Palladium-Catalyzed Ligand-Free Decarboxylative Coupling of α- Oxocarboxylic Acid with Aryl Diazonium Tetrafluoroborate: An Access to Unsymmetrical Diaryl Ketones
作者:Subir Panja、Pintu Maity、Brindaban C. Ranu
DOI:10.1021/acs.joc.8b01922
日期:2018.10.19
Diaryl ketones are of much importance in organic synthesis as versatile intermediates and in industry for their useful properties. A mild and efficient palladium-catalyzed traditional ligand-free decarboxylativecoupling of aryl α-keto carboxylic acid with aryl diazonium fluoroborate has been developed. A series of unsymmetrical diaryl ketones has been synthesized in moderate to good yields using this
Hypervalent iodine(<scp>iii</scp>)-promoted rapid cascade reaction for the synthesis of unsymmetric azo compounds
作者:Jiabin Shen、Jun Xu、Qing Zhu、Pengfei Zhang
DOI:10.1039/d1ob00219h
日期:——
three-component cascade reaction for the synthesis of unsymmetric azocompounds via a radical activation strategy has been reported. Various aryldiazonium salts and unactivated alkenes are well compatible, providing the corresponding products in good to excellent yields. This strategy gives an efficient and practical solution for the synthesis of unsymmetric azocompounds with two C–N bond formation. A free
Pyridine-promoted diazotization of P H bonds with aryl diazonium tetrafluoroborates: Synthesis of azo organophosphorus compounds
作者:Fan Cao、Lulu Si、Shipan Xu、Longzhi Zhu、Yu Liu、Weifeng Xu、Ke-Wen Tang、Biquan Xiong、Wai-Yeung Wong
DOI:10.1016/j.tetlet.2022.154207
日期:2022.11
tetrafluoroborates is established. The reported method is simple and efficient for the synthesis of azo organophosphorus compounds with excellent yields, which avoids the adoption of complex and harsh reaction conditions and the addition of oxides, tolerating various kinds of functional groups. The synthesized azo organophosphorus compounds may have potential applications in organic chemistry and drug design.
建立了吡啶促进的 P H 键与芳基四氟硼酸重氮盐的重氮化反应。所报道的方法简单有效地合成偶氮有机磷化合物,收率高,避免了采用复杂苛刻的反应条件和氧化物的添加,可耐受各种官能团。合成的偶氮有机磷化合物在有机化学和药物设计方面具有潜在的应用价值。