Potassium Carbonate → {N-[(1R)-1-Carbamoyl-3-methyl-butyl]-N-(4-chlorobenzenesulfonyl)amino}acetic acid tert-butyl ester

HRID 507303

반응식

HRID 507303 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C@H:12]([CH2:16][CH:17]([CH3:19])[CH3:18])[C:13]([NH2:15])=[O:14])(=[O:10])=[O:9])=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[C:26]([O:30][C:31](=[O:34])[CH2:32]Br)([CH3:29])([CH3:28])[CH3:27]>CN(C=O)C>[C:26]([O:30][C:31](=[O:34])[CH2:32][N:11]([C@@H:12]([C:13](=[O:14])[NH2:15])[CH2:16][CH:17]([CH3:19])[CH3:18])[S:8]([C:5]1[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=1)(=[O:9])=[O:10])([CH3:29])([CH3:28])[CH3:27]

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 79177tert-Butyl bromoacetateHCID 59001058(2R)-2-(4-Chlorobenzenesulfonylamino)-4-methylpentanoic acid amide

생성물 1

HCID 59001051{N-[(1R)-1-Carbamoyl-3-methyl-butyl]-N-(4-chlorobenzenesulfonyl)amino}acetic acid tert-butyl ester수율 35%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

반응 조건

온도
70 °C

실험 절차

(2R)-2-(4-Chlorobenzenesulfonylamino)-4-methylpentanoic acid amide (3.00 g, 9.87 mmol) was dissolved in DMF (50 mL). To the solution was added potassium carbonate (6.0 g, 39 mmol) and bromoacetic acid tert-butyl ester (6.0 mL, 39 mmol). The solution was heated to 70° C. for 3 h. The reaction was quenched with EtOAc and saturated NaHCO3. The organic layer was washed with brine, dried over MgSO4, and concentrated. The crude oil was further purified on a Biotage 40M (loaded in CH2Cl2, eluted in 30% EtOAc/hexanes) to afford a white powder (1.2 g, 35%). MS (ESI), (M+H)+ 446.3; 1H NMR (CDCl3) δ 7.76 (d, 2H, J=8.0), 7.52 (d, 2H, J=8.0), 6.61 (br s, 1H) 5.45 (s, 1H), 4.15-4.18 (m, 1H), 3.09-3.24 (m, 2H), 2.50-2.58 (m, 4H), 2.31-2.39 (m, 2H), 1.92-1.99 (m, 1H), 1.15-1.59 (m, 8H), 1.00-1.04 (m, 7H), 0.71-0.74 (m, 6H).

후처리

  1. customThe reaction was quenched with EtOAc and saturated NaHCO3
  2. washThe organic layer was washed with brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customThe crude oil was further purified on a Biotage 40M (loaded in CH2Cl2, eluted in 30% EtOAc/hexanes)

출처 및 근거

ORD 기록
ord-a6e288e44f13429880b7f1f2eadaef70
출처 데이터셋
uspto-grants-2010_08
특허 번호
US07786122B2

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