Sodium methanethiolate → HCID 18914198, compound

Participants

Reaction Steps

A stirred solution of 1-t-butyloxycarbonyl-2-(2-methylsulfonyloxyethyl)-4-(2-methylphenyl)piperazine from Step 1 above (0.39 g; 0.98 mmol) and sodium thiomethoxide (0.21 g; 3.0 mmol) in dry THF (15 mL) was heated to reflux for 18 h. The solvent was evaporated under reduced pressure and the residue was partitioned between EtOAc and water. The organic phase was separated and washed with saturated aqueous NaHCO3 and brine. The organic layer was dried (MgSO4), filtered, and the solvent was evaporated under reduced pressure. The residue was purified by pressurized silica gel column chromatography using 1:4 EtOAc:hexanes as eluant. The title compound was isolated as a gum (1H-NMR: consistent with structure; TLC: silica gel, 1:4 EtOAc:hexanes: single component, Rf =0.50; FABMS: M+H @ m/e=351; HPLC: >99%, retention time 12.0 min).

Provenance & Evidence