ChemInform Abstract: Reactions of 3,6‐Bis(3,5‐dimethyl‐4‐R‐pyrazol‐1‐yl)‐1,2,4,5‐tetrazines with Indole and 1,3,3‐Trimethyl‐2‐methyleneindoline.

Abstract

Tetrazine derivatives (I) undergo a [4 + 2]‐cycloaddition with indole (II) and methylene indoline (IV) to give pyridazine derivatives (III) and (V), respectively.