Ionic iron(iii) complexes of bis(phenol)-functionalized imidazolium cations: synthesis, structures and catalysis for aryl Grignard cross-coupling of alkyl halides
作者:Hai-ning Deng、Ya-lin Xing、Cong-liang Xia、Hong-mei Sun、Qi Shen、Yong Zhang
DOI:10.1039/c2dt30931a
日期:——
catalytic study on the cross-coupling reactions of aryl Grignard reagents with primary and secondary alkyl halides bearing β-hydrogens, revealed that all of the ionic iron(III) complexes exhibited good to excellent catalytic activity. Complexes 5, 6 and 8 exhibited optimal activity, whereas 7, 9 and 10 showed only moderate activity. Furthermore, by simply decanting the cross-coupling product in the ether
一系列双(酚) -功能化咪唑鎓盐,1,3-双(4,6-二叔-R的1 -2-羟基苄基)-2-R 2 -4,5-二-R 3 -咪唑氯化物ħ 3大号ñ氯(R 1 =吨卜,R 2 = R 3 = H,H 3大号1氯,1 ; R 1 = CH 3,R 2 = R 3 = H,H 3大号2氯,2 ; R 1 =吨卜,R 2 = H,R 3 =氯,H 3大号3氯,3 ; [R 1 =吨卜,R 2 = CH 3,R 3 = H,H 3大号4氯,4),被用来产生一系列新的离子铁(的III)配合物[H 3大号Ñ ] [FEX 4 ] (ñ = 1,X =氯,5 ; ñ = 2,X =氯,6 ; ñ = 3,X =氯,7 ; ñ = 4,X =氯,8 ; ñ = 1,X = Br的,9 ;Ñ = 3,X = Br的,10)。所有复合物是由拉曼光谱和电喷雾质谱表征。也使用了元素分析和X射线晶体学。所有配合物是非吸