Reactive species formed from N-benzyloxycarbonyl α-aminophosphonochloridates and triethylamine: probable identity and implications for synthesisElectronic supplementary information (ESI) available: NMR data for compounds 4 and 5 (X = Cl) and the products formed by them with Et3N. See http://www.rsc.org/suppdata/cc/b1/b109231f/
Reactive species formed from N-benzyloxycarbonyl α-aminophosphonochloridates and triethylamine: probable identity and implications for synthesisElectronic supplementary information (ESI) available: NMR data for compounds 4 and 5 (X = Cl) and the products formed by them with Et3N. See http://www.rsc.org/suppdata/cc/b1/b109231f/
作者:Paul M. Cullis、Martin J. P. Harger
DOI:10.1039/b109231f
日期:2002.2.27
The sterically congested phosphonochloridate BnOCONHCMe2P(O)(OMe)Cl reacts rapidly with Et3N to give what is thought to be an oxazaphospholine oxide 7 (and Et3NHCl); unhindered BnOCONHCH2P(O)(OMe)Cl seems to react in the same way, in which case the product is not a phosphonylammonium salt as has been suggested.
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.