Intramolecular nucleophilic catalysis and the exceptional reactivity of N-benzyloxycarbonyl α-aminophosphonochloridates
作者:Paul M. Cullis、Martin J. P. Harger
DOI:10.1039/b204935j
日期:——
The chloridate BnOCONHCH2P(O)(OMe)Cl is 103â104 times more reactive than ClCH2P(O)(OMe)Cl in substitution with PriOH; the α,α-dimethyl analogue is no less reactive and the N-methyl derivative is more reactive; nucleophilic participation (catalysis) by the carbamate group is implicated.
氯酸盐 BnOCONHCH2P(O)(OMe)Cl 与 PriOH 发生取代反应的反应活性是 ClCH2P(O)(OMe)Cl 的 103â104 倍;δ,δ-二甲基类似物的反应活性不低,而 N-甲基衍生物的反应活性更高;这说明氨基甲酸酯基团具有亲核参与(催化作用)。