Tetradentate 1,1,4,4‐tetrakis(pyrazolyl)butane (1a) with a flexible backbone and 4,6‐bis[bis(pyrazolyl)methyl]dibenzofuran (1b) with a rigid linker between the bis(pyrazolyl)methyl groups readily form the corresponding 1:2 adducts 2a and 2b with trimethylalane. Coordination of AlMe3 to the pyrazolyl bases shows a negligible influence on the aromatic character of these π‐systems. In solution only one
具有柔性骨架的四齿1,1,4,4-四(
吡唑基)
丁烷(1a)和具有双(
吡唑基)甲基之间的刚性连接基的4,6-双[双(
吡唑基)甲基]
二苯并呋喃(1b)容易与
三甲基铝烷形成相应的1:2加合物2a和2b。AlMe 3与
吡唑基的配位对这些π系统的芳族特性影响可忽略不计。在溶液中,对于
吡唑基取代基仅观察到一组共振,证明了在
吡唑基路易斯碱之间AlMe 3的快速交换平衡。