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Synthesis and Reactivity of Fluorinated Triaryl Aluminum Complexes.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-09-01 , DOI: 10.1021/acs.inorgchem.0c01076
Darren M C Ould 1 , Jamie L Carden 1 , Rowan Page 1 , Rebecca L Melen 1
Affiliation  

The addition of the Grignard 3,4,5-ArFMgBr to aluminum(III) chloride in ether generates the novel triarylalane Al(3,4,5-ArF)3·OEt2. Attempts to synthesize this alane via transmetalation from the parent borane with trimethylaluminum gave a dimeric structure with bridging methyl groups, a product of partial transmetalation. On the other hand, the novel alane Al(2,3,4-ArF)3 was synthesized from the parent borane and trimethylaluminum. Interestingly, the solid-state structure of Al(2,3,4-ArF)3 shows an extended chain structure resulting from neighboring Al···F contacts. Al(3,4,5-ArF)3·OEt2 was then found to be an effective catalyst for the hydroboration of carbonyls, imines, and alkynes with pinacolborane.

中文翻译:

氟化三芳基铝配合物的合成和反应性。

将格利雅3,4,5-Ar F MgBr添加到乙醚中的氯化铝(III)中,生成新的三芳基铝烷Al(3,4,5-Ar F3 ·OEt 2。尝试通过将母体硼烷与三甲基铝进行重金属化合成该烷烃,得到具有桥连甲基的二聚结构,这是部分重金属化的产物。另一方面,新型的烷烃Al(2,3,4-Ar F3是由母体硼烷和三甲基铝合成的。有趣的是,Al(2,3,4-Ar F3的固态结构显示了由相邻的Al···F接触导致的延伸链结构。Al(3,4,5-Ar F3·然后发现OEt 2是用频哪醇硼烷对羰基,亚胺和炔烃进行硼氢化的有效催化剂。
更新日期:2020-10-21
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