DDQ-Mediated Tandem Synthesis of Functionalized Pyranocoumarins from 4-Hydroxycoumarins and 1,3-Diarylallylic Compounds
作者:Xufeng Lin、Zhenxing He、Yuanxun Zhu、Yanguang Wang
DOI:10.3987/com-10-11906
日期:——
simple and efficient DDQ-mediated oxidative cross-coupling between 4-hydroxycoumarin and 1,3-diarylallylic compounds was developed. The reaction furnished functionalized pyranocoumarins in a single step without using any metal catalyst. The tandem process involves an intermolecular C-Cbondformation and an intramolecular C-Obondformation through double oxidative C-H activation.
开发了一种简单有效的 DDQ 介导的 4-羟基香豆素和 1,3-二芳基烯丙基化合物之间的氧化交叉偶联。该反应在一个步骤中提供了官能化的吡喃香豆素,而不使用任何金属催化剂。串联过程涉及通过双氧化 CH 活化形成分子间 CC 键和形成分子内 CO 键。
Soluble Glass, an Efficient Promoter for the Cascade Addition-Cyclization Reaction of 4-Hydroxycoumarins to Chalcone Derivatives
(2021). Soluble Glass, an Efficient Promoter for the Cascade Addition-Cyclization Reaction of 4-Hydroxycoumarins to Chalcone Derivatives. Organic Preparations and Procedures International: Vol. 53, No. 1, pp. 52-58.
Regioselective Access to Structurally Diverse Coumarin Analogues through Iron-Catalysed Annulation Reactions
作者:Qiao Ren、Jie Kang、Muyao Li、Lujiang Yuan、Ruoyun Chen、Lei Wang
DOI:10.1002/ejoc.201700999
日期:2017.10.10
A highly efficient iron-catalysed propargylation/alkyne oxacyclization/isomerization strategy is described. Biologically active furo[3,2-c]coumarins and pyrano[3,2-c]coumarins are expeditiously assembled with high regioselectivities.
描述了一种高效的铁催化的炔丙基化/炔基羰基化/异构化策略。具有高区域选择性的生物活性呋喃[3,2- c ]香豆素和吡喃并[3,2- c ]香豆素被迅速组装。
Bi(OTf)3-catalyzed solvent-free synthesis of pyrano[3,2-c]coumarins through a tandem addition/annulation reaction between chalcones and 4-hydroxycoumarins
作者:Mukut Gohain、Johannes H. van Tonder、Barend C.B. Bezuidenhoudt
DOI:10.1016/j.tetlet.2013.05.008
日期:2013.7
A Bi(OTf)3-catalyzedtandemaddition/annulation reaction is described in order to synthesize pyrano[3,2-c]coumarins under solvent-free conditions. Substituted/unsubstituted chalcones were conveniently condensed with various 4-hydroxycoumarins by means of this environmentally benign method which produces water as the only side product.
描述了Bi(OTf)3催化的串联加成/环合反应,以便在无溶剂条件下合成吡喃并[3,2- c ]香豆素。借助于这种环境友好的方法,取代的/未取代的查耳酮方便地与各种4-羟基香豆素缩合,该方法产生水作为唯一的副产物。
Gold(III)-Catalyzed Tandem Conjugate Addition/Annulation of 4-Hydroxycoumarins with α,β-Unsaturated Ketones
efficient and selective approach for the synthesis of functionalized pyranocoumarins has been developed via a gold(III)-catalyzed tandem conjugate addition/annulation reaction of 4-hydroxycoumarins with α,β-unsaturatedketones.