Oxygen → HCID 69472649, compound

Participants

Reaction Steps

To a solution of 4-but-2-enyl-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (149 mg, 0.42 mmol, 1 equiv) in DMF (1.4 mL) and water (0.2 mL) were added palladium(II)chloride (7.4 mg, 0.042 mmol, 0.1 equiv) and copper(I) chloride (41.1 mg, 0.42 mmol, 1 equiv). The mixture was stirred at 50° C. overnight with oxygen bubbling into the mixture. The mixture was filtered and the filtrate was concentrated under high vacuum. The residue was diluted with ethyl acetate, washed with water (1×), brine (1×), dried and concentrated. The residue was purified by preparative TLC to give 4-(3-oxo-butyl)-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (110 mg, 71%).

Provenance & Evidence