Sodium hydride → 2-(7-chloro-2-methyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(pyridin-4-yl)ethanol
Reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6]3[CH2:14][N:13]([CH3:15])[CH2:12][CH2:11][C:7]=3[NH:8][C:9]=2[CH:10]=1.[H-].[Na+].[O:18]1[CH2:20][CH:19]1[C:21]1[CH:26]=[CH:25][N:24]=[CH:23][CH:22]=1>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6]3[CH2:14][N:13]([CH3:15])[CH2:12][CH2:11][C:7]=3[N:8]([CH2:20][CH:19]([C:21]3[CH:26]=[CH:25][N:24]=[CH:23][CH:22]=3)[OH:18])[C:9]=2[CH:10]=1Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
To a stirred solution of 7-chloro-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (0.5 g, 2.265 mmol) in anhydrous DMF was added sodium hydride (271 mg, 3 eq.) portionwise followed by 4-(oxiran-2-yl)pyridine (548 mg, 4.5 mmol) at RT. The reaction mixture was stirred for 12 h. The reaction mixture was quenched with ice water and extracted with EtOAc, the organic layer washed with water, dried on anhydrous sodium sulfate, concentrated under vacuum to obtain crude product that was triturated with diethyl ether to obtain 2-(7-chloro-2-methyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(pyridin-4-yl)ethanol as solid. 1H NMR (CDCl3, freebase) δ (ppm): 8.53 (d, 2H), 7.2 (m, 3H), 7.14 (d, 1H), 7.05 (d, 1H), 4.82 (t, 1H), 4.03 (d, 2H), 3.4 (q, 2H), 2.85 (m, 1H), 2.76 (m, 1H), 2.64 (m, 2H), 2.37 (s, 3H). Separation by chiral HPLC provided enantiomers 53a and 53b.
Workup
- customThe reaction mixture was quenched with ice water
- extractionextracted with EtOAc
- washthe organic layer washed with water
- dry with materialdried on anhydrous sodium sulfate
- concentrationconcentrated under vacuum
- customto obtain crude product that
- customwas triturated with diethyl ether
Sources & evidence
- ORD record
- ord-c9517a3155a1456fa880de61ac39f324
- Source dataset
- uspto-grants-2014_07
- Patent number
- US08791132B2
Reaction notes
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