[3+2] Redox-Neutral Cycloaddition of Nitrocyclopropanes with Styrenes by Visible-Light Photocatalysis
作者:Chengfeng Wang、Xiang Ren、Hujun Xie、Zhan Lu
DOI:10.1002/chem.201500873
日期:2015.6.26
The first nitro‐group‐initiated redox‐neutral [3+2] cycloaddition of nitrocyclopropanes with alkenes by using visible‐light‐absorbing transition‐metal complexes was reported. High diastereoselectivities were observed for two quaternary carbon centers on the ring and validated by DFT calculations. Spiro‐ or polycyclic structures can be constructed smoothly. Cyclic γ‐amino acid derivatives and polysubstituted
Pathways in the reactions of nitronate ions with sulphonyl halides
作者:Paul E. Pigou、Charles J. M. Stirling
DOI:10.1039/p29880000725
日期:——
Primary and tertiary nitronate ions and sulphonyl bromides and iodides rapidly equilibrate with the nitrohalides and sulphinate ion. Products are determined by solvent and by the occurrence of cross-equilibrium reactions, some of which have single-electron-transfer mechanisms. The reaction of arene-sulphinate and -thiolate ions with 1,2-dibromo-2-nitro-1-phenylethane gave E-β-nitrostyrene by Z-philic