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Lawesson's reagent → methyl (2S)-4-[bis(2-{[(tert-butoxy)carbonyl]amino}ethyl)carbamothioyl]-2-{[(tert-butoxy) carbonyl]amino}butanoate

HRID 1923973
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HRID 1923973 반응식
[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][N:11]([CH2:29][CH2:30][NH:31][C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[C:12]([CH2:14][CH2:15][C@H:16]([NH:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[C:17]([O:19][CH3:20])=[O:18])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:48])=CC=1>C1COCC1.CN(C1C=CN=CC=1)C>[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][N:11]([CH2:29][CH2:30][NH:31][C:32]([O:34][C:35]([CH3:38])([CH3:37])[CH3:36])=[O:33])[C:12]([CH2:14][CH2:15][C@H:16]([NH:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[C:17]([O:19][CH3:20])=[O:18])=[S:48])=[O:7])([CH3:4])([CH3:3])[CH3:2]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 2

HCID 87949Lawesson's reagent2회HCID 59366631Methyl N2-(tert-butoxycarbonyl)-N5,N5-bis(2-((tert-butoxycarbonyl)amino)ethyl)-L-glutaminate

생성물 1

HCID 59366732methyl (2S)-4-[bis(2-{[(tert-butoxy)carbonyl]amino}ethyl)carbamothioyl]-2-{[(tert-butoxy) carbonyl]amino}butanoate수율 45.5%

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매
HCID 8028
Tetrahydrofuran
용매

실험 절차

To the solution of methyl (2S)-4-[bis(2-{[(tert-butoxy)carbonyl]amino}ethyl)carbamoyl]-2-{[(tert-butoxy)carbonyl]amino}butanoate XIV (610 mg, 1.12 mmol) in THF (10 mL) under argon was added Lawesson's reagent (680 mg, 1.68 mmol) and DMAP (13 mg, 0.11 mmol). The mixture was stirred at r.t. for 2 h and then refluxed over weekend. An additional two portions of Lawesson's reagent (900 mg, 2.24 mmol) and was added and the reaction was refluxed for another 4 h. The solvent was evaporated under reduced pressure and the crude product was purified on a silica gel column (1:6 EtOAc/hexane) to give methyl (2S)-4-[bis(2-{[(tert-butoxy)carbonyl]amino}ethyl)carbamothioyl]-2-{[(tert-butoxy)carbonyl]amino}butanoate XV (290 mg, 0.51 mmol, 45% yield). ESIMS found for C25H46N4O8S m/z 563 (M+H).

후처리

  1. temperaturerefluxed over weekend
  2. temperaturethe reaction was refluxed for another 4 h
  3. customThe solvent was evaporated under reduced pressure
  4. customthe crude product was purified on a silica gel column (1:6 EtOAc/hexane)

출처 및 근거

ORD 기록
ord-958c97d2ade64a5fb392cb6788a138eb
출처 데이터셋
uspto-grants-2012_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08178490B2

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