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Cesium carbonate → tert-Butyl (3S)-4-{6-[(5-chloro-2-methoxypyridin-3-yl)amino]pyridin-3-yl}-3-methylpiperazine-1-carboxylate

HRID 407741
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HRID 407741 반응식
[NH2:1][C:2]1[N:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][C@@H:9]2[CH3:21])=[CH:4][CH:3]=1.Br[C:23]1[C:24]([O:30][CH3:31])=[N:25][CH:26]=[C:27]([Cl:29])[CH:28]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C(=O)([O-])[O-].[Cs+].[Cs+]>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].O1CCOCC1>[Cl:29][C:27]1[CH:28]=[C:23]([NH:1][C:2]2[N:7]=[CH:6][C:5]([N:8]3[CH2:13][CH2:12][N:11]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:10][C@@H:9]3[CH3:21])=[CH:4][CH:3]=2)[C:24]([O:30][CH3:31])=[N:25][CH:26]=1
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참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 135677513-Bromo-5-chloro-2-methoxypyridineHCID 86683730(3S)-tert-Butyl 4-(6-Aminopyridin-3-yl)-3-methylpiperazine-1-carboxylate

생성물 1

HCID 86684013tert-Butyl (3S)-4-{6-[(5-chloro-2-methoxypyridin-3-yl)amino]pyridin-3-yl}-3-methylpiperazine-1-carboxylate
수율 57%

시약·촉매·용매 2

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

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온도
100 °C

실험 절차

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (40 mL), (S)-tert-butyl 4-(6-amino pyridin-3-yl)-3-methylpiperazine-1-carboxylate 105b (2.04 g, 7.0 mmol), 3-bromo-5-chloro-2-methoxypyridine (2.8 g, 12.6 mmol), Pd2(dba)3 (640 mg, 0.70 mmol), XantPhos (404.6 mg, 0.70 mmol), and cesium carbonate (4.56 g, 14.0 mmol). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for 4 h. After this time the reaction was cooled to room temperature. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 1:3 ethyl acetate/petroleum ether to afford 138a (1.7 g, 57%) as a yellow solid. MS-ESI: [M+H]+ 434.2

후처리

  1. customA 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customAfter three cycles of vacuum/argon flush
  3. temperatureAfter this time the reaction was cooled to room temperature
  4. filtrationIt was then filtered
  5. customthe filtrate was evaporated under reduced pressure
  6. customThe residue was purified by silica-gel column chromatography
  7. washeluting with 1:3 ethyl acetate/petroleum ether

출처 및 근거

ORD 기록
ord-aa647e8c3615435d80a8cceb77526f81
출처 데이터셋
uspto-grants-2014_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08754077B2

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