Аннотация:
The interaction of guanidine with 1-(3’-hydroxy-3’-methylbutynyl)-9,10-anthraquinone in refluxing butan-1-ol leads to the formation of the cascade transformations products: addition/elimination/cyclization/dehydrocyclization – anthra[9,1-de][1,3]diazocine-2,9-dione, chromeno[4,5,6-cde]benzo[h]quinoline-1,6-dione and 12-(9,10-anthraquinon-1-yl)-2H-phenanthro[2,1,10-def]chromene-1,6-dione systems.