2-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenyl → 2-(2-(tert-butylamino)quinazolin-8-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one

HRID 1056254노트

반응식

HRID 1056254 반응식
CC1(C)C(C)(C)OB([C:9]2[NH:17][C:16]3[CH2:15][CH2:14][NH:13][C:12](=[O:18])[C:11]=3[CH:10]=2)O1.CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C.Br[C:55]1[CH:56]=[CH:57][CH:58]=[C:59]2[C:64]=1[N:63]=[C:62]([NH:65][C:66]([CH3:69])([CH3:68])[CH3:67])[N:61]=[CH:60]2>O1CCOCC1.O.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[C:66]([NH:65][C:62]1[N:61]=[CH:60][C:59]2[C:64](=[C:55]([C:9]3[NH:17][C:16]4[CH2:15][CH2:14][NH:13][C:12](=[O:18])[C:11]=4[CH:10]=3)[CH:56]=[CH:57][CH:58]=2)[N:63]=1)([CH3:69])([CH3:67])[CH3:68]

참가 물질

7

반응물 3

HCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 897819638-bromo-N-tert-butylquinazolin-2-amineHCID 897834962-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-YL)-1,5,6,7-tetrahydro-4H-pyrrolo[3,2-C]pyridin-4-one

생성물 1

HCID 897838862-(2-(tert-butylamino)quinazolin-8-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one수율 56%

시약·촉매·용매 3

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 962Water용매2회HCID 312751,4-Dioxane용매

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온도
110 °C

실험 절차

8-Bromo-2-chloroquinazoline (D-L Chiral Chemicals, LLC, Princeton, N.J.) (200 mg, 0.82 mmol) was treated with DMF (2.0 mL) and 2-methylpropan-2-amine (Aldrich Chemical Company, 0.44 mL, 4.11 mmol) and stirred at RT overnight (17 h). The reaction mixture was treated with water, extracted with EtOAc (30 mL), washed with brine (2×), dried over MgSO4, filtered and concentrated. The crude residue was purified on the ISCO Combiflash RF (12 g Thomson SingleStep column, using a gradient of 0-50% EtOAc in hexanes) affording 8-bromo-N-(tert-butyl)quinazolin-2-amine (374a) (94 mg, 0.34 mmol, 41% yield) as a light yellow amorphous solid. 1H NMR (400 MHz, CDCl3) δ ppm 8.87 (1H, s), 7.95 (1H, dd, J=7.5, 1.3 Hz), 7.58 (1H, dd, J=7.9, 1.3 Hz), 7.05 (1H, t, J=7.7 Hz), 5.43 (1H, br. s.), 1.54 (9H, s). m/z (ESI, +ve ion) 280.0/282.0 (M+H)+. A 5-mL glass microwave reaction vessel was charged with 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one (609) (120 mg, 0.46 mmol), K2PO4 (182 mg, 0.86 mmol), Pd2dba3 (Strem Chemicals, 13.07 mg, 0.014 mmol), Xphos (Strem Chemicals, 13.61 mg, 0.03 mmol) and 8-bromo-N-(tert-butyl)quinazolin-2-amine (374a) (80 mg, 0.29 mmol) in dioxane (2.5 mL) and water (0.80 mL). The reaction was stirred and heated in a heating block at 110° C. for 1 h. The reaction mixture was treated with water, extracted with EtOAc (30 mL), washed with brine and concentrated. The crude residue was purified on the ISCO Combiflash RF (25 g Thomson SingleStep column, using a gradient of 0-20% MeOH) affording 2-(2-(tert-butylamino)quinazolin-8-yl)-6,7-dihydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-one (53.9 mg, 0.16 mmol, 56% yield) as a light yellow amorphous solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 12.37 (1H, br. s.), 9.17 (1H, s), 8.10 (1H, d, J=6.8 Hz), 7.64 (1H, d, J=7.0 Hz), 7.35 (1H, s), 7.25 (1H, t, J=7.6 Hz), 7.05 (1H, br. s.), 6.98 (1H, br. s.), 3.40-3.47 (3H, m), 2.92 (2H, br. s.), 1.52 (9H, s). m/z (ESI, +ve ion) 336.0 (M+H)+.

후처리

  1. extractionextracted with EtOAc (30 mL)
  2. washwashed with brine
  3. concentrationconcentrated
  4. customThe crude residue was purified on the ISCO Combiflash RF (25 g Thomson SingleStep column

출처 및 근거

ORD 기록
ord-1b494edd788640849559e9f8d3a26a5f
출처 데이터셋
uspto-grants-2016_07
특허 번호
US09394297B2

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