The first synthetic application of a vinylic oxirane as a heteroatom-containing five-atom component in transition-metal-catalyzed cycloaddition reactions is reported. A new, efficient, diastereoselective tandem intramolecular hetero-[5+2] cycloaddition/Claisen rearrangement of vinylic oxirane-alkyne substrates that uses a rhodium NHC complex and provides strategically novel, atom-economic, regiospecific
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乙烯基环氧乙烷作为含杂原子的五原子组分在过渡
金属催化的环加成反应中的首次合成应用。一种新的、有效的、非对映选择性串联分子内杂-[5+2] 环加成/克莱森重排
乙烯基环氧乙烷-炔底物,它使用
铑 NHC 复合物并提供战略性的新颖、原子经济、区域特异性和非对映选择性访问 [3.1.0 ] 双环产品已开发完成。