New Reactivity of Oxaziridine: Pd(II)-Catalyzed Aromatic C–H Ethoxycarbonylation via C–C Bond Cleavage
摘要:
A novel Pd(II)-catalyzed aromatic C-H ethoxycarbonylation with oxaziridine involving C-C bond cleavage is described. Various aromatic 2-phenylpyridines and related compounds as well as aryl ureas can be effectively ethoxycarbonylated. A catalytic cycle involving Pd(II) and Pd(IV) is proposed.
Formal Total Synthesis of (±)-Strictamine by [2,3]-Sigmatropic Stevens Rearrangements
作者:Ruben Eckermann、Michael Breunig、Tanja Gaich
DOI:10.1002/chem.201605361
日期:2017.3.17
processes that mostly trigger rearrangements of the methanoquinolizidine motif. The family of the akuammiline alkaloids is best represented by strictamine. It bears the least functionalized carbon skeleton of all family members without lacking the signature structural motifs. Herein, we report the formal synthesis of strictamine through a Stevens [2,3]‐sigmatropic rearrangement as a key step and the synthetic
Optically active trifluoromethylcarbinols as chiral solvating agents for asymmetric transformations at a ring-nitrogen atom
作者:Arrigo Forni、Irene Moretti、Alexandr V. Prosyanik、Giovanni Torre
DOI:10.1039/c39810000588
日期:——
Asymmetric chlorination of the nitrogen atom of aziridines can be carried out using achiral t-butyl hypochlorite in the presence of opticallyactivetrifluoromethylcarbinols; the absolute stereochemistry of the reaction may be correlated with the chirality of the alcohol used.