Electrochemical Desulfurizative Amination of Heteroaromatic Thiols by Iodine Catalysis
作者:Tingting Ran、Wei Jiang、Xin Fu、Jinguo Long、Jie Liu
DOI:10.1002/cctc.202301750
日期:——
We report that anodic oxidation of 2-iodobenzoic acid enables a hypervalent iodine (III) electrocatalysis of desulfurizative amination of heteroaromatic thiols. This protocol features broad substrate scope and wide functional group tolerance, delivering the target N-heterocyclic amines with good to excellent yields.
Conformation and<i>ortho</i>steric effects in a series of 2-(pyrazol-1-yl)quinolines
作者:Shiv P. Singh、Dalip Kumar、Devinder Kumar、Ana Martínez、José Elguero
DOI:10.1002/jhet.5570330219
日期:1996.3
The 1H and 13C chemical shifts were discussed taking into account the preferred conformation about the C-2-N-1′ bond as calculated by the AM1 Hamiltonian. It appears that 5-ethyl and 5-isopropyl substituted derivatives present short C-H-N-1 interactions. Ortho stericeffects appear to be responsible for these conformations.