Methyl iodide → (2S,4R)-4-methanesulfonyloxy-1-methyl-2-(2-oxoimidazolidin-1-yl)carbonylpyrrolidine

Participants

Reaction Conditions

Reaction Steps

To a solution of (2S,4R)-4-methanesulfonyloxy-2-(2-oxoimidazolidin-1-yl)carbonylpyrrolidine (14.9 g) in a mixture of methanol (150 ml) and tetrahydrofuran (150 ml) were added triethylamine (32.5 ml) and methyl iodide (11.4 ml) and the mixture was stirred at 40° C. for 2 hours. The reaction mixture was evaporated in vacuo. The resulting residue was chromatographed on silica gel (600 g) eluting with a mixture of chloroform and methanol (9:1 V/V). The fractions containing the desired compound were collected and evaporated in vacuo to give a residue. The residue was washed with dichloromethane (100 ml). The resulting precipitates were collected and dried in vacuo to give (2S,4R)-4-methanesulfonyloxy-1-methyl-2-(2-oxoimidazolidin-1-yl)carbonylpyrrolidine (2.30 g).

Provenance & Evidence