Insertion of isocyanides into actinoid–nitrogen bonds of biscyclopentadienyluranium mono- and bis-(dialkylamides)
作者:A. Dormond、A. Aaliti、C. Moïse
DOI:10.1039/c39850001231
日期:——
Isocyanides react readily with Ucp2(NEt2)2(cp = cyclopentadienyl) and U(C5Me5)2(NEt2)Cl giving iminoalkylamido insertion compounds: starting from Ucp2(NEt2)2 and an excess of isocyanide or form the monoinserted compound, a second insertion occurs, affording the highly symmetrical bis(iminoalkylamido) compounds; 1H n.m.r. data indicate the importance of a ‘carbenoid’ resonance hybrid and nitrogen lone-pair
异氰酸酯容易与Ucp 2(NEt 2)2(cp =环戊二烯基)和U(C 5 Me 5)2(NEt 2)Cl反应,生成亚氨基烷基酰胺基插入化合物:从Ucp 2(NEt 2)2和过量的异氰化物或形成单插入的化合物后,进行第二次插入,得到高度对称的双(亚氨基烷基酰胺基)化合物。1 H nmr数据表明“类胡萝卜素”共振杂化和向“类胡萝卜素”碳原子提供氮孤对捐赠的重要性。