A base-initiated thioesterification of amides with various thiols is reported. This reaction can take place efficiently under metal-free and air-atmospheric conditions, and provides a facile and practically useful approach to the synthesis of valuable acyl thioesters.
Rhodium-catalyzed synthesis of unsymmetric di(heteroaryl) compounds via heteroaryl exchange reactions
作者:Mieko Arisawa
DOI:10.1080/10426507.2019.1602621
日期:2019.7.3
activities by interacting with proteins and nucleic acids. Then, synthesis of such compounds is critical for the development of drugs. Unsymmetric HetAr-X-HetAr′ compounds were efficiently synthesized by rhodium-catalyzed heteroaryl exchangereactions, which involved equilibrium control by judicious design of organic heteroaryl reagents. This method allows synthesis of unsymmetric HetAr–O–HetAr′, HetAr–S–HetAr′
Copper-catalyzed decarboxylative coupling between α-oxocarboxylic acids and diphenyl disulfides or thiophenols is presented, which provided an effective and direct approach for the preparation of useful thioesters through C(sp2)–S bond formation.
Visible-Light-Promoted Thiyl Radical Generation from Sodium Sulfinates: A Radical–Radical Coupling to Thioesters
作者:Ganganna Bogonda、Dilip V. Patil、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.9b01218
日期:2019.5.17
available starting materials: acid chlorides and sodium sulfinates. The facile generation of acyl radical species under the visible light photoredox conditions allows the formation of thiylradical species from sodium sulfinates via multiple single electron transfer reactions, where the final acyl radical-thiyl radical coupling has been accomplished. The direct radical–radical coupling strategy offers a mild
Synthesis of Tetrasubstituted Thiophenes via Direct Metalation
作者:Jan Skácel、Martin Dračínský、Zlatko Janeba
DOI:10.1021/acs.joc.9b02803
日期:2020.1.17
synthetic procedures. The most convenient method seems to be derivatization viadirectmetalation, but synthesis of polysubstituted thiophenes bearing reactive groups is difficult because of high reactivity of organometallic reagents. This work reports the preparation of complex heterocyclic compounds using directmetalation of thiophenes with various reagents (Knochel-Hauser bases, LDA) as an efficient