3,7-Bis(4-bromophenyl)-4a,8a-ditert-butyl-3a,7a-dihydro-[1,2]oxazolo[5,4-f][1,2]benzoxazole-4,8-dione 在
sodium hydroxide 作用下,
反应 24.0h,
以75%的产率得到3-(4-Bromo-phenyl)-6-[3-(4-bromo-phenyl)-5-tert-butyl-4,5-dihydro-isoxazol-4-yl]-6a-tert-butyl-6-hydroxy-6,6a-dihydro-3aH-furo[3,4-d]isoxazol-4-one