4-Fluorothiophenol → HCID 23462885, compound

Participants

Reaction Steps

To a solution of 1.0 g. (0.0078 mole) of p-fluorothiophenol in 200 ml. of methanol was added portionwise 2 g. (0.0073 mole) of 3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7,8-dione hydrobromide (prepared as in Example 2) and the resulting mixture was stirred at room temperature under argon for 1 hour. The methanol was distilled from the reaction mixture in vacuo and the residue was partitioned between ether and water. The aqueous layer was extracted with ether and then made basic with ammonium hydroxide solution. The precipitate was filtered and the dried filtrate was chromatographed on silica using methanol/chloroform. The material eluted from the column was slurried with ether and filtered. Distillation of the ether gave 7,8-dihydroxy-6-(p-fluorophenylthio)-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine, m.p. 164°-166° C.

Provenance & Evidence