Hydrochloric Acid → HCID 118151892, compound

Participants

Reaction Steps

To a stirred solution of ((4R,5R)-5-(2-nitrophenyl)-2,2-dimethyl-1,3-dioxolan-4-yl)methyl sulfamate (Example 77, 5.2 g, 16 mmol) in EtOAc (50 mL) was added 3N HCl (24.6 mL, 80.0 mmol) at room temperature. The mixture was stirred for 5 h. The resulting mixture was diluted with EtOAc, washed with sat. NaHCO3, dried over MgSO4, filtered, and concentrated under reduced pressure. The crude product stirred in THF (35 mL) was added CDI (2.91 g, 17.9 mmol) at room temperature. The mixture was stirred for 1 h. The resulting mixture was diluted with EtOAc, washed with water, dried over MgSO4, filtered, and concentrated under reduced pressure. The crude product was purified by SiO2 gel column chromatography to produce the title compound (2.6 g, 60˜80%)

Provenance & Evidence