  H335：呼吸器への刺激のおそれ

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  P304+P340：吸入した場合：空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

  P405：施錠して保管すること。

1-(2,5-ジヒドロキシフェニル)-1-プロパノン 価格

1-(2,5-ジヒドロキシフェニル)-1-プロパノン 化学特性,用途語,生産方法

• 化学的特性

  yellowish crystalline powder

• 製造方法

  Preparation by Fries rearrangement of quinol dipropionate (hydroquinone dipropionate),
  with aluminium chloride without solvent at 130–140° for 4 h (75%), ? at 142° for 30 min (80%), at 160–165° for 3 h (good yields) or at 190–200° for 90 min (60%)
  by using various quantities of aluminium chloride at 180° for 2 h (to see ? below)
  with aluminium chloride (2 equiv) in nitromethane at 20° for a week (7%) ? or in nitrobenzene (24%)
  with boron trifluoride complex (BF? 3-OBu2) at reflux for 1 h (42%)
  by using titanium tetrachloride (2 equiv) at 130° for 2 h gave only 6% yield
  Also obtained by treatment of
  hydroquinone dipropionate with aluminium chloride in the presence of hyd-? roquinone (61%)
  2-hydroxy-5-(propionyloxy)propiophenone with aluminium chloride (5 equiv) ? at 180° for 30 min in the presence of hydroquinone (57%)
  Also obtained by acylation of hydroquinone with propionic acid
  in the presence of boron trifluoride in ethylene dichloride at 50–55° (59%) ?, in tetrachloroethane at 90–95° for 5 h (70%) or at 50° for 4 h (70%) or without solvent (67%) at 80° for 2 h (54%) or at 125° for 2 h (71%)
  in the presence of zinc chloride at 190° few min (Nencki reaction)
  in the presence of 70% perchloric acid at reflux for 1 h (12%)
  Also obtained by Friedel–Crafts acylation of hydroquinone with propionyl chlo-ride in nitrobenzene in the presence of aluminium chloride (40%)
  Also obtained from 2-hydroxy-5-(propionyloxy)propiophenone; the ester group elimination on hydrolysis with 85% sulfuric acid at r.t. or by treatment with by aluminium chloride
  Also obtained by reaction of benzoquinone (2.5 equiv) with 2-oxobutanoic acid in aqueous acetonitrile or an acetonitrile/methylene chloride mixture (91%).

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