105817-90-1Relevant articles and documents
Dication Ethers, 12. - Reaction of Enaminones with Triflic Anhydride: 3-Trifloxypropeniminium- and Bis(3-amino-2-propenylio) Ether Salts
Singer, Berndt,Maas, Gerhard
, p. 485 - 496 (2007/10/02)
Reaction of enaminones 1 a-n with triflic anhydride (Tf2O) in a 1:1 molar ratio yields 3-trifloxypropeniminium triflates 2 a-n by O-sulfonylation.With a 2:1 molar ratio, the bis(3-amino-2-propenylio) ether bistriflates 3 are obtained.The configuration of the cations of 2 and 3 is derived from 1H and 13C NMR data as far as possible.Hydrolysis of the ambifunctional salts 3 may occur either at the iminium or the vinyl ether functions.