Rare-earth metal-mediated addition/cyclization of the 2-cyanobenzoamino anion

摘要

Reaction of two equiv of [2-NCC_6H_4HNLi(THF)] _n (1) with Cp_2LnCl(THF) yields the heterobimetallic complexes Cp_2Ln[κ~3-(4-NH(C_8N _2H_4)(2-NHC_6H_4)]Li(THF)_3 (Cp = C_5H_5; Ln = Er (2), Y(3)), indicating an organolanthanide-mediated nucleophilic addition/cyclization of the 2-cyanobenzoamino anion to construct the 4-iminoquinazolinate dianionic ligand.