Methane, dichloromethoxy- → HCID 19047071, compound

Participants

Reaction Steps

To a solution of 20 g of the 7-chloro-2,3-dihydro-2,2,4,5-tetramethylbenzofuran in 200 ml of absolute dichloromethane was added 27.3 ml of titanium chloride(IV) and 18.75 ml of α,α-dichloromethyl methyl ether at 0° C. With stirring at room temperature for 45 minutes and refluxing for 15 minutes, the reaction mixture was quenched with 200 ml of ice-water and stirred for 30 minutes and the aqueous layer was extracted with dichloromethane. The combined organic extracts were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure to afford a crude product. Final purification was carried by silica-gel column chromatography to afford 14 g of 7-chloro-2,3-dihydro-2,2,4,5-tetramethylbenzofuran-6-carboxaldehyde.

Provenance & Evidence