Sodium hydride → HCID 60197573, compound

HRID 2408699Notes

Reaction equation

HRID 2408699 reaction equation
[CH3:1][N:2]1[CH2:15][CH2:14][C:5]2[NH:6][C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]=2[CH2:3]1.[H-].[Na+].[O:18]1[CH2:20][CH:19]1[C:21]1[C:30]2[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=2)[N:24]=[CH:23][CH:22]=1>CN(C=O)C>[CH3:1][N:2]1[CH2:15][CH2:14][C:5]2[N:6]([CH2:20][CH:19]([C:21]3[C:30]4[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=4)[N:24]=[CH:23][CH:22]=3)[OH:18])[C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]=2[CH2:3]1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 2092911H-Pyrido[4,3-b]indole, 2,3,4,5-tetrahydro-2,8-dimethyl-HCID 13319576HCID 13319576, compound

Product 1

HCID 60197573HCID 60197573, compoundYield 25.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (300 mg, 1.5 mmol) in DMF (5 mL) was added sodium hydride (180 mg, 4.5 mmol) under nitrogen. After stirring at RT for 10 min, 4-(oxiran-2-yl)quinoline (384 mg, 2.25 mmol) was added dropwise under nitrogen into the reaction mixture, which was stirred at RT for 18 h. The progress of reaction was monitored by TLC, LCMS and NMR. The reaction mixture was poured in ice-cold water and extracted with EtOAc (2×50 mL). The combined organic layer was washed with water (3×50 mL), dried over anhydrous sodium sulfate and concentrated under reduced pressure. Re-crystallization with diethyl ether yielded 2-(2,8-dimethyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(quinolin-4-yl)ethanol (140 mg). 1H NMR (CDCl3, freebase) δ (ppm): 8.86 (d, 1H), 8.19 (d, 1H), 7.97 (d, 1H), 7.78 (t, 1H), 7.41 (d, 1H), 7.56 (t, 1H), 7.2 (d, 1H), 6.93-7.01 (m, 2H), 5.57 (t, 1H), 4.2 (dd, 1H), 4.1 (dd, 1H), 3.37 (dd, 2H), 2.83 (m, 1H), 2.71 (bs, 3H), 2.4 (s, 3H), 2.38 (s, 3H). Separation by chiral HPLC provides enantiomers II-90a-b.

Workup

  1. stirringwas stirred at RT for 18 h
  2. customThe progress of reaction
  3. additionThe reaction mixture was poured in ice-cold water
  4. extractionextracted with EtOAc (2×50 mL)
  5. washThe combined organic layer was washed with water (3×50 mL)
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-89625e6deb2a4819b6c59ed94a6959c3
Source dataset
uspto-grants-2014_08
Patent number
US08815843B2

Reaction notes

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