Sodium hydride → 2-(2-Methyl-8-trifluoromethoxy-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-1-pyridin-4-yl-ethanol

HRID 2408688Notes

Reaction equation

HRID 2408688 reaction equation
[CH3:1][N:2]1[CH2:19][CH2:18][C:5]2[NH:6][C:7]3[CH:8]=[CH:9][C:10]([O:13][C:14]([F:17])([F:16])[F:15])=[CH:11][C:12]=3[C:4]=2[CH2:3]1.[H-].[Na+].[O:22]1[CH2:24][CH:23]1[C:25]1[CH:30]=[CH:29][N:28]=[CH:27][CH:26]=1>CN(C=O)C>[CH3:1][N:2]1[CH2:19][CH2:18][C:5]2[N:6]([CH2:24][CH:23]([C:25]3[CH:30]=[CH:29][N:28]=[CH:27][CH:26]=3)[OH:22])[C:7]3[CH:8]=[CH:9][C:10]([O:13][C:14]([F:17])([F:15])[F:16])=[CH:11][C:12]=3[C:4]=2[CH2:3]1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 109534834-(Oxiran-2-yl)pyridineHCID 594549332-methyl-8-trifluoromethoxy-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Product 1

HCID 682836372-(2-Methyl-8-trifluoromethoxy-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-1-pyridin-4-yl-ethanol

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-methyl-8-trifluoromethoxy-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (1.0 g, 3.70 mmol) in DMF (10 mL) was added sodium hydride (445 mg, 11.12 mmol) under nitrogen at 0° C. After stirring for 10 min, 4-(oxiran-2-yl)pyridine (806 g, 6.66 mmol) was added dropwise under nitrogen and the reaction mixture was stirred at RT for 12 h. The progress of reaction was monitored by TLC and LCMS. The reaction mixture was poured into ice-cold water and extracted with EtOAc (2×100 mL). The combined organic layer was washed with water (5×50 mL) and dried over anhydrous sodium sulfate, concentrated and re-crystallized in diethyl ether to yield 2-(2-methyl-8-trifluoromethoxy-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-yl)-1-pyridin-4-yl-ethanol. 1H NMR (CDCl3, freebase) δ (ppm): 8.58 (d, 2H), 7.17-7.21 (m, 4H), 7.0 (d, 1H), 4.6 (m, 1H), 4.0 (m, 2H), 3.38 (dd, 2H), 2.8 (m, 1H), 2.7 (m, 2H), 2.6 (m, 1H), 2.18 (s, 3H). Separation by chiral HPLC provides enantiomers II-67a-b.

Workup

  1. stirringthe reaction mixture was stirred at RT for 12 h
  2. customThe progress of reaction
  3. additionThe reaction mixture was poured into ice-cold water
  4. extractionextracted with EtOAc (2×100 mL)
  5. washThe combined organic layer was washed with water (5×50 mL)
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated
  8. customre-crystallized in diethyl ether

Sources & evidence

ORD record
ord-81603629c4674673b9b51f0049e760c2
Source dataset
uspto-grants-2014_08
Patent number
US08815843B2

Reaction notes

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