Hydrogenation of Diels-Alder Adducts 2a-c and 7a of 2,4-dihydropyrrolo[3,4-b]indoles1a-c and DMAD or benzyne induced retro-Diels-Alder reactions to give indole 5 and pyrroles 6a-c or isoindole 9.
                                    2,4-二氢
吡咯并[3,4- b ]
吲哚1a-c和
DMAD或苯炔引起的狄尔斯-阿尔德反应的狄尔斯-阿尔德加合物2a-c和7a氢化,得到
吲哚5和
吡咯6a-c或异
吲哚9。