Triethylamine → 1-(4-Cyano-3-fluorobenzyl)-5-imidazolecarboxaldehyde

HRID 2187864Notes

Reaction equation

HRID 2187864 reaction equation
[C:1]([C:3]1[CH:16]=[CH:15][C:6]([CH2:7][N:8]2[C:12]([CH2:13][OH:14])=[CH:11][N:10]=[CH:9]2)=[CH:5][C:4]=1[F:17])#[N:2].C(N(CC)CC)C.CCOC(C)=O>CS(C)=O>[C:1]([C:3]1[CH:16]=[CH:15][C:6]([CH2:7][N:8]2[C:12]([CH:13]=[O:14])=[CH:11][N:10]=[CH:9]2)=[CH:5][C:4]=1[F:17])#[N:2]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 8857Ethyl AcetateHCID 185360621-(4-Cyano-3-fluorobenzyl)-5-(hydroxymethyl)imidazole

Product 1

HCID 114247081-(4-Cyano-3-fluorobenzyl)-5-imidazolecarboxaldehyde

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

To a solution of the alcohol from Step F (2.31 g, 10.0 mmol) in 20 mL of DMSO at 0° C. was added triethylamine (5.6 mL, 40 mmol), then SO3-pyridine complex (3.89 g, 25 mmol). After 30 minutes, the reaction was poured into EtOAc, washed with water and brine, dried (Na2SO4), filtered, and concentrated in vacuo to provide the aldehyde as a pale yellow powder which was sufficiently pure for use in the next step without further purification.

Workup

  1. washwashed with water and brine
  2. dry with materialdried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-43f583cff5694b42b3ec5e5b3460e247
Source dataset
uspto-grants-2002_06
Patent number
US06410534B1

Reaction notes

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