Easy and Rapid Method for Disulfide Syntheses Using Nanophase-Manganese (VII) Oxide Coated Clay

Abstract

Disulfide bond formation by the oxidation of several thiol compounds using nanophase manganese (VII) oxide coated clay (NM7O coated clay) in chlorinated, nonchlorinated (toluene), and polar solvents (water) is described. During the process, nitro and methoxy groups remain unaffected. The NM7O coated clay is easily prepared, stable, and inexpensive to manufacture. Furthermore, this and other studies prove that NM7O coated clay properties, i.e., mineralogy, chemical, and reactivity, are different from KMnO₄. This rapid and facile synthesis coupled with the use of the recyclable NM7O coated clay catalyst will save energy due to low temperature and rapid reaction times, as well as minimal disposal problems, thus decreasing production costs.

Keywords:

• Catalyst
• coupling
• easy and rapid synthesis energy
• stable

Acknowledgments

S.R.G. would like to acknowledge Prodev, Inc., for partial funding on this project. Furthermore, the authors would like to thank Mr. Xiang Hua and Mrs. Jyothi Lekla for their assistance on the project.