Chiral Cationic CpxRu(II) Complexes for Enantioselective Yne-Enone Cyclizations
收藏Figshare2016-02-12 更新2026-04-29 收录
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https://figshare.com/articles/dataset/Chiral_Cationic_Cp_sup_x_sup_Ru_II_Complexes_for_Enantioselective_Yne_Enone_Cyclizations/2124844
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资源简介：
The cyclopentadienyl (Cp) group is a ligand of great importance for many transition-metal complexes used in catalysis. Cationic CpRuII complexes with three free coordination sites are highly versatile catalysts for many atom-economic transformations. We report the synthesis of a family of CpxRuII complexes with chiral Cp ligands keeping the maximum number of available coordination sites. The cationic members are efficient and selective catalysts for yne-enone cyclizations via formal hetero-Diels–Alder reactions. The transformation proceeds in <1 h at −20 °C and provides pyrans in up to 99:1 er. Unsaturated ester or Weinreb-amide substrates directly yield the iridoid skeleton.
创建时间：
2016-02-12
