HCID 12992812, compound → 3-Cyclopropoxy-4-difluoromethoxy-benzaldehyde

Participants

Reaction Steps

To a solution of the 3-Cyclopropyloxy-4-difluoromethoxybenzyl alcohol from Step 5 (41 g, 179 mmol) in dichloromethane (1.2 L) was added MnO2 (220 g, 2.15 mol) in four portions over 2 days. When TLC indicated the reaction was complete, the mixture was diluted with ethyl acetate and filtered through Celite® (available from Aldrich Chemical Company, Inc., Milwaukee, Wis.), washing extensively with a succession of ethyl acetate, dichloromethane, EtOH and toluene. The combined filtrates were concentrated. Flash chromatography of the residue (silica gel; hexane/ethyl acetate 3:1 to 7:3) provided the 3-Cyclopropyloxy-4-difluoromethoxybenzaldehyde compound (31 g).

Provenance & Evidence