N,N,C,O-tetradentate manner. Further studies indicated that these tetradentate rare-earth metal complexes could initiate the Oppenauer oxidation of secondary alcohols into the corresponding ketones in high yields. In the case of primary alcohols, a tandem Oppenauer oxidation and cross-aldol condensation occurred unexpectedly. Various α-mono-substituted benzylidene acetones, α,α′-bis-substituted benzylidene
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 (