Sodium bis(trimethylsilyl)amide → 4-(3-{2-[3-(Tert-butyl-dimethyl-silanyloxy)-4-phenyl-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-benzoic acid methyl ester

HRID 352575노트

반응식

HRID 352575 반응식
[C:1]([Si:5]([CH3:24])([CH3:23])[O:6][CH:7]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[CH2:8][CH2:9][CH:10]1[NH:14][C:13](=[O:15])[CH2:12][CH2:11]1)([CH3:4])([CH3:3])[CH3:2].C[Si]([N-][Si](C)(C)C)(C)C.[Na+].[CH3:35][O:36][C:37](=[O:48])[C:38]1[CH:43]=[CH:42][C:41]([CH2:44][CH2:45][CH2:46]Br)=[CH:40][CH:39]=1>CN(C=O)C>[CH3:35][O:36][C:37](=[O:48])[C:38]1[CH:43]=[CH:42][C:41]([CH2:44][CH2:45][CH2:46][N:14]2[C:13](=[O:15])[CH2:12][CH2:11][CH:10]2[CH2:9][CH2:8][CH:7]([O:6][Si:5]([C:1]([CH3:3])([CH3:2])[CH3:4])([CH3:24])[CH3:23])[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:40][CH:39]=1

참가 물질

5

반응물 3

HCID 2724254Sodium bis(trimethylsilyl)amideHCID 10801120Methyl 4-(3-bromopropyl)benzoateHCID 129700855-[3-(Tert-butyl-dimethyl-silanyloxy)-4-phenyl-butyl]-pyrrolidin-2-one

생성물 1

HCID 129700974-(3-{2-[3-(Tert-butyl-dimethyl-silanyloxy)-4-phenyl-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-benzoic acid methyl ester수율 70.3%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

반응 조건

온도
70 °C

실험 절차

To a solution of 5-[3-(tert-butyl-dimethyl-silanyloxy)-4-phenyl-butyl]-pyrrolidin-2-one (3.20 g, 9.21 mmol) in DMF (30 mL) at 0° C. was added NaHMDS (1M in THF, 11.5 mL, 11.5 mmol). After 1 h, 4-(3-bromo-propyl)-benzoic acid methyl ester (2.84 g, 11.0 mmol) was added and the reaction mixture was stirred at 70° C. for 18 h. The DMF was removed in vacuo and the residue was dissolved in EtOAc. The organic solution was washed with water, dried (MgSO4), filtered and concentrated. The residue was purified by medium pressure chromatography (30% EtOAc in hexanes) to yield 3.39 g of 4-(3-{2-[3-(tert-butyl-dimethyl-silanyloxy)-4-phenyl-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-benzoic acid methyl ester. 1H NMR (CDCl3) (selected peaks) δ7.92 (m, 2H), 7.25-7.09 (m, 7H), 3.86 (s, 3H), 3.80 (m, 1H), 3.61 (m, 1H), 3.46 (m, 1H), 2.90 (m, 1H), 2.78-2.57 (m, 4H), 2.38-2.18 (m, 2H), 0.83 (s, 9H); MS 524.1 (M+1).

후처리

  1. customThe DMF was removed in vacuo
  2. dissolutionthe residue was dissolved in EtOAc
  3. washThe organic solution was washed with water
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by medium pressure chromatography (30% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-45d3d88708554aa4ba375430f0684fff
출처 데이터셋
uspto-grants-2004_06
특허 번호
US06747054B2

반응 노트

불러오는 중…