Synthesis of 8-substituted naphtho[2,1-<i>b</i>]thiophenes with cationic side chains at position 4
作者:Srihari Kusuma、W. David Wilson、David W. Boykin
DOI:10.1002/jhet.5570220518
日期:1985.9
A series of five 8-substituted α-[bis(2-hydroxyethyi)aminoethyl]naphtho[2,1-b]thiophenes 7 and a series of seven N-(3-dimethylaminopropyl)-8-substituted naphtho[2,1-b]thiophene-4-carboxamides 8 have been synthesized. The naphtho[2,1-b]thiophene-4-carboxylic acids 4 were prepared by photooxidative cyclization of α-(2-thienyi)-β-arylacrylic acids 3. The carboxylic acids 4 were converted by a conventional
一系列的五个8-取代的α-[双(2-(羟乙基)氨基乙基]萘[7,1- b ]噻吩7和一系列的七个N-(3-二甲基氨基丙基)-8-取代的萘[2,1-已经合成了b ]噻吩-4-羧酰胺8。的萘并[2,1- b ]噻吩-4-羧酸4是由α-(2-噻吩基)-β-arylacrylic酸的光氧化环化来制备3的羧酸4通过常规五步路径涉及α转换-[双(2-羟乙基)氨基甲基] -8-取代的萘-[[2,1-6]噻吩-4-甲醇]的-溴酮中间体7并通过标准的两步酰胺制备方法制备N-(3-二甲基氨基丙基)-8-取代的萘并[2,1-6]噻吩-4-羧酰胺8。