51148-43-7Relevant academic research and scientific papers
Tetraorganogallate complexes in organic chemistry: Michael addition to α, β-unsaturated compounds
Han, Ying,Huang, Yao-Zeng,Fang, Lei,Tao, Wen-Tian
, p. 867 - 876 (1999)
Tetraorganogallate complexes, prepared in situ by addition of an organolithium reagent to a triorganogallium, reacted smoothly with α,β- unsaturated compounds to give Michael addition products in high yields, and mixed gallates display very high chemoselectivity in the transfer of one of their ligands.
Rhodium-grafted hydrotalcite catalyst for heterogeneous 1,4-addition reaction of organoboron reagents to electron deficient olefins
Motokura, Ken,Hashimoto, Norifumi,Hara, Takayoshi,Mitsudome, Takato,Mizugaki, Tomoo,Jitsukawa, Koichiro,Kaneda, Kiyotomi
experimental part, p. 2416 - 2422 (2011/10/13)
A rhodium-grafted hydrotalcite (Rh/HT) was prepared by the treatment of a Mg-Al mixed hydroxide (hydrotalcite, HT) with an aqueous RhCl 3·nH2O solution. The formation of the Rh III species on the HT surface was confirmed by X-ray absorption fine structure spectroscopy. The Rh/HT catalyst was demonstrated to effectively promote the 1,4-addition reaction of organoboron reagents to electron-deficient olefins in both organic and aqueous solvents. The strong surface basicity of HT facilitates the formation of a Rh-OH species, which possesses high nucleophilicity, leading to an efficient transmetalation with organoboron reagents. This catalyst system is also applicable in the one-pot three-component synthesis of 2-cyano-3,3-diphenyl propionate due to the bifunctionality of the Rh/HT surface.
