Pyridine-phosphinimine ligand-accelerated Cu(<scp>i</scp>)-catalyzed azide–alkyne cycloaddition for preparation of 1-(pyridin-2-yl)-1,2,3-triazole derivatives
5-a]pyridines and alkynes for the first time. By optimizing the reaction conditions, an efficient catalytic system (CuCl/2-PyCH2N[double bond, length as m-dash]P(t)Bu3) was developed to give 1-(pyridin-2-yl)-1,2,3-triazole derivatives in moderate to excellent yields (46-98%).
Thermally stable pseudo-third-generation Grubbs ruthenium catalysts with pyridine–phosphinimine ligand
作者:Hao Zhang、Yuan Yao、Ranfeng Sun、Chen Sun、Fang Liu、Youran Liu、Mei Guo、Sunan Wang、Kaiyuan You
DOI:10.1016/j.catcom.2014.01.033
日期:2014.4
various phosphine ligands. Reaction of 1a or 2a with RuCl2(CHPh)(Py)2(H2IMes) (Py = pyridine) afforded the ruthenium alkylidene complex RuCl2(CHPh)(PyCH2(NPR3))(H2IMes) (R = Ph(1), Cy(2)). Both catalysts showed good thermal stability and latent behavior toward RCM and ROMP reactions.