Sodium Bicarbonate → 3[2-(1(S)-Hydroxy-3-cyanopropyl)benzothiazol-6-yl]-5(R)-methoxymethyl-2-oxazolidinone

Participants

Reaction Steps

73 g of the 3-[2-(1-hydroxy-3-hydroxyiminopropyl)benzothiazol-6-yl]-5-methoxymethyl-2 -oxazolidinone obtained in the Example 8 was dissolved in 800 ml of tetrahydrofuran. 90 g of trifluoroacetylimidazole was added dropwise to the solution under cooling with ice and the mixture was stirred at room temperature for 4 h. The reaction liquid was poured into an aqueous sodium hydrogencarbonate solution. After extraction with ethyl acetate followed by washing with an aqueous common salt solution, drying over magnesium sulfate and concentration under reduced pressure, the obtained solid was recrystallized from acetone/water to give 51 g of the titled compound.

Provenance & Evidence