Sodium hydride → 4-(5-Fluoro-pyridin-2-yloxymethyl)-benzonitrile

HRID 1693889Notes

Reaction equation

HRID 1693889 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][N:3]=1.[OH:9][CH2:10][C:11]1[CH:18]=[CH:17][C:14]([C:15]#[N:16])=[CH:13][CH:12]=1.[H-].[Na+]>CN(C)C=O>[F:8][C:5]1[CH:6]=[CH:7][C:2]([O:9][CH2:10][C:11]2[CH:18]=[CH:17][C:14]([C:15]#[N:16])=[CH:13][CH:12]=2)=[N:3][CH:4]=1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 160549p-Cyanobenzyl alcoholHCID 27831712-Bromo-5-fluoropyridine

Product 1

HCID 592554234-(5-Fluoro-pyridin-2-yloxymethyl)-benzonitrileYield 85%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
70 °C

Procedure

To an N,N-dimethylformamide (50 mL) solution of 2-bromo-5-fluoropyridine (5 g, 28.4 mmol) and 4-(hydroxymethyl)-benzonitrile (5.67 g, 42.4 mmol) was added sodium hydride (1.7 g, 42.4 mmol, 60% in oil) at room temperature. The mixture was stirred for 3 hours at 70° C. The mixture was partitioned into ethyl acetate and water. The organic layer was separated, washed with water, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was purified by NH-silica gel column chromatography (heptane:ethyl acetate=4:1-2:1-1:1-ethyl acetate) to obtain the title compound (5.5 g, 85%).

Workup

  1. customThe mixture was partitioned into ethyl acetate and water
  2. customThe organic layer was separated
  3. washwashed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated under a reduced pressure
  7. customthe residue was purified by NH-silica gel column chromatography (heptane:ethyl acetate=4:1-2:1-1:1-ethyl acetate)

Sources & evidence

ORD record
ord-28d016bbd83b43dc9566ad0cfa207ec7
Source dataset
uspto-grants-2012_04
Patent number
US08158657B2

Reaction notes

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