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Prepared according to Method B of the General Procedures for Preparation of 5-(S)-(N-Acylaminomethyl)-3-[4′-(substituted)thio-3′-fluorophenyl]oxazoli-dine-2-ones from 5-(S)-acetamidomethyl-3-[4′-(triphenylmethyl)thio-3′-fluorophenyl]oxazolidine-2-one with 2-chloroethyl methyl ether (0.036 g, 0.38 mmol) in N-methylpyrrolidine-2-one (1 mL). The synthesis was performed at r.t. for 2 h. The crude product was purified by TLC (eluent: 10% methanol in dichloromethane). Yield 0.034 g (52%). MS (m/z): 343 [M+H]+. 1H NMR.

1. customPrepared
2. customThe crude product was purified by TLC (eluent: 10% methanol in dichloromethane)