Reactions of CF3SF3NCF3 with nucleophiles and the preparation of CF3SF4N(F)Rf (Rf = CF3,C2F5)

✍ Scribed by Shin-Liang Yu; Jean'ne M. Shreeve

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 464 KB
• Volume: 7
• Category: Article
• ISSN: 0022-1139
• DOI: 10.1016/s0022-1139(00)83985-8

✦ Synopsis

The new compounds, CF3SF(0)=NCF3 and CF3SF(=NCH3)=NCF3, result from nucleophilic displacement reactions of CF3SF3=NCF3 with water and methylamine, respectively. Higher yields of the di-imine are obtained when CH3N(Si(CH3)3)2 is substituted for CH3NH2. Stable fluoroamines, CF3SF4N(F)Rf (Rf = CF3, C2Fs) are prepared by fluorination of the respective amines, CF3SF4N(H)Rf, with silver difluoride or by the saturation of the double bonds in CF3SF3=NCF3 and CF3SF4N=CFCF3 with elemental fluorine in the presence of CsF. The chemical stability of the fluoroamines is significantly greater than that of either the chloroamines or amines.