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Tuning Secondary-Sphere Lewis Acidity via Late-Stage Modification of an Appended Borane
To develop synthetic strategies to construct ligands containing secondary sphere acids, we demonstrate that an appended borane of low Lewis acidity (–BPin) can be upgraded to a strong Lewis acid (–BF2). Using a pyridine-pyrazole ligand coordinated to Mo(CO)4, we show that a pendent –BPin group undergoes exhaustive fluorination to –BF3K, a precursor to a highly acidic –BF2 unit (acceptor number ~15x greater than –BPin).
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- Award ID(s):
- 2154678
- PAR ID:
- 10623704
- Publisher / Repository:
- ACS
- Date Published:
- Journal Name:
- Inorganic Chemistry
- Volume:
- 63
- Issue:
- 48
- ISSN:
- 0020-1669
- Page Range / eLocation ID:
- 22650 to 22655
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
-
Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1021/acs.inorgchem.4c03056
