A facile synthesis of naturally occurring binaphthoquinones: efficient oxidative dimerization of 4-alkoxy-1-naphthols using silver(II) oxide–40% nitric acid
作者:Yasuhiro Tanoue、Kazunori Sakata、Mamoru Hashimoto、Shin-ich Morishita、Moritsugu Hamada、Norihisa Kai、Takeshi Nagai
DOI:10.1016/s0040-4020(01)01130-9
日期:2002.1
Oxidation of 4-alkoxy-1-naphthols with AgO–40% HNO3 occurred along with a dimerization to give the corresponding bi-1,4-naphthoquinones. The oxidative dimerization required one hydroxyl group and took place at its ortho position. This reaction was applicable to syntheses of naturally occurring binaphthoquinones, bivitamin K3 and 3,3′-bijuglone.
用AgO–40%HNO 3氧化4-烷氧基-1-萘并进行二聚反应得到相应的bi-1,4-萘醌。氧化二聚反应需要一个羟基并发生在其邻位。该反应适用于天然存在的联萘醌,联维生素K 3和3,3'-联juglone的合成。