200941-07-7Relevant academic research and scientific papers
Alternatives to 1-H-tetrazole in the preparation of phosphonate diesters and phosphonamidates from phosphonyl dichlorides
Maung, Jack,Mallari, Jeremy P.,Choy, Cindy J.,Berkman, Clifford E.
, p. 6497 - 6499 (2007/10/03)
5-Ethylthio-1-H-tetrazole (SET) and 4,5-dicyanoimidazole (DCI) were found to be suitable alternatives to 1-H-tetrazole for catalyzing the formation of mixed phosphonate diesters and phosphonamidates from phosphonyl dichlorides through a two-step one-pot reaction. 5-Ethylthio-1-H-tetrazole (SET) and 4,5-dicyanoimidazole (DCI) were examined as alternatives to 1-H-tetrazole to mediate the synthesis of phosphonate diesters and phosphonamidates from phosphonyl dichlorides through a two-step one-pot reaction in various organic solvents. SET and DCI were comparable to 1-H-tetrazole for catalyzing these reactions. SET afforded slightly greater yields than DCI while benzene was universally the best solvent for this reaction.
Evaluation of phosphorus-containing inhibitors of γ-glutamyl hydrolase
Rodriguez, Chester E.,Holmes, H. Michael,Mlodnosky, Karyn L.,Lam, Vinh Q.,Berkman, Clifford E.
, p. 1521 - 1524 (2007/10/03)
Several putative, phosphorus-containing inhibitors of γ-glutamyl hydrolase were synthesized and evaluated for inhibitory activity. The phosphonamidoic acids were shown to be weak competitive inhibitors while both a phosphoramidate diester and a phosphonamidate ester were shown to be potent time-dependent inactivators, presumably through irreversible phosphorylation of an active site nucleophile.
A convenient two-step one-pot synthesis of phosphonamidates
Mlodnosky, Karyn L.,Holmes, H. Michael,Lam, Vinh Q.,Berkman, Clifford E.
, p. 8803 - 8806 (2007/10/03)
Phosphonamidates are formed in high yield from a one-pot sequential reaction of a phosphonyl dichloride with an alcohol and then an amine in the presence of catalytic 1H-tetrazole. Undesired disubstitution of the phoshphonyl dichloride by the alcohol or the amine is minimal due to the presence of tetrazole.
