Synthesis of 1,2,3,4‐Tetrahydrobenzofuro[3,2‐<i>d</i>]pyrimidines via [4+2] Annulation Reaction of 1,3,5‐Triazinanes and Aurone‐Derived α,β‐Unsaturated Imines
Bin Cheng, Xin‐Ping Zhang, Shengxian Zhai, Yixuan He, Qingqing Tao, Hui Li, Jian Wei, Haiyan Sun, Taimin Wang, Hongbin Zhai
Abstract
Abstract A [4+2] annulation reaction of 1,3,5‐triazinanes and aurone‐derived α,β‐unsaturated imines has been developed, which enables the synthesis of 1,2,3,4‐tetrahydrobenzofuro[3,2‐ d ]pyrimidines under thermal conditions in high yields. This protocol is catalyst‐free and additive‐free. magnified image
Topics & Concepts
ChemistryAnnulationCatalysisCombinatorial chemistryStereochemistryMedicinal chemistryOrganic chemistrySynthesis and Reactivity of HeterocyclesCatalytic C–H Functionalization MethodsSynthesis and Biological Evaluation