Divergent Metal-Free [4 + 2] Cascade Reaction of 1-Indanylidenemalononitrile with 3-Benzylidenebenzofuran-2(3<i>H</i>)-one: Access to Spiro-dihydrofluorene-benzofuranone and Axially Chiral Fluorenylamine-phenol Derivatives
作者:Ran Li、Lei Yao、Yan-Bo Wang、Jun-Yan Zhu、Lixiong Zhang、Ji-Ya Fu、Chuan-Bao Zhang、Lili Zhao
DOI:10.1021/acs.orglett.1c01510
日期:2021.8.6
conditions, and various spiro-dihydrofluorene-benzofuranones were produced in gratifying results, respectively. It is worth noting that both the spiro and axially chiral products can be obtained by tuning the reaction conditions. The mechanism of the transformation was also studied by quantum chemical calculations.
在温和的反应条件下,在温和的反应条件下,开发了 1-茚满基丙二腈与 3-亚苄基苯并呋喃-2(3 H )-one的高效级联反应,并分别产生了各种螺-二氢芴-苯并呋喃酮。值得注意的是,螺旋和轴向手性产物都可以通过调整反应条件来获得。还通过量子化学计算研究了转变的机制。