transition metal. Catalytic dehydrocoupling of Me2NH·BH3 (1) and Et2NH·BH3 (5) was demonstrated using 5 mol % skeletal Ni catalyst at 20 °C and produced [Me2N–BH2]2 (2) and [Et2N–BH2]2/Et2N═BH2 (6), respectively. The related adduct iPr2NH·BH3 (7) was also dehydrogenated to afford iPr2N═BH2 (8) but with significant catalyst deactivation. Catalytic dehydrocoupling of MeNH2·BH3 (9) was found to yield the
由Ni / Al合
金中Al的选择性浸出产生的骨架Ni已成功用于各种胺-
硼烷加合物的催化脱氢。低成本和简便的单步合成相结合,使该系统成为先前描述的贵
金属和其他第一行
金属催化剂的潜在有吸引力的替代品。催化剂的非均质性质有利于方便的产物纯化,这是第一个基于第一行过渡
金属的此类系统。使用5 mol%的骨架Ni催化剂在20°C下证明了Me 2 NH·BH 3(1)和Et 2 NH·BH 3(5)的催化脱氢偶联并生成了[Me 2的N- BH 2 ] 2(2)和[等2的N- BH 2 ] 2 / ET 2 N═BH 2(6),分别。相关的加合物i Pr 2 NH·BH 3(7)也被脱氢得到i Pr 2 N = BH 2(8),但催化剂明显失活。发现MeNH 2 ·BH 3(9)催化脱氢反应生成环状三氮杂
硼烷[MeNH–BH 2 ] 3(10)为主要产物,而当使用
化学计量的Ni时,会形成高分子量聚(甲基
氨基
硼烷)[MeNH-BH