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Water → 6,6-Dimethyl-2-[6-(2-methoxy-6-methylpyridin-3-yl)-2,3-dihydro-4h-1,4-benzoxazin-4-yl]-6,7-dihydro[1,3]thiazolo[5,4-c]pyridin-4(5h)-one

HRID 885979
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HRID 885979 반응식
Br[C:2]1[CH:3]=[CH:4][C:5]2[O:10][CH2:9][CH2:8][N:7]([C:11]3[S:12][C:13]4[CH2:14]C(C)(C)N[C:17](=O)[C:18]=4[N:19]=3)[C:6]=2[CH:23]=1.C(=O)([O-])[O-].[Na+].[Na+].[CH3:30][O:31][C:32]1[C:37](B(O)O)=[CH:36][CH:35]=[C:34]([CH3:41])[N:33]=1.[OH2:42]>C1COCC1.[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:5][C:6]1([CH3:23])[NH:7][C:14](=[O:42])[C:13]2[S:12][C:11]([N:7]3[C:6]4[CH:23]=[C:2]([C:37]5[C:32]([O:31][CH3:30])=[N:33][C:34]([CH3:41])=[CH:35][CH:36]=5)[CH:3]=[CH:4][C:5]=4[O:10][CH2:9][CH2:8]3)=[N:19][C:18]=2[CH2:17]1
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8

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HCID 962WaterHCID 10340Sodium CarbonateHCID 27631212-Methoxy-6-methylpyridine-3-boronic acidHCID 685972362-(6-Bromo-2,3-dihydrobenzo[1,4]oxazin-4-yl)-6,6-dimethyl-6,7-dihydro-[1,3]thiazolo[5,4-d]pyridin-4(5h)-one

생성물 1

HCID 671874466,6-Dimethyl-2-[6-(2-methoxy-6-methylpyridin-3-yl)-2,3-dihydro-4h-1,4-benzoxazin-4-yl]-6,7-dihydro[1,3]thiazolo[5,4-c]pyridin-4(5h)-one
수율 25%

시약·촉매·용매 3

HCID 74236Tetrabutylammonium Bromide촉매HCID 178418397HCID 178418397, 화합물촉매HCID 8028Tetrahydrofuran용매

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온도
120 °C

실험 절차

To a suspension of Example 39 (100 mg, 0.254 mmol) in THF (3 mL) and water (1 mL) was added tetra-n-butylammonium bromide (164 mg, 0.509 mmol), sodium carbonate (54 mg, 0.509 mmol), 2-methoxy-6-methylpyridine-3-boronic acid (85 mg, 0.509 mmol) and tetrakis(triphenylphosphine)palladium(0) (catalytic amount). The reaction was heated at 120° C. under microwave irradiation for 20 minutes. The resulting mixture was partitioned between DCM (50 mL) and water (50 mL); the organic fraction was washed with brine (50 mL), dried (MgSO4), and concentrated in vacuo. The residue was purified by preparative HPLC (Method 6) to yield the title compound (28 mg, 25%) as a beige solid. δH (CDCl3) 8.06 (1H, d, J 1.9 Hz), 7.50 (1H, d, J 7.3 Hz), 7.26 (1H, dd, J 8.5 and 2.1 Hz), 6.99 (1H, d, J 8.5 Hz), 6.81 (1H, d, J 7.5 Hz), 5.22 (1H, br. s), 4.39-4.31 (2H, m), 4.26-4.19 (2H, m), 4.00 (3H, s), 2.87 (2H, s), 2.49 (3H, s), 1.39 (6H, s). LCMS (ES+) 437.0 (M+H)+, RT 3.99 minutes (Method 1).

후처리

  1. customThe resulting mixture was partitioned between DCM (50 mL) and water (50 mL)
  2. washthe organic fraction was washed with brine (50 mL)
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by preparative HPLC (Method 6)

출처 및 근거

ORD 기록
ord-b1452365d4614765aafe695df75b6a00
출처 데이터셋
uspto-grants-2012_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08242116B2

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