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Richard, Nicholas A; Charlton, Grant D; Dyker, C Adam
Organic & biomolecular chemistry, 11/2021, Letnik: 19, Številka: 42Journal Article
Four pyridines decorated with π-donating iminophosphorano substituents (R PN-) in the 4-position were assessed as acylation catalysts. These catalysts display high sensitivity to the groups at phosphorus, with activities that are well correlated to the corresponding Hammett-type substituent constants (σ ), and can achieve superior activity over the most active dialkylamino-substituted pyridines. Iminophosphorano-substituted pyridines represent an easily accessible, tunable, and highly active class of nucleophilic organocatalysts.
