By the treatment of the p-quinol acetate (IIa-c) with trifluoroacetic acid, (±)-domesticine (VIa), (±)-thaliporphine (VIb), and (±)-1-hydroxy-2, 9, 10, 11-tetramethoxyaporphine (VIc) were given in good yields, respectively.
                                    用
三氟乙酸处理对
醌醇乙酸酯(IIa-c),可分别得到(±)-多美汀(VIa)、(±)-
邻苯二酚(VIb)和(±)-1-羟基-2,9,10,11-四甲氧基卟吩(VIc),收率良好。