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.
Pd-Catalyzed Alkenyl Thioether Synthesis from Thioesters and <i>N</i>-Tosylhydrazones
作者:Kota Ishitobi、Kei Muto、Junichiro Yamaguchi
DOI:10.1021/acscatal.9b04212
日期:2019.12.6
A Pd-catalyzed alkenyl thioethersynthesis was achieved using thioesters and N-tosylhydrazones as starting materials. The thioester acted as an efficient “sulfur source” for catalytic C–S bond formation using N-tosylhydrazone. This method gave Z-alkenyl thioethers with high diastereoselectivity (up to 99:1 diastereomeric ratio). This transformation displayed a wide functional group tolerance and was
Ligand-Controlled Divergent Cross-Coupling Involving Organosilicon Compounds for Thioether and Thioester Synthesis
作者:Zongjun Qiao、Xuefeng Jiang
DOI:10.1021/acs.orglett.6b00324
日期:2016.4.1
A divergent cross-coupling for both thioether and thioester construction from organosiliconcompounds has been developed. Predominant selectivity for Hiyama-type coupling and C1 insertion reaction was achieved under the guidance of ligands. Thioether was obtained under ligand-free conditions in which disulfide generated from homocoupling could be prevented. Meanwhile, application of bidentate phosphine