Methyl iodide → 2-(1-Methyl-3-morpholin-4-ylmethyl-1H-indol-6-yloxy)-benzothiazole

HRID 1947519Notes

Reaction equation

HRID 1947519 reaction equation
[N:1]1([CH2:7][C:8]2[C:16]3[C:11](=[CH:12][C:13]([O:17][C:18]4[S:19][C:20]5[CH:26]=[CH:25][CH:24]=[CH:23][C:21]=5[N:22]=4)=[CH:14][CH:15]=3)[NH:10][CH:9]=2)[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.[H-].[Na+].[CH3:29]I>CN(C=O)C>[CH3:29][N:10]1[C:11]2[C:16](=[CH:15][CH:14]=[C:13]([O:17][C:18]3[S:19][C:20]4[CH:26]=[CH:25][CH:24]=[CH:23][C:21]=4[N:22]=3)[CH:12]=2)[C:8]([CH2:7][N:1]2[CH2:6][CH2:5][O:4][CH2:3][CH2:2]2)=[CH:9]1

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 595777422-(3-morpholin-4-ylmethyl-1H-indol-6-yloxy)-benzothiazole

Product 1

HCID 595774742-(1-Methyl-3-morpholin-4-ylmethyl-1H-indol-6-yloxy)-benzothiazoleYield 43.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a cooled (0° C.) solution of 2-(3-morpholin-4-ylmethyl-1H-indol-6-yloxy)-benzothiazole (280 mg, 0.77 mmol) in DMF (4 mL) was added NaH (95%, 29 mg, 1.15 mmol) and the resulting suspension was stirred (0° C., 15 min) then warmed (rt, 30 min). The reaction mixture was cooled (0° C.) and treated with methyliodide (72 μL, 163 mg, 1.15 mmol) and then warmed (rt, 30 min). The reaction mixture was partitioned with EtOAc and brine (20 mL each). The organic layer was dried, filtered and concentrated in vacuo. The resulting residue was purified by silica gel flash chromatography using MeOH:DCM (0-20%) to provide the title compound as a clear oil (126 mg, 43%). MS (ESI): mass calcd. for C21H21N3O2S, 379.4; m/z found, 380.1 [M+H]+. 1H NMR (500 MHz, CDCl3): 7.79 (d, J=8.6, 1H), 7.76 (d, J=7.7, 1H), 7.66 (d, J=8.0, 1H), 7.41-7.38 (m, 1H), 7.29 (d, J=2.1, 1H), 7.29-7.25 (m, 1H), 7.12 (dd, J=8.6, 2.1, 1H), 3.77 (5, 3H), 3.74 (t, J=4.6, 4H), 3.71 (5, 2H), 2.53 (br s, 4H).

Workup

  1. temperaturethen warmed (rt, 30 min)
  2. temperatureThe reaction mixture was cooled (0° C.)
  3. temperaturewarmed (rt, 30 min)
  4. customThe reaction mixture was partitioned with EtOAc and brine (20 mL each)
  5. customThe organic layer was dried
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe resulting residue was purified by silica gel flash chromatography

Sources & evidence

ORD record
ord-5a1af9259c8e4b6988f086be90825105
Source dataset
uspto-grants-2013_03
Patent number
US08399465B2

Reaction notes

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