Asymmetric synthesis catalyzed by chiral ferrocenylphosphine transition metal complexes. 10 gold(i)-catalyzed asymmetric aldol reaction of isocyanoacetate
作者:Tamio Hayashi、Masaya Sawamura、Yoshihiko Ito
DOI:10.1016/s0040-4020(01)88870-0
日期:1992.1
Optically active ferrocenylbisphosphine ligands containing 2-(dialkylamino)ethylamino group on the ferrocenylmethyl position have been prepared and used for the gold(I)-catalyzed asymmetric aldol reaction of isocyanoacetate with aldehydes. Six-membered ring amines, such as morpholino or piperidino group, at the terminal of the side chain were most stereoselective to give optically active trans-4-
制备了在二茂铁基甲基位置上含有2-(二烷基氨基)乙基氨基的旋光二茂铁基双膦配体,并将其用于金(I)催化的异氰基乙酸酯与醛的不对称醛醇缩合反应。侧链末端的六元环胺(例如吗啉代或哌啶子基)具有最高的立体选择性,可生成具有高对映体的光学活性反式-4-甲氧羰基-5-烷基-2-恶唑啉(ee最高可达97%) -和非对映选择性的定量收率。