Novel Synthetic Approach to Thiophosphinates Incorporating Different N-Heterocycles

Abstract

Eight new cycloiminylidenamidothiophosphinates incorporating pyridine, pyrimidine, thiazole, and benzothiazole heterocycles were synthesized by phosphorylation of the quaternary iminium salts of the heterocycles by diphenylchlorophosphine followed by in situ sulfurization by elemental sulfur. Crystalline solid products were well characterized by elemental analysis and NMR spectroscopy.

Keywords:

• Chlorodiphenylphosphine
• cycloiminium salts
• phosphorylation
• thiophosphinates

Authors are highly thankful to Department of Chemistry, University of Rajasthan, Jaipur, for recording a number of NMR spectra and providing all necessary laboratory facilities.