Abstract
A wide variety of novel non‐hygroscopic N‐oxide tetraphenylborate salts were synthesized and evaluated as co‐oxidants in the Ley–Griffith (TPAP) oxidation of benzylic and allylic alcohols under non‐anhydrous conditions. The novel DABCOO·TPB (2:1) salt was herein unearthed as a viable competitor to the first‐generation NMO·TPB (2:1) salt, but more importantly gave increased performance under oxidative competition. X‐ray crystal structure analysis and NMR spectroscopy revealed that depending on the crystallization conditions 1:1, 2:1 or 3:2 N‐oxide–tetraphenylborate salts could be formed.
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