Ammonium Chloride → (S)-t-Butyl 2-(2-(2-((tert-butyldiphenylsilyl)oxy)acetyl)hydrazinecarbonyl)pyrrolidine-1-carboxylate

HRID 710042노트

반응식

HRID 710042 반응식
[NH:1]([C:3]([C@@H:5]1[CH2:9][CH2:8][CH2:7][N:6]1[C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])=[O:4])[NH2:2].[Si:17]([O:34][CH2:35][C:36](O)=[O:37])([C:30]([CH3:33])([CH3:32])[CH3:31])([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1.[NH4+].[Cl-]>O.C(Cl)(Cl)Cl>[Si:17]([O:34][CH2:35][C:36]([NH:2][NH:1][C:3]([C@@H:5]1[CH2:9][CH2:8][CH2:7][N:6]1[C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])=[O:4])=[O:37])([C:30]([CH3:32])([CH3:33])[CH3:31])([C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)[C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1

참가 물질

8

반응물 5

HCID 25517Ammonium ChlorideHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 10014050tert-Butyl (2S)-2-(hydrazinecarbonyl)pyrrolidine-1-carboxylateHCID 111415642-((tert-Butyldiphenylsilyl)oxy)acetic acid

생성물 1

HCID 86706754(S)-t-Butyl 2-(2-(2-((tert-butyldiphenylsilyl)oxy)acetyl)hydrazinecarbonyl)pyrrolidine-1-carboxylate수율 61.1%

시약·촉매·용매 2

HCID 962Water용매HCID 6212Chloroform용매

실험 절차

A mixture of CHCl3 (100 mL) with (S)-t-butyl 2-(hydrazinecarbonyl)pyrrolidine-1-carboxylate (4.791 g), 2-((t-butyldiphenylsilyl)oxy)acetic acid (6.28 g), WSC.HCl (4.371 g) and HOBt.H2O (3.081 g) was stirred at room temperature for 15 hours. To the reaction mixture, a saturated aqueous solution of NH4Cl (500 mL) was added, followed by extraction with AcOEt (500 mL). The organic layer was washed successively with saturated aqueous sodium bicarbonate (500 mL) and brine (500 mL), dried (MgSO4), filtered and concentrated to give a crude product, which was further purified by silica gel chromatography (AcOEt/hexane) to give the titled compound (6.42 g, colorless amorphous.)

후처리

  1. extractionfollowed by extraction with AcOEt (500 mL)
  2. washThe organic layer was washed successively with saturated aqueous sodium bicarbonate (500 mL) and brine (500 mL)
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give a crude product, which
  7. customwas further purified by silica gel chromatography (AcOEt/hexane)

출처 및 근거

ORD 기록
ord-e8a1dea0fe524084abffffd8048bbc51
출처 데이터셋
uspto-grants-2015_11
특허 번호
US09181229B2

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