2,6-Diazaspiro[3.3]heptane-2-carboxylic acid tert-butyl ester hemioxylate

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H302：삼키면 유해함

  H312：피부와 접촉하면 유해함

• 예방조치문구

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

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

  P321：(…) 처치를 하시오.

2,6-Diazaspiro[3.3]heptane-2-carboxylic acid tert-butyl ester hemioxylate 화학적 특성, 용도, 생산

• 화학적 성질

  white to yellow Solid.

• 용도

  It is employed as a intermediate for pharmaceutical.

• 제조 방법

  Synthesis of 2,6-Diazaspiro[3.3]heptane-2-carboxylic acid tert-butyl ester hemioxylate: Take a 500mL single-necked bottle, add 6-toluenesulfonyl-2,6-diazaspiro[3.3]heptane-2-carboxylic acid tert-butyl ester (7g, 20mmol), dissolve in methanol (200mL), add magnesium chips (3.84 g) g, 0.16 mol, 8 equiv) and stirred at room temperature. The reaction solution gradually turned into a white viscous state with the dissolution of the magnesium scraps, and TLC showed that the reaction of the raw materials was completed. The solvent was removed by rotary evaporation, ether (150 mL) was added, stirred at room temperature for 1 h, filtered through celite, the filtrate was dried over anhydrous sodium sulfate, and an ethanol solution (3 mL) of anhydrous oxalic acid (0.89 g, 9.9 mmol, 0.5 equiv) was added dropwise, A white precipitate appeared immediately, which was filtered under reduced pressure to give 3.2 g of a colorless solid, 82%.

2,6-Diazaspiro[3.3]heptane-2-carboxylic acid tert-butyl ester hemioxylate 공급 업체

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