About the differentiation of anellated 1,2-dithiins in comparison to non-anellated types^†

Abstract

This review describes the synthesis and the reaction behavior of anellated 1,2-dithiins in comparison to non-anellated compounds. Moreover, it focuses on the structure of the cyclic disulfide-molecule related to their mostly red color. Results (thiophenes, trithiepins, tetrathiocins, dimers as 12-membered cyclic disulfides) of occurring evasive reactions during synthesis of anellated 1,2-dithiins are included. It also offers a practical and comprehensive summary of references (including unpublished results) plus valuable hints for a sustainable outlook.

Graphical Abstract

Keywords:

• 1,2-dithiins
• chromophore
• indigo-structure
• 1,2,3-trithiepins
• 1,2,3,4-tetrathiocins
• disulfides

Acknowledgments

I am very grateful to Professor Roland Spitzner and Helga Hintzsche for editorial assistance.