A simple and efficient procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives through one-pot condensation of 2-naphthol with aryl aldehydes in the presence of niobium pentachloride is described. The reactions were carried out using 25 mole % of NbCl5, at ambient temperature, and in acceptable reaction times, affording excellent yields of the products.
本文描述了一种简单高效的方法,通过在铌五氯化物存在下,将2-萘酚与芳基醛一锅法缩合合成14-芳基-14H-二苯并[a,j]黄芩烷衍生物。反应在常温下使用25摩尔%的NbCl5进行,反应时间合适,产率优异。