[4 + 2] Annulation of Donor–Acceptor Cyclopropanes with Acetylenes Using 1,2-Zwitterionic Reactivity
作者:Roman A. Novikov、Anna V. Tarasova、Dmitry A. Denisov、Denis D. Borisov、Victor A. Korolev、Vladimir P. Timofeev、Yury V. Tomilov
DOI:10.1021/acs.joc.7b00209
日期:2017.3.3
of donor–acceptor cyclopropanes with acetylenes under the effect of anhydrous GaCl3 using 1,2-zwitterion reactivity was elaborated. The reaction opens access to substituteddihydronaphthalenes, naphthalenes, and other fused carbocycles. The direction of the reaction can be efficiently controlled by temperature.
Fe‐Catalyzed Intramolecular Cross‐Dehydrogenative Arylation (CDA), Efficient Synthesis of 1‐Arylnaphthalenes and 4‐Arylcoumarins
作者:Haiyan Diao、Changcheng Wang、Zhen Zhang、Zhangjie Shi、Feng Liu
DOI:10.1002/hlca.202100056
日期:2021.7
Direct cross-dehydrogenative coupling of different inert C−H bonds is the most straightforward and environmentally benign method to construct C−C bonds. In this paper, we developed an iron-catalyzed intramolecular cross-dehydrogenative arylation (CDA) between benzylic C(sp3)H bond and aromaticC(sp2)H bond. From the readily available linear substrates, 1-arylnaphthalenes and 4-arylcoumarins can be