Palladium-Catalyzed Cross-Coupling Reaction of (1-Ethoxy-1-alken-2-yl)boranes With<i>ortho</i>-Functionalized Iodoarenes. A Novel and Convenient Synthesis of Benzo-Fused Heteroaromatic Compounds

Abstract

ortho-Functionalized styryl ethers are obtained in high yields by palladium-catalyzed cross coupling between (1-ethoxy-1-alken-2-yl)boranes and aryl halides. These styryl ethers are converted to benzo-fused heteroaromatic compounds by cyclodehydration.