Palladium-Catalyzed Cross-Coupling Reactions of 1,2-Diiodoalkenes with Terminal Alkynes: Selective Synthesis of Unsymmetrical Buta-1,3-diynes and 2-Ethynylbenzofurans
for the preparation of unsymmetricalbuta-1,3-diynes and 2-ethynylbenzofurans. In the presence of palladium(II)acetate and copper(I) iodide, unsymmetrical buta-1,3-diynes wereselectively obtained in moderate to good yields. Moreover, 2-ethynylbenzofuranswere obtained in one pot from the reaction of 2-ethynylphenol with( E)-1,2-diiodoalkenes, palladium(II)acetate, and copper(I) iodide by simple heating
Synthesis of Triazole Derivatives of Levoglucosenone As Promising Anticancer Agents: Effective Exploration of the Chemical Space through <i>retro</i>-aza-Michael//aza-Michael Isomerizations
作者:Yi-hsuan Tsai、Carla M. Borini Etichetti、Carolina Di Benedetto、Javier E. Girardini、Felipe Terra Martins、Rolando A. Spanevello、Alejandra G. Suárez、Ariel M. Sarotti
DOI:10.1021/acs.joc.7b03141
日期:2018.4.6
The design and synthesis of biomass-derived triazoles and the in vitroevaluation as potential anticancer agents are described. The discovery of base-catalyzed retro-aza-Michael//aza-Michael isomerizations allowed the exploration of the chemicalspace by affording novel types of triazoles, difficult to obtain otherwise. Following this strategy, 2,4-disubstituted 1,2,3-triazoles could be efficiently