Methyl iodide → HCID 178459470, compound

Participants

Reaction Steps

A mixture of allyl (4R,5S,6S)-3-[(2S,4S)-1-allyloxycarbonyl-2-(imidazol-1-yl)methylpyrrolidin-4-yl]thio-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (15.4 g), methyl iodide (18.6 ml) and acetone (80 ml) was stirred at ambient temperature for 5 hours. The reaction mixture was evaporated in vacuo. The resulting residue was chromatographed on silica gel (75 g) eluting with a mixture of dichloromethane and methanol (9:1, V/V). The fractions containing the desired compound were collected and evaporated in vacuo to give allyl (4R,5S,6S)-3-[(2S,4S)-1-allyloxycarbonyl-2-(3-methyl-1-imidazolio)methylpyrrolidin-4-yl]thio-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate iodide (17.72 g).

Provenance & Evidence