The (±)--chromanochromanones (2) and (3), representing the basic ring system of the natural insecticide rotenone, have been synthesised by a general procedure; the key step is 4-aroylation of the 4-phenyl-sulphonyl) chromans (7; Z=SO2Ph).
代表天然
杀虫剂鱼藤酮的基本环系统的(±)-色
铬烷酮(2)和(3)已通过通用方法合成。关键步骤是4-苯基-磺酰基)苯并二氢
吡喃(4-苯甲酰基化)(7; Z = SO 2 Ph)。