reported 8-phenylphenalenone from the roots of Eichhornia crassipes (water hyacinth), was synthesized starting from 2-methoxynaphthalene in 11 steps and with an overall yield of 2%. A cascade Friedel–Crafts/Michael annulation reaction between acryloyl chloride and 2-methoxynaphthalene afforded 9-methoxyperinaphthanone that, after transformation to 9-methoxy-2-(4-methoxyphenyl)-1H-phenalen-1-one by means
2-羟基-8-(
4-羟基苯基)-1 H-苯并-1-酮(1)是最早从凤眼莲(
水葫芦)的根中报告的8-苯基苯并酮,是由2-甲氧基
萘在11中合成的。步骤,总收率为2%。
丙烯酰氯与2-甲氧基
萘之间的级联Friedel-Crafts / Michael环合反应提供了9-甲氧基过
萘醌,然后通过标准铃木将其转化为9-甲氧基-2-(4-
甲氧基苯基)-1H-苯并-1-酮-Miyaura方法,经过还原羰基转座,得到8-(4-
甲氧基苯基)
萘甲酮。后者的脱氢,环氧化和脱甲基得到1。