Iodine/Copper(I)-Catalyzed Direct Annulation of <i>N</i>
-Benzimidazolyl Amidines with Aldehydes for the Synthesis of <i>Ortho</i>
-Fused 1,3,5-Triazines
direct annulation reaction of N‐benzimidazolyl amidines with aldehydes has been established and allows the synthesis of ortho‐fused 1,3,5‐triazine derivatives. The N‐benzimidazolyl amidine substrates are readily accessible by the addition of 2‐aminobenzimidazoles to the corresponding nitriles. In the presence of molecular iodine and copper iodide, cyclization of benzimidazolyl amidines with various aldehydes