Some O-fluoro alkyl N,N'-dialkyl isoureas are prepared by reacting fluorina
ted alcohols RFCH2CH2OH with dicyclohexyl- and diisopropyl-carbodiimides. N
,N'-diisopropyl isoureas are checked as alkylation agents for amino acids a
nd amines. They do not work at temperatures lower than 50 degrees C and dec
ompose into urea and fluorinated olefin at higher temperatures. N,N'-diisop
ropylisoureas hydrochlorides act as efficient surfactants in aqueous soluti
ons.