1-피페리딘카르복실산,4-(4-요오도-1H-피라졸-1-일)-,1,1-디메틸에틸에스테르

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.

1-피페리딘카르복실산,4-(4-요오도-1H-피라졸-1-일)-,1,1-디메틸에틸에스테르 화학적 특성, 용도, 생산

• Synthesis

  1-(4-BOC-piperidyl)-4-iodopyrazole is prepared by the reaction of 4-Iodopyrazole and 1-Boc-4-methanesulfonyloxypiperidine. The specific synthesis steps are as follows:
  To a stirred solution of 4-iodo-lH-pyrazole (8.98 g, 46.28 mmol) in DCM (160 mL) was added NaH (1.67 g, 55.53 mmol, 80percent NaH/mineral oil) portion-wise at 0 °C. The mixture was stirred at 0 °C for 1 hour, then tert-butyl 4-((methylsulfonyl)oxy)piperidine-l- carboxylate (14.22 g, 50.90 mmol) was added. The resulted mixture was stirred at 100 °C for 15 hours, then cooled to rt, quenched with H20 (30 mL) and concentrated in vacuo. The residue was diluted with H20 (150 mL), and the mixture was extracted with EtOAc (100 mL x 5). The combined organic layers were dried over anhydrous Na2S04 and concentrated in vacuo. The residue was purified by a silica gel column chromatography (PE/EtOAc (v/v) = 5/1) to give 1-(4-BOC-piperidyl)-4-iodopyrazole as a white solid (12.25 g, 70.2percent>). MS (ESI, pos. ion) m/z: 322.0 (M-56+1).
  

1-피페리딘카르복실산,4-(4-요오도-1H-피라졸-1-일)-,1,1-디메틸에틸에스테르 공급 업체

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