에틸4-브로모아세토아세테이트

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 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.

  P271：옥외 또는 환기가 잘 되는 곳에서만 취급하시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

에틸4-브로모아세토아세테이트 화학적 특성, 용도, 생산

• Synthesis

  To a solution of Ethyl acetoacetate (10.0 g, 76.9 mmol, 1 .0 eq) in acetic acid (30 mL) was added bromine (12.3 g, 76.9 mmol, 1 .0 eq) at 0 °C over 10 min. The mixture was stirred at 0 °C for 1 h, the solvent was removed under reduced pressure, and the residue was diluted with water (50 mL). The aqueous mixture was extracted with CH2CI2 (50 mL x 3). The combined organic layers were washed with brine (60 mL x 2), dried over MgS04 and concentrated under reduced pressure to give ethyl 4-bromo-3-oxobutanoate (14.3 g, 85 per cent) as a yellow oil.

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