An efficient, oxidant and photocatalyst-free approach for the synthesis of polycyclic-fused isoindolinone derivatives is reported via annulation of 3,4-diphenyl-3-pyrrolin-2-ones along with release of the hydrogen gas under an argon atmosphere in EtOH by irradiation with a 500 W mercury lamp at room temperature. The described approach is atom-economic and environmentally friendly and tolerates various electron-donating and electron-withdrawing groups. In addition, selected annulation products, dibenzo[e,g]isoindole-1-ones, were successfully oxidized into dibenzo[e,g]isoindole-1,3(2H)- diones in DMSO in the presence of CH₃ONa at room temperature.

通过3,4-二苯基-3-吡咯啉-2-酮的环化反应，以及在氩气中在氩气氛下通过氢气释放氢气，报道了一种高效，无氧化剂，无光催化剂的合成多环稠合异吲哚啉酮衍生物的方法。在室温下用500 W汞灯照射。所描述的方法是原子经济的和环境友好的，并且可以耐受各种给电子和吸电子基团。另外，在CH ₃ ONa存在下，于DMSO中，将选定的环化产物二苯并[ e，g ]异吲哚-1-酮成功氧化为二苯并[ e，g ]异吲哚-1,3（2 H）-二酮。室内温度。