Thia- and selena-heterocycles containing cycloamidine substructures: Ring contraction reactions of 1,3,4-thia-/selenadiazines

Abstract

A new method for the synthesis of 1,3,4-thia-/selenadiazoles was preseted employing heterodiazines

Keywords

• ring contraction
• Dimroth rearrangement
• triazoles
• thiadiazoles
• selenadiazoles