Department of Chemistry, University of Waterloo, 200 University Ave. W., Waterloo, ON, N2L3G1, Canada.
Chemistry. 2018 Nov 16;24(64):17002-17005. doi: 10.1002/chem.201804786. Epub 2018 Oct 26.
A catalytic, metal-free and chemoselective oxidative intramolecular coupling of arene and alkene C-H bonds is reported. The active hypervalent iodine (HVI) reagent, generated catalytically in situ from iodotoluene and meta-chloroperoxybenzoic acid (m-CPBA), reacts with o-vinylbiphenyls to generate polyaromatic hydrocarbons in up to 95 % yield. Experimental evidence suggests the reactions proceed though vinyliodonium and, possibly, vinylenephenonium intermediates.
报道了一种非均相催化、无金属、区域和化学选择性的芳基和烯烃 C-H 键的氧化分子内偶联反应。活性高价碘(HVI)试剂是由碘代甲苯和间氯过氧苯甲酸(m-CPBA)原位催化生成的,它与邻位乙烯基联苯反应,以高达 95%的收率生成多环芳烃。实验证据表明,反应通过乙烯碘翁和可能的乙烯苯翁中间体进行。