Diiminium Nucleophile Adducts Are Stable and Convenient Strong Lewis Acids**
作者:Niklas Bormann、Jas S. Ward、Ann Kathrin Bergmann、Paula Wenz、Kari Rissanen、Yiwei Gong、Wolf‐Benedikt Hatz、Alexander Burbaum、Florian F. Mulks
DOI:10.1002/chem.202302089
日期:2023.10.18
Diiminium nucleophile adducts, convenient Lewis acids that satisfy some measures for superacidity, have been synthesised by coordination with stabilising pyridine donors. Even in their abstraction of half an equivalent of oxide from a P=O bond, favourable abstraction kinetics were observed. Our preliminary results combined with price and safety considerations suggest that the adducts are excellent acylation