Carbon-Carbon Bond Cleavage of .ALPHA.-Hydroxybenzylheteroarenes Catalyzed by Cyanide Ion: Retro-Benzoin Condensation Affords Ketones and Heteroarenes and Benzyl Migration Affords Benzylheteroarenes and Arenecarbaldehydes.
Synthesis of 2-Aroylquinoxalines, 1-Aroylphthalazines, and 4-Aroylcinnolines; an Aroylation Method Using Arenecarbaldehydes Catalyzed by Azolium Salt
摘要:
2-Aroylquinoxalines (5, 6), 1-aroylphthalazines (10, 11), and 4-aroylcinnolines (13) were synthesized by using arenecarbaldehydes (2) in the presence of an azolium salt (1) in moderate to good yields. 1,3-Dimethylimidazolium iodide (1a) and sodium sulfinate (7) were also effective catalysts in this aroylation.