Synthesis and Structural Elucidation of Diversely Functionalized 5,10-Diaza[5]Helicenes
作者:Deepali Waghray、Jing Zhang、Jeroen Jacobs、Wienand Nulens、Nikola Basarić、Luc Van Meervelt、Wim Dehaen
DOI:10.1021/jo301814m
日期:2012.11.16
building block via Wittig reaction followed by photochemical electrocyclization. The helicene skeleton was substituted by a variety of O-, S-, N-, and C-centered nucleophiles using nucleophilic aromatic substitution reactions and palladium-catalyzed reactions like Suzuki coupling and Buchwald–Hartwig aminations. We have determined, using X-ray single-crystal diffraction, the crystal structures of the chloro-
已经从6,9-二氯-5,10-二氮杂[5]螺旋烯开始合成了各种功能化的二氮杂[5]螺旋烯,其是由易于获得的喹啉结构单元通过Wittig反应,随后进行光化学电环化而制备的。使用亲核芳族取代反应和钯催化的反应(例如Suzuki偶联和Buchwald-Hartwig胺化反应),将螺旋烯骨架替换为各种O-,S-,N-和C-中心的亲核体。我们已经使用X射线单晶衍射确定了氯和甲氧基取代的二氮杂[5]螺旋烯的晶体结构。已经显示了基于通过用手性胺取代二氯衍生物的非对映异构体分离的拆分策略。