SYNTHESIS AND CHARACTERIZATION OF ARYL-2,2,2-TRIFLUOROETHYL SULFITES

Abstract

Some new unsymmetrical aryl sulfites, XC₄H₄OS(O)OCH₂CF₂ (X = H, p-CI, p-Me, o-Me, o-NO₂) are prepared and chcharacterized by molecular spectroscopy (IR, Mass, ¹H, ¹³C and ¹⁹F NMR). The ¹H NMR chemical shift difference (Δ δH_AH_B) of non equivalent α-methylene protons depend on the nature and position of substituents in the phenyl ring.

Key Words:

• Unsymmetrical sulfites
• non-equivalence
• a-methylene protons
• ring current