3',4'-디하이드록시프로피오페논

그림문자(GHS)

• 그림문자(GHS)

  

• 유해·위험 문구

  H302：삼키면 유해함

  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.

3',4'-디하이드록시프로피오페논 화학적 특성, 용도, 생산

• 용도

  It is an important raw material and intermediate used in organic Synthesis, pharmaceuticals, agrochemicals and dyestuff.

• 제조 방법

  Obtained by Fries rearrangement of pyrocatechol dipropio-nate with aluminium chloride in chlorobenzene at 80° for 2 h (84%) or in nitrobenzene at 100° for 15 min;
  Obtained by Fries rearrangement of pyrocatechol dipropionate with aluminium chloride in the presence of pyrocatechol, in nitrobenzene at 80° for 1 h (37%) or in nitromethane at r.t. for 72 h (76%)
  Also obtained by Fries rearrangement of o-methoxyphenyl propionate (1 mol) by aluminium chloride (2 mol) without solvent at 140° for 2 h (51–55%) or in nitrobenzene at 80° for 30–60 min. A demethylation occurs during the reaction.
  Also obtained by acylation of pyrocatechol with propionic acid
  in the presence of boron trifluoride, at 150° for 2 h in a sealed tube ? (36%)
  in the presence of polyphosphoric acid for 15 min in a boiling water bath ? (12%)
  Preparation by demethylation of 4-hydroxy-3-methoxypropiophenone with refluxing pyridinium chloride for 10 min (80%)
  Also obtained when propiovanillone was heated with an alkali sulfide under conditions used in the kraft cooking process.

3',4'-디하이드록시프로피오페논 준비 용품 및 원자재

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