2',5'-디하이드록시프로피오페논

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H315：피부에 자극을 일으킴

  H319：눈에 심한 자극을 일으킴

  H335：호흡 자극성을 일으킬 수 있음

• 예방조치문구

  P261：분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.

  P304+P340：흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.

  P305+P351+P338：눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.

  P405：밀봉하여 저장하시오.

2',5'-디하이드록시프로피오페논 화학적 특성, 용도, 생산

• 화학적 성질

  yellowish crystalline powder

• 제조 방법

  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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