Spectral study of phosphonium salts synthesized from Michael acceptors

Abstract

The synthesis of new phosphonium salts derived from Michael acceptors via a one-pot reaction process and the study of their NMR characteristics is described. The simple and rapid 1,4 addition of triphenylphosphine to the Michael acceptors in the presence of HBr (48%) (5 equivalents) was carried out at room temperature to give the corresponding phosphonium salts with excellent yields.

Graphical Abstract

Keywords:

• Unsaturated enones
• phosphonium salt
• Michael acceptors
• 1,4-addition
• 1D and 2D NMR

Disclosure statement

The authors declare no competing financial interest.

Additional information

Funding

The authors thank the DGRST and the Ministry of Higher Education Tunisia for financial support of this work.