Potassium Carbonate → 2-(1-Acetyl-6-fluoro-1H-indol-3-ylmethyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 2110526노트

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HRID 2110526 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH2:10][CH:9]1[CH:13]=[CH:14][CH2:15][N:16]([C:25](=[O:27])[CH3:26])[C:17]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:18]=1Br)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.[N+](CCCC)(CCCC)(CCCC)CCCC.[Cl-].C(OCC)C.CC([O-])=O.CC([O-])=O.[Pd+2]>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH2:10][CH:9]1[CH2:13][C:14]1[C:18]2[C:17](=[CH:22][C:21]([F:23])=[CH:20][CH:19]=2)[N:16]([C:25](=[O:27])[CH3:26])[CH:15]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

참가 물질

7

반응물 2

HCID 11430Potassium CarbonateHCID 674141342-{3-[Acetyl-(2-bromo-5-fluoro-phenyl)-amino]-propenyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 674128552-(1-Acetyl-6-fluoro-1H-indol-3-ylmethyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

시약·촉매·용매 4

HCID 70681Tetrabutylammonium Chloride촉매HCID 167845palladium(II) acetate촉매HCID 3283Diethyl Ether용매HCID 6228Dimethylformamide용매

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온도
85 °C

실험 절차

Under a nitrogen atmosphere, a solution of 18 (66 g, 0.15 mol) in anhydrous DMF (350 mL) was charged with (n-Bu)4NCl (41.5 g, 0.15 mol), K2CO3 (20.6 g, 0.15 mol), NaHCO2 (10.2 g, 0.15 mol), and Pd(OAc)2 (3.35 g, 0.015 mol) at ambient temperature. The heterogeneous mixture was immersed in a pre-heated (85° C.) oil bath. After 1 h, TLC analysis revealed some 18 remained therefore more catalyst (1 g) was added. After 1.5 h, another charge of catalyst (0.6 g) was added. After an additional 1.5 h of heating, 18 had been completely consumed by TLC analysis [TLC analysis, 2% MeOH/DCM, Rf(18)=0.7; Rf(19)=0.8]. The warm reaction mixture was transferred to an ice water bath to cool then diluted with diethyl ether and filtered through a pad of celite. The solids were washed with diethyl ether and the filtrate was washed several times with water to remove DMF then once with brine, dried over anhydrous Na2SO4, filtered, and concentrated to afford 52.5 g of crude 19 which was used without further purification. 1H NMR (CDCl3, 300 MHz) δ8.18 (m, 1H), 7.60 (m, 1H), 7.18 (m, 1H), 7.05 (dt, J=2.4, 8.7 Hz, 1H), 4.13 (m, 1H), 3.41 (m, 1H), 3.33 (m, 2H), 3.17 (app dd, J=14.1, 38.1 Hz, 1H), 2.61 (s, 3H), 1.83 (m, 3H), 1.69 (m, 1H), 1.49 (s, 9H) ppm.

후처리

  1. waitAfter 1.5 h
  2. additionwas added
  3. temperatureAfter an additional 1.5 h of heating
  4. custom18 had been completely consumed by TLC analysis [TLC analysis, 2% MeOH/DCM, Rf(18)=0.7; Rf(19)=0.8]
  5. customThe warm reaction mixture
  6. customwas transferred to an ice water bath
  7. temperatureto cool
  8. filtrationfiltered through a pad of celite
  9. washThe solids were washed with diethyl ether
  10. washthe filtrate was washed several times with water
  11. customto remove DMF
  12. dry with materialonce with brine, dried over anhydrous Na2SO4
  13. filtrationfiltered
  14. concentrationconcentrated
  15. customto afford 52.5 g of crude 19 which
  16. customwas used without further purification

출처 및 근거

ORD 기록
ord-1dad5651f14b4087ad14e7834ab5fac8
출처 데이터셋
uspto-grants-2009_04
특허 번호
US07517906B2

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