Dimethyl Sulfoxide → HCID 67823058, compound

Participants

Reaction Conditions

Reaction Steps

DMSO (30 ml) was added to sodium hydroxide (1 g, 24 mmole, 60% oil suspension was washed with hexane and dried under reduced pressure) under an atmosphere of argon, followed heating at 80° C. for 1 hour with stirring. After cooling, 3-carboxypropyltriphenyl phosphonium bromide (4.6 g, 11 mmole) was added to the solution, followed by stirring at room temperature. After stirring for 10 minutes, a THF solution (5 ml) of 3-(3,5,6-trimethyl-1,4-dimethoxyphenyl)butanal (2.7 g, 11 mmole) was added dropwise to the mixed solution. The reaction solution was stirred at room temperature for 2 hours, and water (50 ml) was added to it. The organic layer was washed with toluene (100 ml), and the water layer was adjusted to pH 4 with 2N hydrochloric acid, followed by extraction with IPE. The organic layer was washed with water, dried and concentrated under reduced pressure, and the crude product was purified by silica gel column chromatography (eluting solution: IPE) to give 7-(1,4-dimethoxy-3,5,6-trimethylphenyl)-4-octenoic acid (2.2 g, 68%).

Provenance & Evidence