respectively. The structures of complexes 2–6 were characterized by spectral methods and X-ray crystallographic analyses. These aluminum complexes showed a high catalytic activity in the addition of amines to carbodiimides to form guanidines. The mechanism of the catalytic process was studied by control experiments and 1H NMR monitoring. Together with the isolation of the complex [2-(2,6-Me2C6H3N═
                                    研究了AlMe 3或AlEt 3与2-
吡啶基或
吲哚基取代的
亚胺的反应,导致形成不同的
有机铝络合物。亚
氨基吡啶Cy [N═CMe-2-(C 5 H 4 N)] 2(L 1)的反应是由1-(
吡啶-2-基)乙酮和
反式-1,2-环己二胺与AlEt 3的反应得到铝络合物Cy [NC(Me)(Et)-2-(C 5 H 4 N)AlEt 2 ] 2(1),其中通过添加两个乙基将
配体的两个酮
亚胺基转化为酰胺官能团,L 1与AlMe 3的反应得到铝络合物Cy [NC(2CH 2)-2-(C 5 H 4 N)AlMe 2 ] 2(2)通过sp 3 C–H活化并消除了两个
甲烷分子。
吲哚基-2-醛
亚胺(2-(RN═CH)C 8 H 5 NH(R = t Bu(L 2 H),C 6 H 5(L 3 H),2,6-Me 2 C 6 H 3(L 4 H))与AlMe 3或AlEt 3仅提供去质子化的
吲哚基铝配合物[2-(RN═CH)C