Tetrahydrofuran → HCID 68682176, compound

Participants

Reaction Conditions

Reaction Steps

Under a nitrogen atmosphere at −78° C., n-butyllithium (1.56 M hexane solution, 4.84 ml) was added to a tetrahydrofuran (20 ml) solution of 2-(3,5-difluorophenyl)-2-ethyl-1,3-dioxolane (1.01 g). The reaction liquid was stirred at −78° C. for 15 minutes, then a tetrahydrofuran (10 ml) solution of 1,2-dibromo-1,1,2,2-tetrachloroethane (3.07 g) was added. After stirred at room temperature for 45 minutes, water was added to it, and extracted with chloroform. The organic layer was dried with anhydrous sodium sulfate, then the solvent was evaporated off, and the residue was purified by silica gel column chromatography (hexane/ethyl acetate=50/1) to obtain the entitled compound (1.20 g) as a pale yellow oil.

Provenance & Evidence