Dimethylformamide → 2-[2-(2,5-Dimethylphenoxymethyl)-alpha-methoxybenzyl]pyridine

HRID 2268753Notes

Reaction equation

HRID 2268753 reaction equation
[CH3:1][C:2]1[CH:23]=[CH:22][C:21]([CH3:24])=[CH:20][C:3]=1[O:4][CH2:5][C:6]1[CH:19]=[CH:18][CH:17]=[CH:16][C:7]=1[CH:8]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][N:11]=1)[OH:9].[CH3:25]N(C)C=O.CI.[H-].[Na+]>CCOCC>[CH3:1][C:2]1[CH:23]=[CH:22][C:21]([CH3:24])=[CH:20][C:3]=1[O:4][CH2:5][C:6]1[CH:19]=[CH:18][CH:17]=[CH:16][C:7]=1[CH:8]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][N:11]=1)[O:9][CH3:25]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 155451342-[2-(2,5-Dimethylphenoxymethyl)-alpha-hydroxybenzyl]pyridine

Product 1

HCID 155451352-[2-(2,5-Dimethylphenoxymethyl)-alpha-methoxybenzyl]pyridineYield 92.3%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent

Procedure

To a mixture of 0.42 g (1.3 mmol) of 2-[2-(2,5-dimethylphenoxymethyl)-α-hydroxybenzyl]pyridine, 4 ml of N,N-dimethylformamide and 0.12 ml (2 mmol) of methyl iodide was added 0.07 g (1.7 mmol) of 60% sodium hydride under ice-cooling and stirred at the same temperature for 3 hours. After completion of the reaction, 100 ml of ether was added and washed twice with 80 ml of brine. The ether layer was dried over anhydrous magnesium and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (ethyl acetate/n-hexane) to give 2-[2-(2,5-dimethylphenoxymethyl)-α-methoxybenzyl]pyridine (0.40 g, 92.3%) as colorless oil.

Workup

  1. temperaturecooling
  2. additionwas added
  3. washwashed twice with 80 ml of brine
  4. dry with materialThe ether layer was dried over anhydrous magnesium
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by column chromatography on silica gel (ethyl acetate/n-hexane)

Sources & evidence

ORD record
ord-1509afb2056647439fc8c4d2697a2385
Source dataset
uspto-grants-2001_12
Patent number
US06329371B1

Reaction notes

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