%0 Generic
%A Hu, Zhi-Long
%A Qian, Wen-Jian
%A Wang, Sheng
%A Wang, Shaozhong
%A Yao, Zhu-Jun
%D 2009
%T Transformation of Reactive Isochromenylium Intermediates to Stable Salts and Their Cascade Reactions with Olefins
%U https://acs.figshare.com/articles/dataset/Transformation_of_Reactive_Isochromenylium_Intermediates_to_Stable_Salts_and_Their_Cascade_Reactions_with_Olefins/2821291
%R 10.1021/ol9019524.s002
%2 https://acs.figshare.com/ndownloader/files/4518946
%K cascade reactions
%K isochromenylium tetrafluoroborate 1
%K Cascade Reactions
%K isochromenylium tetrafluoroborates
%K intramolecular cascade annulation
%K reactive isochromenylium intermediates
%K polycyclic frameworks 4
%K Stable Salts
%K ICTB
%K Reactive Isochromenylium Intermediates
%K Olefins Transformation
%X Transformation of reactive isochromenylium intermediates to the corresponding storable and stable reagents has been achieved, and a number of isochromenylium tetrafluoroborates (ICTBs, 1) have been conveniently prepared and characterized. Direct metal-free treatment of isochromenylium tetrafluoroborate 1a with olefins afforded a variety of polycyclic frameworks 4 via mild cascade reactions. Starting from the prefunctionalized o-alkynylbenzaldehydes, a one-pot metal-free procedure of intramolecular cascade annulation to 2,3-dihydrophenanthren-4(1H)-one derivatives was also developed.
%I ACS Publications