<i>N</i>-Lithio-<i>N,N′,N″,N</i>″-tetramethyldiethylenetriamine and<i>N</i>′-Lithio-<i>N,N,N″,N</i>″-tetramethyldiethylenetriamine; Oxidative Coupling of Aminomethyllithium Derivatives
作者:Hendrikus Luitjes、Marius Schakel、Gerhard W. Klumpp
DOI:10.1080/00397919408019050
日期:1994.8
N-lithio-N,N',N'',N''-tetramethyldiethylenetriamine (I-Li) is formed from 2,5,8,11-tetramethyl-2,5,8,11-tetraazadodecane (III) or from 2,5,8,11,14,17-hexamethyl-2,5,8,11,14,17-hexaazaoctadecane (IV) with n-BuLi or sec-BuLi, respectively, its isomer N'-lithio-N,N,N'',N'',-tetramethyldiethylene-triamine (II-Li) from tris(2-dimethylaminoethyl)amine (V) with n-BuLi. IV results from treatment of N-lithiomethyl-N,N',N'',N''-tetramethyldiethylenetriamine (PMDTA-Li) with 1,2-dibromoethane.