2-(2-甲酰基-6-甲氧基苯氧基)链烷酸的珀金环化的新过程。2-烷基-7-甲氧基-5-硝基苯并[ b ]呋喃的合成
摘要:
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。
2-(2-甲酰基-6-甲氧基苯氧基)链烷酸的珀金环化的新过程。2-烷基-7-甲氧基-5-硝基苯并[ b ]呋喃的合成
摘要:
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。
Simple Synthesis of 7‐Amino‐4,5‐dihydrobenzo[<i>f</i>][1,4]oxazepin‐3‐ones
作者:Halina Kwiecień、Monika Szychowska
DOI:10.1080/00397910701557614
日期:2007.10.1
Abstract A simple method for the synthesis of 7‐amino‐4,5‐dihydro‐benzo[f][1,4]oxazepin‐3‐ones from 5‐nitrobenzaldehydes and 2‐haloesters was described. The three‐step procedure involves the synthesis of methyl 2‐(2‐formyl‐4‐nitrophenoxy)alkanoates, followed by reaction with hydrazine hydrate and reductive cyclization of the formed aldazines. 2‐Hydroxyethyl derivatives of the title amines were prepared