A new course of the Perkin cyclization of 2-(2-formyl-6-methoxyphenoxy)alkanoic acids. Synthesis of 2-alkyl-7-methoxy-5-nitrobenzo[b]furans
作者:Monika Kowalewska、Halina Kwiecień
DOI:10.1016/j.tet.2008.03.067
日期:2008.5
4]-dioxepin-5-yl acetate and 2-alkyl-5-hydroxy-9-methoxy-7-nitro-5H-benzo[e][1,4]-dioxepin-3-one were formed as a result of the cyclization of 2-(2-formyl-6-methoxy-4-nitrophenoxy)alkanoic acids under classical Perkin reaction conditions. The products were characterized by spectroscopic methods and the mechanism of the cyclization is discussed.
2-烷基-7-甲氧基-5-硝基苯并[ b ]呋喃,2-烷基-9-甲氧基-7-硝基-3-氧代-2,3-二氢-5 H-苯并[ e ] [1,4]环化的结果是形成乙酸-二氧杂戊基-5-基酯和2-烷基-5-羟基-9-甲氧基-7-硝基-5 H-苯并[ e ] [1,4]-二氧杂-3-基经典珀金反应条件下制备2-(2-甲酰基-6-甲氧基-4-硝基苯氧基)链烷酸 用光谱方法对产物进行了表征,并讨论了环化的机理。