Oxidation of C–H bonds to CO bonds by O2 only or N-oxides and DMSO: synthesis of Δ1-bipyrrolinones and pyrrolino[3,2-b]pyrrolinones from 2,6-diazasemibullvalenes
Efficient Synthesis of Aza-triquinacene Derivatives via Cycloaddition of 2,6-Diazasemibullvalenes with Nitroso Compounds
作者:Ming Zhan、Shaoguang Zhang、Zhe Huang、Zhenfeng Xi
DOI:10.1002/asia.201403030
日期:2015.4
The reaction between 2,6‐diazasemibullvalenes and nitroso compounds was investigated. Aza‐triquinacene derivatives of interesting structural and synthetic chemistry were generated highly selectively in good to excellent isolated yields. This reaction, which was rarely found between common aziridine derivatives and nitroso compounds, could be attributed to the rigid polycyclic ring system and the substitution
2,6-Diazasemibullvalenes: Synthesis, Structural Characterization, Reaction Chemistry, and Theoretical Analysis
作者:Shaoguang Zhang、Junnian Wei、Ming Zhan、Qian Luo、Chao Wang、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1021/ja305581f
日期:2012.7.25
rearrangement is "frozen" in the solid state, as shown by solid-state NMR measurements and X-ray single-crystal structural analysis. Insertion of unsaturated compounds or a low-valent metal center into the NSBV C-N bond gave diverse and interesting ring-expansion products. Theoreticalanalysis showed that the localized structure is predominant and that the homoaromatic delocalized structure exists as a minor
Oxidation of C–H bonds to CO bonds by O2 only or N-oxides and DMSO: synthesis of Δ1-bipyrrolinones and pyrrolino[3,2-b]pyrrolinones from 2,6-diazasemibullvalenes
作者:Shaoguang Zhang、Ming Zhan、Qian Luo、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1039/c3cc43061h
日期:——
2,6-Diazasemibullvalenes (NSBVs) readily reacted with oxygen under mild conditions, affording Î1-bipyrrolinones via CâN bond cleavage and CâH bond oxidation. Pyrrolino[3,2-b]pyrrolinone derivatives were efficiently generated when NSBVs were treated with N-oxides in the presence of Lewis acids. Î1-Bipyrrolinones thus obtained could be readily transformed into other heterocycles.