Background: Alkali metal S-alkylthiosulfates and S-aryl thiosulfates are known as Bunte
salts following its discovery as sodium S-ethylthiosulfate by Hans Bunte in 1874. Since then, various
derivatives including selenium-containing Bunte salts have been prepared and used as a sulfursurrogates
in different organic transformations. Additionally, they exhibit diverse biological activities
as well as are used in self-assembled monolayers (SAM) on gold and other metals.
Methods: New methods for the preparation of Bunte salts have been developed over the last two
decades along with diverse procedures for organic transformations.
Results: This review article has focused primarily on newer preparative methods of Bunte salts, diverse
applications in various organic reactions establishing them as suitable and potential sulfur surrogates.
Other applications such as their biological activities, use in making self-assembled monolayers
on gold and other metals have also been discussed.
Conclusion: Recent literatures on Bunte salts are presented to illuminate their importance in various
fields. It is clearly evident that the Bunte salts and its congeners could be synthesized easily by different
simple procedures as well as they can be suitably used to synthesize many important
S-containing organic compounds. Other miscellaneous uses are also discussed in this article.