A New<i>N</i>-Trityl-Substituted Aminopyridinato Titanium Catalyst for Hydroamination and Hydroaminoalkylation Reactions - Unexpected Intramolecular C-H Bond Activation
作者:Lars H. Lühning、Christian Brahms、Jelte P. Nimoth、Marc Schmidtmann、Sven Doye
DOI:10.1002/zaac.201500542
日期:2015.10
idine is used for the synthesis of a mono(2,6-diaminopyridinato) titanium complex that undergoes unexpected intramolecular C–H bond activation to give access to an unusual 1-titanaisoindoline derivative. Both titanium complexes do not show high catalytic activity for hydroaminoalkylation reactions of alkenes but exceptional results are obtained in the field of alkene, alkyne, and allene hydroamination
空间要求高的 2,6-双(三苯甲基氨基)吡啶用于合成单(2,6-二氨基吡啶)钛络合物,该络合物经历了意想不到的分子内 C-H 键活化,从而获得了一种不寻常的 1-钛异二氢吲哚衍生物。两种钛配合物对烯烃的加氢氨基烷基化反应均不表现出高催化活性,但在烯烃、炔烃和丙二烯加氢胺化领域取得了优异的结果,包括分子内烯烃加氢胺化的室温活性,分子间炔烃和丙二烯加氢胺化的优异区域选择性以及在伯氨基烯烃的环化反应中加氢氨基化的选择性高于加氢氨基烷基化。