源自氮杂,的非交替有机基配体(1,3-二氯-2-氮杂烯基)首次引入到铋和锑中心。通过二氟化氙将a烯基双muthanes转化为五配位二氟化物可促进promote核的π极化,这可通过溶液中的颜色变化以及13 C NMR光谱的化学位移的变化进行检测。在锑同类物中观察到类似的趋势。(1,3-二氯-2-氮杂烯基)二苯基二氟化铋(20b)揭示了通过五元环与七元环的相互作用在氮杂烯基之间发生了分子间π-π堆积。这可能反映了二氟化物的极化度更高的a烯基,从而加强了堆叠相互作用。
The First Generation of Azulenyl-Lithium and -Magnesium: A Novel, Versatile Method of Introducing a Substituent at the 2-Position of an Azulene Skeleton
The First Preparation of Azulenylzinc Reagents and Their Use in Negishi Cross-Coupling
作者:Aleksei Bredihhin、Julia Dubovik
DOI:10.1055/s-0034-1380745
日期:——
The preparation of azulenylzinc reagents from the corresponding iodoazulenes is described. The synthetic utility of the obtained reagents is demonstrated by introducing functionalized aryl and sensitive heterocyclic substituents into the azulene moiety through Negishi cross-coupling.