Palladium-Catalyzed Synthesis of 2,3-Disubstituted Benzothiophenes via the Annulation of Aryl Sulfides with Alkynes
作者:Yoshihiro Masuya、Mamoru Tobisu、Naoto Chatani
DOI:10.1021/acs.orglett.6b02055
日期:2016.9.2
A new method has been developed for the synthesis of 2,3-disubstituted benzothiophenes involving the palladium-catalyzed annulation of arylsulfides with alkynes. This convergent approach exhibited good functional group tolerance, providing rapid access to a diverse array of derivatives from simple, readily available starting materials. This protocol can also be used to synthesize 2-silyl-substituted
A benzo[b]thiophene synthesis by Rh‐catalyzedthree‐component coupling reaction of arylboronic acids, alkynes, and elemental sulfur (S8) is developed. A notable feature of this protocol is that the thienannulation (thiophene annulation) proceeds with high regioselectivity via the sequential alkyne insertion, C−H activation, and then sulfur atom transfer to the metallacycle intermediate. In a similar
开发了通过Rh催化的芳基硼酸,炔烃和元素硫(S 8)的三组分偶联反应合成苯并[ b ]噻吩。该协议的一个显着特征是,噻吩环化(噻吩环化)通过顺序的炔烃插入,CH活化以及随后的硫原子转移至金属环中间体而以高区域选择性进行。可以类似的方式,由母体联芳基硼酸和S 8合成二苯并噻吩。
Cu-Catalyzed Double S-Alkenylation of Potassium Sulfide: A Highly Efficient Method for the Synthesis of Various Thiophenes
作者:Wei You、Xiaoyu Yan、Qian Liao、Chanjuan Xi
DOI:10.1021/ol101619s
日期:2010.9.3
An efficient synthetic approach to variously substituted thiophenes has been developed through copper-catalyzed tandem S-alkenylation of potassium sulfide with 1,4-dilodo-1,3-dienes.
Cu-Catalyzed Synthesis of Diaryl Thioethers and <i>S</i>-Cycles by Reaction of Aryl Iodides with Carbon Disulfide in the Presence of DBU
作者:Peng Zhao、Hang Yin、Hongxin Gao、Chanjuan Xi
DOI:10.1021/jo400709s
日期:2013.5.17
Diaryl thioethers and S-cycles were obtained on the basis of the copper-catalyzed reaction of carbon disulfide and aryl iodides in the presence of DBU. This reaction enables the one-pot synthesis of diaryl thioethers by employing cheap, available, and easy-to-handle carbon disulfide with aryl iodides. The reaction was successfully employed in the construction of sulfur-containing cyclic molecules.