[3-(4-methyl-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-7-yl)-2-oxo-oxazolidin-5-ylmethyl]-carbamic acid tert-butyl ester 在
劳森试剂 作用下,
以
1,4-二氧六环 为溶剂,
以69%的产率得到(5S)-[3-(4-methyl-3-thioxo-3,4-dihydro-2H-benzo[1,4]oxazin-7-yl)-2-oxo-oxazolidin-5-ylmethyl]-carbamic acid tert-butyl ester