tert-butyl (4S,5S)-2,2,4-trimethyl-5-[[(4S,5S)-2,2,4-trimethyl-3-[(2-methylpropan-2-yl)oxycarbonyl]-1,3-oxazolidin-5-yl]methylsulfonylmethyl]-1,3-oxazolidine-3-carboxylate 在
aluminum oxide 、
氢氧化钾 、
二溴二氟甲烷 作用下,
以
叔丁醇 为溶剂,
反应 4.0h,
以21 mg的产率得到tert-butyl (4S,5R)-2,2,4-trimethyl-5-[(E)-2-[(4S,5R)-2,2,4-trimethyl-3-[(2-methylpropan-2-yl)oxycarbonyl]-1,3-oxazolidin-5-yl]ethenyl]-1,3-oxazolidine-3-carboxylate