Triacetoxyperiodinane → HCID 86709989, compound

Participants

Reaction Steps

(R)-(1-(4-Fluorophenyl)-6-(m-tolylsulfonyl)-4,4a,5,6,7,8-hexahydro-1H-pyrazolo[3,4-g]isoquinolin-4a-yl)methanol (3.5 g, 7.72 mmol) was dissolved in dichloromethane (80 mL) and Dess-Martin Periodinane (5.24 g, 12.35 mmol) was added. The reaction was stirred at room temperature for 1 hour. A saturated solution of sodium hydrogen carbonate (aqueous, 50 ml) was added and the mixture was stirred for 10 minutes. The phases were separated and solvent removed to give a pale yellow solid. The crude product was purified by chromatography on silica gel (gradient: 0-80% ethyl acetate in isohexane) to afford (R)-1-(4-fluorophenyl)-6-(m-tolylsulfonyl)-4,4a,5,6,7,8-hexahydro-1H-pyrazolo[3,4-g]isoquinoline-4a-carbaldehyde (2.9 g) as a very pale yellow solid. LCMS (Method F, ES-API): RT 2.46 min, m+H=452.

Provenance & Evidence