Phosphoric Acid → HCID 88028514, compound

Participants

Reaction Steps

Part A: To a solution of Example 252 (0.5 g, 0.9 mmol) in ethyl acetate (5 mL) was added phosphoric acid (37 mg, 0.32 mmol) and solution was stirred at ambient temperature for 2 hours. Evaporation of the solvent and recrystallization from hot ethanol at zero degrees Celsius gave the title compound as a white solid (0.312 g, 59%). Analytical calculation for C22H25N2O7SF3.0.33H3PO4.0.5H2O: C, 47.18; H, 4.86; N, 5.00. Found: C, 47.15; H, 4.73; N, 4.90.

Provenance & Evidence