Curcuminoid–BF₂ complexes: Synthesis, fluorescence and optimization of BF₂ group cleavage

Abstract

Eight difluoroboron complexes of curcumin derivatives carrying alkyne groups containing substituents have been synthesized following an optimised reaction pathway. The complexes were received in yields up to 98% and high purities. Their properties as fluorescent dyes have been investigated. Furthermore, a strategy for the hydrolysis of the BF₂ group has been established using aqueous methanol and sodium hydroxide or triethylamine.