Dichloromethane → HCID 10083945, compound

Participants

Reaction Conditions

Reaction Steps

Under an argon gas flow, 24 g (0.083 mol) of 2,8-dimethoxychrysene and 2 L of methylene chloride were charged into a 3 L glass flask equipped with a condenser, and cooled to −60° C. Successively, 4.1 g (0.17 mol) of boron tribromide was slowly dropped into the flask, and then the contents of the flask were stirred at room temperature for 18 h. After completion of the reaction, 1 L of water was added to the flask to separate an organic layer from the reaction solution. The resultant crude crystal was short-passed through silica gel (using THF (tetrahydrofuran) as a developing solvent). The obtained product was concentrated under reduced pressure, and the resultant crude product (25 g) was directly used in the subsequent reaction.

Provenance & Evidence