Hydrochloric Acid → HCID 58151924, compound

Participants

Reaction Steps

4.5 g (11.6 mmol) of 6-(1-ethynylbutoxy)-7,8-difluoro-2-(4-propylcyclohexyl)-1,2,3,4-tetrahydronaphthalene are heated at 200° C. for 2 h in 45 ml of N,N-diethylaniline. After cooling, the batch is added to a mixture of 2 N hydrochloric acid and ice, and the mixture is extracted with MTBE. The organic phase is washed with 2 N hydrochloric acid and water, and the solution is dried using sodium sulfate. The residue remaining after removal of the solvent is purified by column chromatography (SiO2, n-heptane:toluene=9:1), giving 5,6-difluoro-3-propyl-8-(4-propylcyclohexyl)-7,8,9,10-tetrahydro-3H-benzo[f]chromene as a yellow solid.

Provenance & Evidence