New Approach to Substrate Activation or How Heterobimetallic Complexes {[(<i>p</i>-<i>t</i>Bu-C<sub>6</sub>H<sub>4</sub>)<sub>2</sub>CH]<sub>3</sub>M}K (M = Ca and Yb) Make Intermolecular Olefin Hydroamination and NH<sub>3</sub> Cascade Hydroamination/Hydroaminomethylation Feasible
作者:Alexander N. Selikhov、Anton V. Cherkasov、Yulia V. Nelyubina、Alexander A. Trifonov
DOI:10.1021/acscatal.3c03471
日期:2023.10.6
unprecedented catalyticactivity and 100% regioselectivity in intermolecular olefin hydroamination allowing to involve into the reaction a broad scope of substrates including ethylene (1 atm), internal C═C bonds, and a variety of primary and secondary amines. Complex 1Ca allowed for the cascade NH3 alkylation with styrene and hydroaminoalkylation involving one of styryl fragments to afford N,N-diphenethyl-1
在这里,我们报道了两种热稳定的无碱异双金属二苯甲基配合物[( p - t BuC 6 H 4 ) 2 CH] 3 M}K (M = Yb(II) 和 Ca(II)) 的合成和结构,其特征在于接触离子对的结构,其中阴离子部分由三个二苯甲基配体 η 3组成,与三个 η 6封装的 M(II) 离子和 K +阳离子配位-配位苯环。该配合物在分子间烯烃加氢胺化中表现出前所未有的催化活性和 100% 区域选择性,允许广泛的底物参与反应,包括乙烯 (1 atm)、内部 C=C 键以及各种伯胺和仲胺。络合物1Ca允许与苯乙烯进行级联NH 3烷基化和涉及苯乙烯基片段之一的氢氨基烷基化,得到N , N-二苯乙基-1,4-二苯基丁-2-胺。
Akkerman,O.S., Recueil des Travaux Chimiques des Pays-Bas, 1967, vol. 86, p. 1018 - 1024
作者:Akkerman,O.S.
DOI:——
日期:——
Voelter, Wolfgang; Mueller, Juergen, Liebigs Annalen der Chemie, 1983, # 2, p. 248 - 260