Pyridine → HCID 59472939, compound

Participants

Reaction Steps

To a suspension of 16-2 (1.2 g, 2.7 mmol) in CH2Cl2 (10 ml) was added DMAP (0.03 g, 0.03 mmol) and pyridine (0.4 ml, 5.4 mmol) followed by chloroacetic anhydride (0.5 g, 3.0 mmol). The reaction mixture was stirred at room temperature for 2 h before adding additional chloroacetic anhydride (0.2 g, 0.9 mmol). After stirring for an additional 10 min the solvent was removed in vacuo. The residue was partitioned between saturated aqueous NaHCO3 and EtOAc (3×30 ml). The combined organic layers were washed with water, brine and dried (Na2SO4/MgSO4). Removal of the solvent afforded the desired product 26-1 as a red powder. MS calculated: 500.2. Found 500.1

Provenance & Evidence