Dihalooxygenation of Alkynes and Alkynols: Preparation of 2,2-Dihaloketones and gem-Dihalolactols
作者:Charnsak Thongsornkleeb、Nattawadee Chaisan、Sureeporn Ruengsangtongkul、Jumreang Tummatorn、Somsak Ruchirawat
DOI:10.1055/a-1774-7077
日期:2022.9
A mild and convenient method for the synthesis of 2,2-dihaloketones and gem-dihalolactols has been developed. For the synthesis of 2,2-dihaloketones, alkynes were employed as substrates to react with halogenating agents, Cl2 or ClBr, that were generated in situ from aqueous HCl and NCS or NBS, respectively. On the other hand, gem-dihalolactols could be prepared from alkynol substrates by using the
开发了一种温和方便的合成 2,2-二卤代酮和偕二卤代乳醇的方法。对于 2,2-二卤代酮的合成,采用炔烃作为底物,与分别由 HCl 水溶液和 NCS 或 NBS 原位生成的卤化剂 Cl 2或 ClBr 反应。另一方面,通过使用相同的反应条件,可以从炔醇底物制备偕二卤代乳醇。该方法可应用于广泛的基材,以低至良好的产率提供相应的产品。