作者:Cédric Maurin、Fabrice Bailly、Philippe Cotelle
DOI:10.1016/j.tet.2005.02.091
日期:2005.7
were treated with concentrated hydrochloric acid in 1,4-dioxane to give methoxylated 2-phenylnaphthalenes or 1,2,9,10-tetrahydro-1,9-epoxydibenzo[a,e]cyclooctenes. Yields in 2-phenylnaphthalenes were quite good and 1,2,9,10-tetrahydro-1,9-epoxydibenzo[a,e]cyclooctenes could be easily isolated. 2-Phenylnaphthalenes were obtained by a tandem aldol condensation-intramolecular Friedel–Crafts cyclisation
在浓盐酸中在1,4-二恶烷中处理甲氧基化的苯乙醛,得到甲氧基化的2-苯基萘或1,2,9,10-四氢-1,9-环氧二苯并[ a,e ]环辛烯。2-苯基萘的收率相当好,并且可以容易地分离出1,2,9,10-四氢-1,9-环氧二苯并[ a,e ]环辛烯。通过串联的羟醛缩合-分子内Friedel-Crafts环化和1,2,9,10-四氢-1,9-环氧二苯并[ a,e ]环辛烯通过O缩合然后再进行两次分子内的Friedel-化,获得2-苯基萘。工艺品烷基化。