8-Hydroxyquinoline → HCID 57950478, compound

HRID 930752Notes

Reaction equation

HRID 930752 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[N:3][C:2]=1[CH2:7][O:8][C:9]1[CH:14]=[CH:13][NH:12][C:11](=[O:15])[CH:10]=1.Br[C:17]1[CH:18]=[CH:19][C:20]2[C:21]3[CH2:30][N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:28][CH2:27][C:22]=3[N:23]([CH3:26])[C:24]=2[CH:25]=1.OC1C=CC=C2C=1N=CC=C2.C([O-])([O-])=O.[Cs+].[Cs+]>CS(C)=O.[Cu]I>[CH3:26][N:23]1[C:24]2[CH:25]=[C:17]([N:12]3[CH:13]=[CH:14][C:9]([O:8][CH2:7][C:2]4[N:3]=[CH:4][CH:5]=[CH:6][N:1]=4)=[CH:10][C:11]3=[O:15])[CH:18]=[CH:19][C:20]=2[C:21]2[CH2:30][N:29]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:28][CH2:27][C:22]1=2

Participants

7

Reactant 4

HCID 19238-HydroxyquinolineHCID 10796Cesium carbonateHCID 57950375tert-Butyl 7-bromo-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylateHCID 57950465HCID 57950465, compound

Product 1

HCID 57950478HCID 57950478, compoundYield 44.1%

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
135 °C

Procedure

A suspension of 4-(pyrimidin-2-ylmethoxy)pyridin-2(1H)-one (242 mg, 1.19 mmol), tert-butyl 7-bromo-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate (522 mg, 1.43 mmol), CuI (272 mg, 1.43 mmol), 8-hydroxyquinoline (35 mg, 0.24 mmol) and Cs2CO3 (426 mg, 1.31 mmol) in DMSO (10 mL) was degassed under reduced pressure for 45 min. The suspension was put under Ar and heated at 135° C. with stirring overnight. The suspension was cooled, 40:9:1 CH2Cl2/MeOH/NH4OH (50 mL) was added, and the resulting suspension was stirred at 25° C. for 1 h. The suspension was passed through a plug of silica gel, and the filtrate was washed with brine. The solution was dried over Na2SO4 and concentrated under reduced pressure. Flash chromatography (silica gel, (1:1 EtOAc/hexanes)/(4:0.9:0.1 CH2Cl2/MeOH/NH4OH), 100:0 to 0:100) yielded the title compound (256 mg, 44%) as a yellow solid: 1H NMR (500 MHz, CDCl3) δ 8.81 (d, J=4.5 Hz, 1H), 7.50 (d, J=8.0 Hz, 1H), 7.32 (d, J=7.5 Hz, 1H), 7.31-7.27 (m, 3H), 7.01 (br d, J=8.0 Hz, 1H), 6.17 (dd, J=7.5, 2.8 Hz, 1H), 6.00 (d, J=2.8 Hz, 1H), 5.32 (s, 2H), 4.64 (br s, 2H), 3.88-3.79 (m, 2H), 3.62 (s, 3H), 2.84-2.78 (m, 2H), 1.50 (s, 9H).

Workup

  1. customwas degassed under reduced pressure for 45 min
  2. temperatureThe suspension was cooled
  3. addition40:9:1 CH2Cl2/MeOH/NH4OH (50 mL) was added
  4. stirringthe resulting suspension was stirred at 25° C. for 1 h
  5. washthe filtrate was washed with brine
  6. dry with materialThe solution was dried over Na2SO4
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-4c62eb05306e45538e91383a897cf7da
Source dataset
uspto-grants-2016_03
Patent number
US09296743B2

Reaction notes

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