Access to Imidazo[1,2‐a]imidazolin‐2‐ones and Functionalization Through Suzuki—Miyaura Cross‐Coupling Reactions.

We report herein a synthetic pathway to new 6(5)-bromo-5(6)-methylimidazo[1,2-a]imidazolin-2-ones. The synthetic potential of these scaffolds was demonstrated by displacing bromine by Suzuki–Miyaura cross-coupling reactions. A large panel of boronic acids (aryl, heteroaryl or vinyl) could easily be introduced, giving access to a large and diversified library of 6(5)-substituted 5(6)-methylimidazo[1,2-a]imidazolin-2-ones.