Methanesulfonamide → (R)-1-(3-nitrophenyl)-2-hydroxypropan-1-one

Participants

Reaction Steps

Compound 10g was synthesized by a procedure similar to that described for (R)-10a using (Z)-tert-butyl(1-(3-nitrophenyl)prop-1-enyloxy)dimethylsilane, (9g, 8.0 g, 0.027 mol), AD-mix-β (38 g), and CH3SO2NH2 (2.64 g, 0.0277 mol) in tert-butyl alcohol-water (110 mL:110 mL). The reaction was quenched with sodium sulfite (27.4 g). After purification by column chromatography on silica gel, 4.0 g (75%) of the desired product was isolated: [α]20D +63.8° (c 1.3, CHCl3); 1H NMR (CDCl3) δ 8.80-8.74 (m, 1H), 8.52-8.44 (m, 1H), 8.31-8.24 (m, 1H), 7.83-7.68 (m, 1H), 5.27-5.13 (m, 1H), 3.59 (d, 1H, J=6.5 Hz), 1.49 (d, 3H, J=7.08 Hz); 13C NMR (CDCl3) δ 200.4, 148.6, 134.9, 134.1, 130.2, 128.1, 121.6, 69.8, 21.9; C9H9NO4.

Provenance & Evidence