아연보로하이드라이드

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Danger

• 유해·위험 문구

  H301：삼키면 유독함

  H314：피부에 심한 화상과 눈에 손상을 일으킴

• 예방조치문구

  P260：분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

  P270：이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

  P301+P310：삼켰다면 즉시 의료기관(의사)의 진찰을 받으시오.

  P301+P330+P331：삼켰다면 입을 씻어내시오. 토하게 하려 하지 마시오.

  P303+P361+P353：피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.

  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.

  P310：즉시 의료기관(의사)의 진찰을 받으시오. 삼켰다면 즉시 의료기관(의사)의 도움을 받으시오.

  P321：(…) 처치를 하시오.

  P330：입을 씻어내시오.

  P363：다시 사용전 오염된 의류는 세척하시오.

  P405：밀봉하여 저장하시오.

  P501：...에 내용물 / 용기를 폐기 하시오.

아연보로하이드라이드 화학적 특성, 용도, 생산

• 화학적 성질

  Zinc borohydride ether solution is sensitive to moisture and should be stored and used under the protection of inert gas.

• 용도

  zinc borohydride is unique because of the better coordination ability of Zn2+, which imparts selectivity in hydridetransferring reactions. Zinc borohydride is moderately stable in ethereal solution and has many applications in organic synthesis. Zinc borohydride, as a nonconventional hydride transferring agent, has been reported as an efficient chemo-, regio- and stereoselective reducing agent in several complex substrates. It can be used in a range of aprotic solvents such as, THF, Et2O and DME. Several combination reducing systems of Zn(BH4)2 such as Zn(BH4)2/TMEDA, Zn(BH4)2/Me3SiCl, Zn(BH4)2/ TFA/DME, Zn(BH4 ) 2 /H2O, 1Zn(BH4 ) 2 /Al 2O3 , and Zn(BH4)2/C are interesting and have been used for different reduction purposes.

• 제조 방법

  Zinc borohydride (Zn(BH4)2) needs to be prepared by in situ reaction, anhydrous zinc chloride is reacted with sodium borohydride in anhydrous ether solvent.

• 화학 반응

  Zinc borohydride is often used as a reducing agent in organic synthesis, and its reducing ability is comparable to that of lithium aluminum hydride, and its selectivity is good. It can selectively reduce aldehydes, ketones, carboxylic acids and their derivatives, imines, nitriles, epoxy compounds, alkenes (alkynes), etc., and has good stereoselectivity for chiral molecules. Because the ether solution of zinc borohydride is neutral, it is very suitable for substrates containing base-sensitive functional groups such as cyano, ester, γ-lactone, etc. In addition, when saturated ketones and α,β-unsaturated ketones coexist, the reduction of saturated ketones can be preferentially achieved selectively.
  
  Reduction Reaction Zinc Borohydride

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