Enhancing catalytic activity of pyridines via para-iminophosphorano substituents

Autor: C. Adam Dyker, Nicholas A. Richard, Grant D. Charlton
Rok vydání: 2021
Předmět:
Zdroj: Organic & Biomolecular Chemistry. 19:9167-9171
ISSN: 1477-0539
1477-0520
Popis: Four pyridines decorated with π-donating iminophosphorano substituents (R3PN–) 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 (σp+), 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.
Databáze: OpenAIRE