反应详情

A solution of 370 mg (1.11 mmol) of 4-[2-(4-nitro-phenyl)-ethanesulfonyl]-morpholine (as prepared in the previous step) in MeOH (20 mL) was treated with 10% Pd/C (Degussa type E101-NE/W, Aldrich, 50% by weight water) and H2 (1 atm) at RT for 3 h. The mixture was filtered through Celite, the filter cake was washed with MeOH, and solvents were evaporated in vacuo. Silica gel chromatography of the residue on a 50-g Varian MegaBond Elut SPE column with 50-70% EtOAc-hexane afforded 103 mg (34%) of the title compound as an off-white solid: Mass spectrum (ESI, m/z): Calcd. for C12H18N2O3S, 271.1 (M+H). found 270.9.

1. filtrationThe mixture was filtered through Celite
2. washthe filter cake was washed with MeOH, and solvents
3. customwere evaporated in vacuo