Synthesis of dibenzo[e,g]isoindol-1-ones via photoinduced intramolecular annulation of 3,4-diphenyl-1H-pyrrol-2(5H)-ones
作者:Yang Kang、Yun He、Jingzhi Sui、Tao Wang、Yong Liang、Zunting Zhang
DOI:10.1016/j.tet.2021.131981
日期:2021.3
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
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。