作者:Y. Oikawa、O. Yonemitsu
DOI:10.1016/s0040-4020(01)97425-3
日期:1974.1
8-tetrahydronaphthalene (2) through an intramolecular nucleophilic substitution of a sulfonium ion intermediate (20b), while a β -ketosulfoxide having naphthalene nucleus (3) cyclized to a tetrahydrophenanthrene 4 via a Pummerer rearrangement product 23. Treatment of 1 with p-toluenesulfonic acid gave a mixture of 2,3,6-trisubstituted naphthalenes (7–10), whose composition was dependent on the reaction conditions
与三氯乙酸或三氟乙酸一起加热时,2,4-二甲氧基苯乙基甲基亚磺酰基甲基酮(1)通过分子内环化为2,3-二甲氧基-5-甲硫基-6-氧代5、6、7、8-四氢萘(2)。 a离子中间体(20b)的亲核取代,而具有萘核(3)的β-酮亚砜通过Pummerer重排产物23环化成四氢菲4 。用对甲苯磺酸处理1得到2,3,6-三取代萘的混合物(7-10),其组成取决于反应条件。芳构化通过 2进行。