1H-1,2,4-Triazole-1-carboximidamide hydrochloride

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H302：삼키면 유해함

  H317：알레르기성 피부 반응을 일으킬 수 있음

  H319：눈에 심한 자극을 일으킴

  H412：장기적 영향에 의해 수생생물에 유해함

• 예방조치문구

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

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

  P337+P313：눈에 대한 자극이 지속되면 의학적인 조치· 조언를 구하시오.

1H-1,2,4-Triazole-1-carboximidamide hydrochloride 화학적 특성, 용도, 생산

• 화학적 성질

  White crystalline

• 용도

  [1,2,4]Triazole-1-carboxamidine is an intermediate used in the synthesis of peramivir (P285500), a neuraminidase inhibitor developed as an antiviral agent for the treatment of influenza.

• Synthesis

  1H-1,2,4-Triazole-1-carboxamidine hydrochloride is prepared by the reaction of dicyandiamide and 1,2,4-Triazole. The steps are as follows:
  Dissolve the compound (19.7 g, 0.29 mol) in 20 ml of tetrahydrofuran, and the temperature was raised to 70℃. A solution of dicyandiamide (20 g, 0.24 mol) was added and a solution of 4 mol / L HCl in tetrahydrofuran 27 g, 0.26 mol) at 70℃ for 2 h, the temperature was removed and cooled to room temperature. The solid was removed by filtration and 26.0 g was removed by filtration. The solvent was dried in vacuo at 45℃ to give a colorless oil which was recrystallized from methanol: dichloromethane = 2: 1 Of the mixed solution 50ml recrystallization, cooling crystallization, suction filter to get 6.2g solid, drying a total of 30.1g white powder. Yield 90.3%, purity 99,8%.
  

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