1H-Pyrrolo(2,3-b)pyridine → 1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrrolo[2,3-b]pyridine

HRID 85036

Reaction equation

HRID 85036 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][N:8]=2)[CH:3]=[CH:2]1.[H-].[Na+].Cl[CH2:13][O:14][CH2:15][CH2:16][Si:17]([CH3:20])([CH3:19])[CH3:18]>CN(C)C=O>[CH3:18][Si:17]([CH3:20])([CH3:19])[CH2:16][CH2:15][O:14][CH2:13][N:1]1[C:9]2=[N:8][CH:7]=[CH:6][CH:5]=[C:4]2[CH:3]=[CH:2]1

Participants

5

Reactant 3

HCID 92221H-Pyrrolo(2,3-b)pyridineHCID 24758Sodium hydrideHCID 27242712-Chloromethyl 2-(trimethylsilyl)ethyl ether

Product 1

HCID 584313511-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrrolo[2,3-b]pyridineYield 100.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of 7-azaindole (1.18 g, 10.0 mmol) in anhydrous dimethylformamide (10 mL) cooled to 0° C. was added NaH [60% dispersion in mineral oil](0.480 g, 12.0 mmol) in portions over 15 min. The resulting mixture was allowed to stir for 1 hr at 0° C., after which (2-(chloromethoxy)ethyl)trimethylsilane [SEM-Cl] (2.12 mL, 12.0 mmol) was added over 15 min. The resulting mixture was stirred for 1 hr, after which it was quenched with H2O (50 mL), and partioned between EtOAc and H2O. The organic layer was separated, washed with brine, dried over MgSO4, filtered, and evaporated in vacuo to yield a yellow oil (2.50 g, 100%). HPLC retention time: 2.66 minutes; MS ESI (m/z): 249.4 (M+1)+, calc. 248.

Workup

  1. stirringThe resulting mixture was stirred for 1 hr
  2. customafter which it was quenched with H2O (50 mL)
  3. customThe organic layer was separated
  4. washwashed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. customevaporated in vacuo

Sources & evidence

ORD record
ord-91f4e083c1914a8784c70848a1633c2b
Source dataset
uspto-grants-2014_09
Patent number
US08846909B2

Linked notes

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