合成了一系列不对称四齿β-二酮亚胺稀土金属单烷基配合物,其催化性能得到了很好的发展。掺入吲哚的 β-二酮亚胺前配体 H 2 L ( L = MeC(NDipp)CHC(Me)NCH 2 CH 2 -3-(1-RC 8 H 4 N), R = CH 2 -(2-C 4 H 7 O), L 1 ; R = (CH 2 ) 2 OMe, L 2 ; Dipp = 2,6- i Pr 2 C 6 H 3 ) 通过芳基氨基烯酮与 1-取代的色胺反应制备产量。 用稀土金属三烷基配合物 RE(CH 2 SiMe 3 ) 3 (THF) 2处理配体生成相应的不对称N , N , C , O -四齿 β-二酮亚胺稀土金属单烷基配合物L RE(CH 2 SiMe 3 ) ( L 1 , RE = Y ( 1a ), Gd ( 1b ), Yb ( 1c ) , Lu ( 1d ); L 2 , RE = Y (
Zr(HSO<sub>4</sub>)<sub>4</sub>/SiO<sub>2</sub> as an Efficient Alternative Catalyst for the Claisen-Schmidt Condensation
作者:Bi Bi Fatemeh Mirjalilia、Abddhamid Bamoniri、Masoumeh Alipour、Mohammad Ali Karimi Zarchia
DOI:10.1515/znb-2008-1213
日期:2008.12.1
Zr(HSO4)4/SiO2 promotes the regio-, stereo- and chemoselectiveClaisen-Schmidtcondensation of aromatic aldehydes with ketones under solvent-free conditions with improved yields. The work-up of the reaction mixture is simple, and the catalyst is easily removed from the products by simple filtration.