4-benzoyl-1-(N,N-dimethylcarbamyl)-5-phenyl-2,3-pyrroldione 在
劳森试剂 作用下,
以
5,5-dimethyl-1,3-cyclohexadiene 为溶剂,
反应 3.0h,
以36%的产率得到(3E)-4-benzoyl-3-{4-benzoyl-1-[(dimethylamino)carbonyl]-1,2-dihydro-2-oxo-5-phenyl-3H-pyrrol-3-ylidene}-2,3-dihydro-N,N-dimethyl-2-oxo-5-phenyl-1-pyrrole-1-carboxamide