Selective synthesis of 3-formylbenzofuran and 3-acylbenzofuran using a chalcone rearrangement strategy
作者:Akira Nakamura、Akira Imamiya、Yuichiro Ikegami、Fei Rao、Harumi Yuguchi、Yasuyoshi Miki、Tomohiro Maegawa
DOI:10.1039/d2ra06080a
日期:——
selective synthesis of two benzofuran isomers, by rearranging and subsequently transforming 2-hydroxychalcones. Depending on the reaction conditions, synthesis of 3-formylbenzofurans, unconventional products, and 3-acylbenzofurans was achieved through cyclized 2,3-dihydrobenzofurans obtained from the rearranged products. The facile synthesis of 3-formylbenzofurans facilitated synthesis of the natural product
我们开发了一种通过重排并随后转化 2-羟基查尔酮来高度选择性合成两种苯并呋喃异构体的方法。根据反应条件,通过重排产物环化2,3-二氢苯并呋喃,合成3-甲酰基苯并呋喃、非常规产物和3-酰基苯并呋喃。 3-甲酰基苯并呋喃的简便合成促进了从相应的查耳酮合成天然产物葛根呋喃。