Disiloxane → HCID 12992812, compound

Participants

Reaction Steps

To a solution of the silyl ether, 3-Cyclopropyloxy-4-difluoromethoxy-1-(triisopropylsilyloxy)methylbenzene, from Step 4 (70 g, 179 mmol) in TBF (700 mL) at room temperature was added TBAF (215 mL of a 1M solution in THF, 215 mmol) and the resulting mixture was stirred for 17 h. The mixture was partitioned between 25% aq. NH4OAc (500 mL) and ethyl acetate (1 L) and the aqueous layer was extracted with ethyl acetate (2×). The combined organics were washed with brine, dried (Na2SO4) and concentrated. Flash chromatography of the residue (silica gel; hexane/ethyl acetate 3:2 to 1:1) provided the 3-Cyclopropyloxy-4-difluoromethoxybenzyl alcohol compound (41 g).

Provenance & Evidence