Cu2O acting as a robust catalyst in CuAAC reactions: water is the required medium
作者:Kai Wang、Xihe Bi、Shuangxi Xing、Peiqiu Liao、Zhongxue Fang、Xianyu Meng、Qian Zhang、Qun Liu、Yu Ji
DOI:10.1039/c0gc00848f
日期:——
Cu2O as the catalyst in water was found to be quite robust for the azide-alkyne cycloaddition (AAC) reaction, which was verified by a wide variety of applicable azides and alkynes. Water was proved to play an essential role because of a significant rate acceleration compared with reactions using organic solvents and conducted under neat conditions. The high catalytic performance of Cu2O/H2O system was further argued by decreasing the catalyst loading to ppm levels.
Key Non-Metal Ingredients for Cu-catalyzed “Click” Reactions in Glycerol: Nanoparticles as Efficient Forwarders
作者:Marta Rodríguez-Rodríguez、Patricia Llanes、Christian Pradel、Miquel A. Pericàs、Montserrat Gómez
DOI:10.1002/chem.201604048
日期:2016.12.12
The effect of long‐alkyl‐chain amines in CuI‐assisted azide–alkyne cycloadditions of terminal alkynes with organic azides in glycerol and other environmentally benign solvents (water, ethanol) has been examined. The presence of these additives favors the in situ formation of CuI‐based nanoparticles and results in an increase of the catalytic reactivity. In glycerol, liquid‐phase transmission electron