Schiff Base Derivatives of Boron. Synthesis of Boron Derivatives of the Schiff Bases Derived from the Condensation of 1-Phenyl-1,3-butane-dione with Hydroxy Alkylamines or Arylamines

TLDR: In this article, the synthesis of B(OEt)(SB) and B(SB)(SBH) types of derivatives (where SB− and SBH− are the anions of the Schiff bases, SBH2) is reported.

Abstract: Synthesis of B(OEt)(SB) and B(SB)(SBH) types of derivatives (where SB− and SBH− are the anions of the Schiff bases, SBH2) is reported. These are formed by 1:1 and 1:2 molar reactions of boron ethoxide with the bifunctional tridentate Schiff bases such as 3-(2-hydroxyethyl)amino-1-phenyl-2-buten-1-one, 3-(2-hydroxy-n-propyl)amino-1-phenyl-2-buten-1-one and 3-(2-hydroxyphenyl)amino-1-phenyl-2-buten-1-one respectively. The labile nature of the ethoxy groups in 1:1 derivatives has been shown by carrying out exchange reactions with an excess of t-butyl alcohol. The resulting derivatives have been characterized by elemental analysis, molecular weight determinations, conductance measurements and infrared and proton magnetic resonance spectra.