Efficient Intramolecular General Acid Catalysis of Nucleophilic Attack on a Phosphodiester
作者:Anthony J. Kirby、Marcelo F. Lima、Davi da Silva、Christo D. Roussev、Faruk Nome
DOI:10.1021/ja066439u
日期:2006.12.1
phosphate 4 and its reactions with a representative range of nucleophiles are catalyzed by the dimethylammonium group at acidic pH with rate accelerations of the order of 106. The reaction persists up to pH 7 because the strong intramolecular hydrogen bond, which is the key to efficient general acid catalysis, is present also in the reactant. The sensitivity to the basicity of the nucleophile (Brønsted beta(nuc)