“On‐Water” Palladium‐Catalyzed Tandem Cyclization Reaction for the Synthesis of Biologically Relevant 4‐Arylquinazolines
作者:Shuo Yuan、Bin Yu、Hong‐Min Liu
DOI:10.1002/chem.201903464
日期:2019.10.11
The quinazoline scaffold is prevalent in pharmaceutically relevant molecules that show diverse biological activities. Herein, we report an efficient "on-water" palladium-catalyzed tandem cyclization reaction from commercially available arylboronic acids and benzonitriles that enable the rapid access to 4-arylquinazoline scaffolds in good to excellent yields (45 examples, up to 98 % yield). This protocol
喹唑啉支架普遍存在于具有各种生物学活性的药学相关分子中。在本文中,我们报道了由市售的芳基硼酸和苄腈进行的有效的“水上”钯催化的串联环化反应,该反应能够以良好至优异的产率(45个实例,高达98%的产率)快速获得4-芳基喹唑啉骨架。该协议显示出良好的官能团耐受性和广泛的底物范围。该反应也以克为单位进行,并成功地应用于高效和选择性PI3Kδ抑制剂N11的合成,显示了该方案的实用性和合成实用性。在该反应中,通过同时形成一个CC键和一个CN键有效地构建了喹唑啉支架。总的来说,