7-[4-(dimethylamino)phenyl]-4-methyl-1,4-dihydro-2H-cyclopenta[b]indol-3-one 在
potassium tert-butylate 作用下,
以
四氢呋喃 、
乙二醇二甲醚 为溶剂,
生成 7-[4-(dimethylamino)phenyl]-4-methyl-2-(4-methyl-5-oxo-2,5-dihydro-furan-2-yloxymethylene)-1,4-dihydro-2H-cyclopenta[b]indol-3-one