Dimethyl Sulfoxide → HCID 178520943, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of oxalyl chloride (6.2 mL, 87.4 mmol) in anhydrous CH2Cl2 (300 mL) was added dropwise DMSO (12.5 mL, 0.17 mol) at −78° C. under N2. After the mixture was stirred at −78° C. for 30 min., a solution of (trans-4-(trifluoromethyl)cyclohexyl)methanol (5.3 g, 29.1 mmol) in CH2Cl2 (40 mL) was added dropwise while keeping the internal temperature below −65° C. After being stirred for 30 min., a solution of Et3N (40.5 mL, 0.29 mol) in CH2Cl2 (60 mL) was added dropwise slowly, keeping the internal temperature below −65° C. The reaction mixture was stirred at −78° C. for 1 h, and warmed to rt overnight. The mixture was washed with water (3×300 mL) and brine (300 mL), dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by column chromatography on silica (eluting with 15% EtOAc in petroleum ether) to give trans-4-(trifluoromethyl)cyclohexane-1-carbaldehyde (4.6 g, 87%) as a yellow oil.

Provenance & Evidence