Cesium carbonate → Benzyl 4-(2,3-dihydroxypropylthio)-2-methylbutan-2-ylcarbamate

Participants

Reaction Conditions

Reaction Steps

To a solution of benzyl 4-mercapto-2-methylbutan-2-ylcarbamate (17.4 g, 68.7 mmol) in N,N-dimethylformamide (200 ml) was added glycidol (5.0 ml, 75 mmol) and cesium carbonate (1.55 g, 4.76 mmol). The suspension was heated to 70° C. for 17 hours, then cooled to room temperature and concentrated in vacuo. The residue was purified by flash chromatography (20% to 100% ethyl acetate in hexanes) to afford the title compound as a clear oil (13.48 g, 41.17 mmol, 60%). 1H NMR (400 MHz, CDCl3) δ 1.30 (m, 6H), 2.0-2.1 (m, 2H), 2.24 (m, 1H), 2.49-2.62 (m, 3H), 2.71 (m, 1H), 3.5 (m, 1H), 3.7 (m, 2H), 4.75 (s, 1H), 5.06 (s, 2H), 7.3-7.4 (m, 5H); LRMS (ESI/APCI) m/z 328 [M+H]+, 350 [M+Na]+.

Provenance & Evidence