Dicyclohexylcarbodiimide → N-(tert-Butyloxycarbonyl)glycine N-hydroxysuccinimide ester

HRID 528674

反応式

HRID 528674 の反応式
[C:1]([NH:8][CH2:9][C:10]([OH:12])=[O:11])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].O[N:14]1[C:18](=[O:19])[CH2:17][CH2:16][C:15]1=[O:20].C1(N=C=NC2CCCCC2)CCCCC1>C(Cl)Cl>[C:4]([O:3][C:1]([NH:8][CH2:9][C:10]([O:12][N:14]1[C:18](=[O:19])[CH2:17][CH2:16][C:15]1=[O:20])=[O:11])=[O:2])([CH3:6])([CH3:7])[CH3:5]

参加物

5

実験手順

N-Boc-glycine (7.31 g, 41.7 mmol) was dissolved in 100 mL of DCM and to the cooled (15° C.) solution N-hydroxysuccinimide (5.28 g, 45.9 mmol) was added. N,N′-dicyclohexylcarbodiimide (9.47 g, 45.9 mmol) was added to the formed suspension under vigorous stirring. After a few seconds, a cloudy white suspension formed, the mixture was allowed to reach room temperature and stirred for 1 h. It was subsequently filtrated over celite, washed with 50 mL saturated sodium bicarbonate, dried over sodium sulfate and concentrated in vacuo to yield a crystalline powder. Yield: 7.02 g, 61.8%

後処理

  1. additionwas added
  2. waitAfter a few seconds
  3. customa cloudy white suspension formed
  4. customto reach room temperature
  5. filtrationIt was subsequently filtrated over celite
  6. washwashed with 50 mL saturated sodium bicarbonate
  7. dry with materialdried over sodium sulfate
  8. concentrationconcentrated in vacuo
  9. customto yield a crystalline powder

出典と根拠

ORDレコード
ord-5de66e3e0b704fb984cf6ce0ec846149
出典データセット
uspto-grants-2016_05
特許番号
US09346814B2

関連ノート

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