Abstract This paper reports the use of rhodium (Rh) catalysts for the oxidative coupling reaction between phenylacetylene and benzaldehyde derivatives via C-H bond activation. These reactions were catalyzed by Rh(l-amino acid)(cod) (the l-amino acid is l-phenylalanine, l-valine or l-proline; cod is 1,5-cyclooctadiene) to obtain chromones in 12.7–88.3% yield. These new Rh catalysts have excellent activity for the coupling reaction between phenylacetylene and different benzaldehyde derivatives. It was found that the electronic effects of the benzaldehyde derivative substituent affected the reaction yield, which is in accordance with the proposed mechanism.

中文翻译：

---

铑配合物通过CH键活化催化苯甲醛衍生物与苯乙炔的氧化偶联

摘要 本文报道了铑 (Rh) 催化剂在苯乙炔和苯甲醛衍生物之间通过 CH 键活化的氧化偶联反应中的应用。这些反应由 Rh(l-氨基酸)(cod)（l-氨基酸是 l-苯丙氨酸、l-缬氨酸或 l-脯氨酸；cod 是 1,5-环辛二烯）催化，以获得 12.7-88.3% 的色酮屈服。这些新型Rh催化剂对苯乙炔与不同苯甲醛衍生物的偶联反应具有优异的活性。发现苯甲醛衍生物取代基的电子效应影响反应产率，这与所提出的机理一致。