Chiral Osmium(II)/Salox Species Enabled Enantioselective γ‐C(sp<sup>3</sup>)−H Amidation: Integrated Experimental and Computational Validation For the Ligand Design and Reaction Development
作者:Weijie Chen、Huiying Xu、Fu‐Xiaomin Liu、Kaifeng Chen、Zhi Zhou、Wei Yi
DOI:10.1002/anie.202401498
日期:——
Based on a computer-aided ligand design, the first chiral Os(II)/Salox catalytic system is realized to address the appealing yet challenging asymmetric γ-C(sp3)−H amidation of dioxazolones with precise site-/enantioselectivity control and diverse functionality. The catalytic energy profile and the chiral induction mode of the developed chiral Os(II)/Salox system are also further clarified by integrated
Unexpected behaviour of tosylated and acetylated imidazolinium salts
作者:Nicole Clemens、Oksana Sereda、Ren? Wilhelm
DOI:10.1039/b601104g
日期:——
Tosylated and acetylated imidazolinium salts revealed an unexpected reactivity when treated with methyl iodide or benzyl bromide. Moreover an unprecedented acid-catalysed rearrangement for an acetylated imidazolinium salt was observed during an anion metathesis.