Reversible 1,1-hydroaluminations and C-H activation in reactions of a cyclic (alkyl)(amino) carbene with alane

被引：15
|
作者：
Cao, Levy L. [1 ]
Stephan, Douglas W. [1 ]
机构：
[1] Univ Toronto, Dept Chem, 80 St George St, Toronto, ON M5S 3H6, Canada
来源：
CHEMICAL COMMUNICATIONS | 2018年 / 54卷 / 60期
基金：
加拿大自然科学与工程研究理事会;
关键词：
OXIDATIVE ADDITION; ALUMINUM-HYDRIDE; COMPLEXES; BOND; CARBON; ADDUCT; AL; REACTIVITY; GALLIUM; METALS;
D O I：
10.1039/c8cc05013a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Varying the reaction ratio of cyclic (alkyl)(amino) carbene (cAAC(Et)) with AlH3NEtMe2 leads to the isolation of (cAAC(Et)H)AlH(2)NEtMe(2)1 and (cAAC(Et)H)(2)Al(-H)(2)AlH(2)NEtMe(2)2 and the first example of a monomeric dialkyl-aluminum hydride (cAAC(Et)H)(2)AlH 3. VT and H-1-H-1 EXSY NMR experiments of 3 demonstrated the isomerization of the diastereomers of 3via the first instance of reversible hydride migration between the Al and the C center. In addition, heating solutions of 3 at 100 degrees C affords (cAAC(Et)H)Al(CHC(Et)(2)CH2C(Me)(2)NC6H3(iPr)C(Me)CH2) 4 with loss of H-2.
引用
收藏
页码：8407 / 8410
页数：4
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