A Highly Stereoselective Synthesis of E-(But-1-en-3-yne-1-sulfonyl) hetarenes and Disubstituted 2-Benzothiazolyl Alkynes by Palladium Catalyzed Sonogashira Type Coupling of 2-Chlorovinylsulfones
Synthesis of Internal Alkynes through the Pd-Catalyzed Coupling of Heteroaryl Halides with Terminal Alkynes
作者:Linhua Lu、Hong Yan、Peng Sun、Yan Zhu、Hailong Yang、Defu Liu、Guangwei Rong、Jincheng Mao
DOI:10.1002/ejoc.201201689
日期:2013.3
Sonogashira-type cross-couplings of functionalized heterocyclic halides with terminalalkynes were performed efficiently at room temperature. The heteroarylhalides were easily prepared from the corresponding heterocyclic compounds. The catalytic system tolerated a very broad scope of substrates; oxazoles, thiazoles, and furans participate in this type of reaction for the first time. This reaction
CuI assisted desulfurative Sonogashira reaction of mercapto N-heterocyclic derivatives with alkynes
作者:Zan Yang、Jiao Li、Tao Yang、Congshan Zhou
DOI:10.1039/c6ra05104a
日期:——
A palladium catalyzed Sonogashira reaction of mercapto N-heterocyclic derivatives with terminal alkynes by using CuI as the desulfurative reagent was described in this report. It provided an effective strategy for obtaining sp–sp2 cross-coupling products in good yields. The reaction mechanism was also investigated by density functional theory (DFT) calculation.
Copper-assisted palladium catalyzed the cross-coupling reaction of Alknylalane reagents with 2-Thiobenzo[d]thiazoles via C–S bond cleavage
作者:Hong-Liu Xiao、Xiao-Ying Jia、Jia-Xia Pu、Li-Rong Han、Qing-Han Li
DOI:10.1016/j.tet.2024.133850
日期:2024.3
A highlyefficient and simple route for the synthesis of 2-alknyl benzo[]thiazoles has been developed by palladium and copper catalyzed the cross-coupling reaction of 2-thiobenzo[]thiazoles with (hetero)aromatic and aliphatic alkynylaluminum reagents. Various 2-alkynyl benzo[]thiazole derivatives can be obtained in 19–97 % isolated yields using 1 mol% PdCl(dppf)/5 mol% xanthpos as the catalyst and