Hydrogen peroxide/MoO3, as an efficient and clean oxidizing system was used to afford diasteroselective oxidative cyclization of bisnaphthols to spirans in ethanol at 60 °C with high yields. Bisnaphthols were prepared by the reaction of a series of aldehydes and 2-naphthol in the presence of a catalytic amount of H3[P(Mo3O10)4].nH2O (HPa) in refluxing dichloromethane.
过氧化氢/ MoO 3作为一种高效,清洁的氧化系统,用于在60°C的
乙醇中以高产率将双
萘酚非对映选择性氧化成环
烷烃。在催化量的H 3 [P(Mo 3 O 10)4 ] .nH 2 O(HPa)的存在下,在回流的
二氯甲烷中,一系列醛与
2-萘酚反应制备联
萘酚。