Iodoethane → 2-[N-(Benzyloxycarbonyl)-N-methylaminomethyl]-1-ethyl-1H-indole

HRID 1921002Notes

Reaction equation

HRID 1921002 reaction equation
[H-].[Na+].[CH2:3]([O:10][C:11]([N:13]([CH2:15][C:16]1[NH:17][C:18]2[C:23]([CH:24]=1)=[CH:22][CH:21]=[CH:20][CH:19]=2)[CH3:14])=[O:12])[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.[CH2:25](I)[CH3:26]>CN(C=O)C.O>[CH2:3]([O:10][C:11]([N:13]([CH2:15][C:16]1[N:17]([CH2:25][CH3:26])[C:18]2[C:23]([CH:24]=1)=[CH:22][CH:21]=[CH:20][CH:19]=2)[CH3:14])=[O:12])[C:4]1[CH:5]=[CH:6][CH:7]=[CH:8][CH:9]=1

Participants

6

Reactant 3

HCID 6340IodoethaneHCID 24758Sodium hydride2×HCID 574408432-[N-(Benzyloxycarbonyl)-N-methylaminomethyl]-1H-indole

Product 1

HCID 225937652-[N-(Benzyloxycarbonyl)-N-methylaminomethyl]-1-ethyl-1H-indoleYield 87%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

NaH (60% dispersion in mineral oil, 0.25 g, 7.1 mmole) was added portionwise, allowing for gas evolution, to a solution of 2-[N-(benzyloxycarbonyl)N-methylaminomethyl]-1H-indole (1.40 g, 4.75 mmole) in DMF (35 mL) at 0° C. When the NaH addition was complete, ethyl iodide (0.42 mL, 5.2 mmole) was added at 0° C. The reaction was stirred at 0° C. for 15 minutes then at RT overnight. The reaction was diluted with water and extracted with ethyl acetate. The combined extracts were dried over K2CO3 and concentrated to afford the title compound (1.30 g, 87%) as an orange solid: MS (ES) m/e 323 (M+H)+.

Workup

  1. customat RT
  2. customovernight
  3. extractionextracted with ethyl acetate
  4. dry with materialThe combined extracts were dried over K2CO3
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-ca114cb17c754510a7c9cd45f4d555be
Source dataset
uspto-grants-2012_05
Patent number
US08173646B2

Reaction notes

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