Water → 2-(2-methyl-8-(trifluoromethyl)-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(pyridin-4-yl)ethanol

HRID 2408589Notes

Reaction equation

HRID 2408589 reaction equation
[CH3:1][N:2]1[CH2:18][CH2:17][C:5]2[NH:6][C:7]3[CH:8]=[CH:9][C:10]([C:13]([F:16])([F:15])[F:14])=[CH:11][C:12]=3[C:4]=2[CH2:3]1.[H-].[Na+].[O:21]1[CH2:23][CH:22]1[C:24]1[CH:29]=[CH:28][N:27]=[CH:26][CH:25]=1.O>CN(C=O)C>[CH3:1][N:2]1[CH2:18][CH2:17][C:5]2[N:6]([CH2:23][CH:22]([C:24]3[CH:29]=[CH:28][N:27]=[CH:26][CH:25]=3)[OH:21])[C:7]3[CH:8]=[CH:9][C:10]([C:13]([F:16])([F:15])[F:14])=[CH:11][C:12]=3[C:4]=2[CH2:3]1

Participants

6

Reactant 4

HCID 962WaterHCID 24758Sodium hydrideHCID 109534834-(Oxiran-2-yl)pyridineHCID 67311103HCID 67311103, compound

Product 1

HCID 601977812-(2-methyl-8-(trifluoromethyl)-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(pyridin-4-yl)ethanol

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-methyl-8-(trifluoromethyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (1.0 g, 3.937 mmol) in DMF (10 mL) was added sodium hydride (472 mg, 11.81 mmol) in portions at RT. After stirring at RT for 15 min, the suspension was allowed to cool to 0° C. and 4-(oxiran-2-yl)pyridine (762 mg, 6.299 mmol) was added dropwise into the reaction mixture, which was stirred at RT overnight. The reaction mixture was poured into ice-cooled water and extracted with EtOAc (3×50 mL). The organic layer was washed with water (2×50 mL), dried over anhydrous sodium sulfate and concentrated. The solid obtained was re-crystallized in DCM-diethyl ether to yield 2-(2-methyl-8-(trifluoromethyl)-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(pyridin-4-yl)ethanol. 1H NMR (CDCl3, freebase) δ (ppm): 8.59 (d, 2H), 7.4 (s, 1H), 7.39 (d, 1H), 7.3 (d, 1H), 7.19 (d, 2H), 4.68 (m, 1H), 4.1 (m, 2H), 3.4 (dd, 2H), 2.82 (m, 1H), 2.74 (bs, 2H), 2.6 (m, 1H), 2.4 (s, 3H). Separation by chiral HPLC provides enantiomers 6a and 6b.

Workup

  1. temperatureto cool to 0° C.
  2. stirringwas stirred at RT overnight
  3. additionThe reaction mixture was poured into ice-
  4. extractionextracted with EtOAc (3×50 mL)
  5. washThe organic layer was washed with water (2×50 mL)
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated
  8. customThe solid obtained
  9. customwas re-crystallized in DCM-diethyl ether

Sources & evidence

ORD record
ord-3b68973cd4f34b22a88e8586bfd109e4
Source dataset
uspto-grants-2014_08
Patent number
US08815843B2

Reaction notes

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