Copper-Catalyzed Synthesis of Functionalized Aryl Sulfonamides from Sodium Sulfinates in Green Solvents
作者:Long Yin Lam、King Hong Chan、Cong Ma
DOI:10.1021/acs.joc.2c00777
日期:2022.7.1
industry. A one-step synthesis catalyzed by a copper salt was developed using stable solid commodity chemicals in sulfolane or, alternatively, in green solvents such as γ-valerolactone, iPrOAc, or nBuOAc with acetic acid. The method tolerated diverse functional groups commonly presented in current medicines and drug intermediates. The mechanistic study showed a radical coupling pathway between the sulfonyl
官能化芳基磺酰胺是制药工业中的重要组成部分。使用稳定的固体商品化学品在环丁砜中或在绿色溶剂(如 γ-戊内酯、 i PrOAc 或n BuOAc 与乙酸)中开发了由铜盐催化的一步合成。该方法耐受当前药物和药物中间体中常见的多种官能团。机理研究表明,磺酰基和苯胺自由基之间的自由基偶联途径分别通过使用 K 2 S 2 O 8和铜催化剂。
ALBEROLA, A.;GONZALEZ, A. M.;LAGUNA, M. A.;PULIDO, F. J., SYNTHESIS, BRD, 1983, N 5, 413-414
作者:ALBEROLA, A.、GONZALEZ, A. M.、LAGUNA, M. A.、PULIDO, F. J.
DOI:——
日期:——
Sequential C–S and S–N Coupling Approach to Sulfonamides
A one-potthree-componentreaction involving nitroarenes, (hetero)arylboronic acids, and potassium pyrosulfite leading to sulfonamides was described. A broad range of sulfonamides bearing different reactive functional groups were obtained in good to excellent yields through sequential C-S and S-N coupling that does not require metal catalysts.