Synthesis of 1,2,3,4‐tetrahydrobenzofuro[3,2‐d]pyrimidines via [4 + 2] annulation reaction of 1,3,5‐triazinanes and aurone‐derived α,β‐unsaturated imines

Bin Cheng,Xinping Zhang,Shengxian Zhai,Yixuan He,Qingqing Tao,Hui Li,Jian Wei,Haiyan Sun,Taimin Wang,Hongbin Zhai

Advanced Synthesis & Catalysis（2020）

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摘要

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.

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关键词

[4+2] annulation,1,3,5-triazinanes,α,β-unsaturated imines,1,2,3,4-tetrahydrobenzofuro[3,2-d]pyrimidines.

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