Syntheses of 5-hydroxy-2-(phenyl or styryl)chromones and of some halo derivatives
作者:Diana C. G. A. Pinto、Artur M. S. Silva、José A. S. Cavaleiro
DOI:10.1002/jhet.5570330655
日期:1996.11
One-pot syntheses of 5-hydroxy-2-(phenyl or styryl)chromones and the corresponding 6- and 8-monoiodo- and 6,8-diiodochromones have been developed. The procedures involve oxidative cyclization of 2′-benzyloxy-6′-hydroxychalcones and 2′-benzyloxy-6′-hydroxy-2-cinnamylideneacetophenones and electrophilic substitution processes on the chromone moieties; such procedures were also applied to the syntheses
一锅合成5-羟基-2-(苯基或
苯乙烯基)
色酮以及相应的6-和8-单
碘-和6,8-二
碘代
色酮。该方法包括2'-苄氧基-6'-羟基
查耳酮和2'-苄氧基-6'-羟基-2-肉桂基
苯乙酮的氧化环化以及
色酮部分上的亲电取代过程。这种方法也适用于6,8-二
溴色酮衍
生物的合成。