1,4-Dioxane → 9-Fluoro-1-methyl-7-(4-methylpyridin-3-yl)-4,5-dihydro-[1,2,4]triazolo[4,3-a]quinoline

HRID 1521632노트

반응식

HRID 1521632 반응식
Br[C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([F:12])[CH:11]=1)[N:8]1[C:13]([CH3:16])=[N:14][N:15]=[C:7]1[CH2:6][CH2:5]2.[CH3:17][C:18]1[CH:23]=[CH:22][N:21]=[CH:20][C:19]=1B(O)O.O1CCOCC1.C([O-])(=O)C.[K+]>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].O>[F:12][C:10]1[CH:11]=[C:2]([C:19]2[CH:20]=[N:21][CH:22]=[CH:23][C:18]=2[CH3:17])[CH:3]=[C:4]2[C:9]=1[N:8]1[C:13]([CH3:16])=[N:14][N:15]=[C:7]1[CH2:6][CH2:5]2

참가 물질

7

반응물 4

HCID 312751,4-DioxaneHCID 517044Potassium AcetateHCID 27627114-Methylpyridine-3-Boronic AcidHCID 709780527-Bromo-9-fluoro-1-methyl-4,5-dihydro-[1,2,4]triazolo[4,3-a]quinoline

생성물 1

HCID 665757439-Fluoro-1-methyl-7-(4-methylpyridin-3-yl)-4,5-dihydro-[1,2,4]triazolo[4,3-a]quinoline

시약·촉매·용매 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 962Water용매

반응 조건

온도
100 °C

실험 절차

To a stirred solution of 7-bromo-9-fluoro-1-methyl-4,5-dihydro-[1,2,4]triazolo[4,3-a]quinoline (109-5; 1.8 g, 0.0063 mol) and (4-methylpyridin-3-yl)boronic acid (1.73 g, 0.0127 mol) in the mixture of 1,4-dioxan (10 mL) and water (10 mL) was added potassium acetate (1.88 g, 0.0191 mol). Reaction mass was purged with argon for 20 min. Then catalyst Pd(dppf)2Cl2 (0.260 g, 0.000319 mol) was added and allowed to stir at 100° C. for 12 h. The reaction mixture was filtered through CELITE bed and filter bed was thoroughly washed with ethyl acetate. The collected organic parts was concentrated under vacuum to afford the crude compound, which was purified by silica gel column chromatography to obtain title compound. 1H NMR (400 MHz, DMSO-d6) 8.46-8.44 (d, J=8 Hz, 1H), 8.422 (s, 1H), 7.52-7.48 (d, J=16 Hz, 1H), 7.423 (s, 1H), 7.36-7.35 (d, J=4 Hz, 1H), 2.99 (m, 4H), 2.52 (s, 3H), 2.31 (s, 3H). HPLC purity 98.68%, MS (M+1): 294.7.

후처리

  1. customReaction mass
  2. customwas purged with argon for 20 min
  3. filtrationThe reaction mixture was filtered through CELITE bed
  4. filtrationfilter bed
  5. washwas thoroughly washed with ethyl acetate
  6. concentrationThe collected organic parts was concentrated under vacuum
  7. customto afford the crude compound, which
  8. customwas purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-b506e83c5c084d68897ed07c34ccbee1
출처 데이터셋
uspto-grants-2015_07
특허 번호
US09073929B2

반응 노트

불러오는 중…