Pd-catalyzed imine-directed intramolecular C N bond formation through C(sp3) H activation: An efficient approach to multisubstituted pyrroles
作者:Ting Yu、Qiang Zhu、Shuang Luo
DOI:10.1016/j.tetlet.2020.151887
日期:2020.5
An atom-economic approach to synthesize 1,2,4-trisubstituted pyrroles through palladium-catalyzed imine-directed intramolecularC(sp3)H amination reaction has been developed. The imine group acts as a directing group as well as an intramolecular nucleophile for the first time in intramolecular CN bonds formation reactions.
The potassium hydride mediated trimerization of imines
作者:Kathrin Kutlescha、Gopaladasu T. Venkanna、Rhett Kempe
DOI:10.1039/c0cc04565a
日期:——
A novelreaction, the potassiumhydride mediated synthesis of fulvenes, is described. The synthesis utilizes N-aryl imines as an inexpensive starting material affording novel substituted aminofulvenes. It is proposed that the presence of the metalated enamine as well as the imine (ratio 2 : 1) leads to the formation of an initial dimerization and a transient trimerization product, which cyclizes, giving