L. Elkaim et C. Ollivier, DIAZO ESTERS ADDITION TO TRIFLUOROPYRUVAMIDES - NEW ACCESS TO HIGHLY FUNCTIONALIZED TRIFLUOROMETHYL EPOXIDES AND DIAZO-COMPOUNDS, Synlett, (7), 1997, pp. 797
Trifluoropyruvamides in their hydrated form readily react with diazo e
aters affording new trifluoromethyl epoxides. Activating the pyruvamid
e with trifluoroacetic anhydride leads to a complete change in selecti
vity with the formation of a new diazo compound.