在无水无氧的条件下,利用2-(二甲胺基)苄基钾盐KR或锂盐LiR (R=CH2C6H4-NMe2-o与三氯化稀土反应制得相应的均配型的三[2-(二甲胺基)苄基]稀土配合物LnR3(Ln=La, Nd, Y).配合物LnR3能够有效地催化Henry反应,反应条件温和,产率中等.
@@@@A series of homoleptic tris(o-dimethylaminobenzyl) complexes LnR3 (R=CH2C6H4-NMe2-o;Ln=La, Nd, Y) were prepared through a reaction of anhydrous LnCl3 and KR/LiR under pure argon by rigorously excluding air and moisture and using standard Schlenk techniques. Tris(o-dimethylaminobenzyl) lan-thanide complexes could catalyze the Henry reaction e?ciently under mild conditions, with moderate to high yields.