Direct C–H arylation and alkenylation of 4,4′-dialkylimidazolones with a broad range of halides under palladium and copper catalysis have been developed.
Highly efficient methods for the syntheses of spiroimidazolinones via microwave-assisted three-componentone-potsequentialreactions or one-potdominoreactions are described. The efficiency and utility of the methods have been demonstrated by quickly accessing the antihypertensive drug irbesartan (2).