Potassium Carbonate → (R)-2-[4-(4-Thiophen-3-yl-benzoyl)-phenoxymethyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 1909754노트

반응식

HRID 1909754 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH2:10][C@@H:9]1[CH2:13][O:14][C:15]1[CH:20]=[CH:19][C:18]([C:21](=[O:29])[C:22]2[CH:27]=[CH:26][C:25](I)=[CH:24][CH:23]=2)=[CH:17][CH:16]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[S:30]1[CH:34]=[CH:33][C:32](B(O)O)=[CH:31]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(=O)([O-])[O-].[K+].[K+]>COCCOC.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.O.C(O)C>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH2:10][C@@H:9]1[CH2:13][O:14][C:15]1[CH:20]=[CH:19][C:18]([C:21](=[O:29])[C:22]2[CH:27]=[CH:26][C:25]([C:32]3[CH:33]=[CH:34][S:30][CH:31]=3)=[CH:24][CH:23]=2)=[CH:17][CH:16]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

참가 물질

9

반응물 4

HCID 11430Potassium CarbonateHCID 11776TriphenylphosphineHCID 581760Thiophene-3-boronic acidHCID 44221510(R)-2-[4-(4-Iodo-benzoyl)-phenoxymethyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 68999764(R)-2-[4-(4-Thiophen-3-yl-benzoyl)-phenoxymethyl]-pyrrolidine-1-carboxylic acid tert-butyl ester수율 60%

시약·촉매·용매 4

HCID 167845palladium(II) acetate촉매HCID 702Ethanol용매HCID 962Water용매HCID 80711,2-Dimethoxyethane용매

실험 절차

To a 25 mL press resistant vial which contained a suspension of (R)-2-[4-(4-Iodo-benzoyl)-phenoxymethyl]-pyrrolidine-1-carboxylic acid tert-butyl ester (250 mg, 0.5 mmol), thiophene-3-boronic acid (130 mg, 1 mmol), palladium(II) acetate (20 mg, 0.1 mmol) and triphenyl phosphine (60 mg, 0.25 mmol) in DME (10 mL) was added potassium carbonate (500 mg, 3 mmol), ethanol (1 mL) and water (1 mL) at rt. The tube was sealed and the mixture was allowed to stir at rt for 30 min and then was heated to 98° C. and stirred at 98° C. for 16 h. After cooling to rt, the mixture was poured onto 200 mL ice-water solution and then extracted with EtOAc (3×30 mL). The combined organic layers were washed with water (2×30 mL) and brine (20 mL). and dried over anhy. Na2SO4. The solvent was removed in vacuo to obtain the crude product which was purified by silica gel flash chromatography to afford title product, (130 mg, 60%); 1H NMR (400 MHz, CDCl3); δ 1.48 (s, 9H), 1.81-2.10 (m, 4H), 3.30-3.48 (m, 2H), 3.87-4.10 (m, 1H), 4.10-4.30 (m, 2H), 6.98-7. (m, 2H), 7.42-7.48 (m, 2H), 7.58-7.60 (m, 1H), 7.70 (d, J=8.4 Hz, 2H), 7.80-7.84 (m, 4H):

후처리

  1. customThe tube was sealed
  2. temperaturewas heated to 98° C.
  3. stirringstirred at 98° C. for 16 h
  4. temperatureAfter cooling to rt
  5. extractionextracted with EtOAc (3×30 mL)
  6. washThe combined organic layers were washed with water (2×30 mL) and brine (20 mL)
  7. customand dried over anhy
  8. customThe solvent was removed in vacuo
  9. customto obtain the crude product which
  10. customwas purified by silica gel flash chromatography

출처 및 근거

ORD 기록
ord-36aa49d132874aca80ba81fe00605160
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08598359B2

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