Phosphorus oxychloride → HCID 58563844, compound

Participants

Reaction Steps

To a cold (5° C.) solution of piperidine-1,3-dicarboxylic acid 1-tert-butyl ester (1 g; 4.362 mmol) and 3-amino-5-t-butylisoxazole (589 mg; 4.2 mmol) in anhydrous pyridine (12 mL) is added phosphorus oxychloride (0.393 mL; 4.362 mmol). The reaction mixture is stirred at room temperature for 30 minutes. The mixture is quenched with saturated NH4Cl aqueous solution and extracted with ethyl acetate 3 times. The organics are combined and washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. Purification by flash chromatography on silica using methanol/methylene chloride provides the title compound, m/z 352 [M+H+].

Provenance & Evidence