The synthesis and characterization of silicon Lewis acid complexes that incorporate highly electron-deficient cyclopentadienes is reported. Several pentacarboxycyclopentadienyl and monocarboxytetracyanocyclopentadienyl complexes were prepared. A comparison of their reactivities for catalysis of the allylation of an electron-deficient benzaldehyde was established. The use of a monocarboxytetracyano
报道了掺入高度电子缺陷的
环戊二烯的
硅路易斯酸配合物的合成和表征。制备了几种五羧基
环戊二烯基和单羧基四
氰基环戊二烯基配合物。建立了它们对缺电子的
苯甲醛的烯丙基化催化反应的反应性的比较。已证明使用单羧基四
氰基甲
硅烷基供体可通过阴离子提取途径有效地使各种亲电试剂进行烯丙基化或芳基化。