p-Toluenesulfonic acid monohydrate → HCID 12115482, compound

Participants

Reaction Steps

After 2.7 g (13.1 mols) of the 2-(1-hydroxy-1,4-dimethylpentyl)aniline obtained in Example 3-1 was diluted with toluene, p-toluenesulfonic acid monohydrate (225 mg) was added thereto, and the resulting mixture was dehydrated with refluxing over a period of 3 hours by the use of a Dean-Stark trap. The reaction mixture was diluted with ethyl acetate and then washed with an aqueous sodium hydrogencarbonate solution and saturated aqueous sodium chloride solution. The organic layer was dried over magnesium sulfate and then concentrated under reduced pressure. The resulting residue was dissolved in ethanol, followed by adding thereto 5% palladium-carbon (100 mg), and the resulting mixture was stirred under a hydrogen atmosphere at room temperature for 12 hours. The reaction mixture was filtered through Celite and the residue was concentrated under reduced pressure to obtain 2.2 g of 2-(1,4-dimethylpentyl)aniline.

Provenance & Evidence