Copper-catalyzed tandem S-alkylation and S-alkenylation of sodium sulfide: synthesis of 2,3-dihydrothiophenes and thiophenes
摘要:
An efficient synthetic approach to variously substituted 2,3-dihydrothiophenes has been developed. The reaction proceeded by copper-catalyzed tandem S-alkylation and S-alkenylation of sodium sulfide with 1,4-diiodobut-1-enes to afford the corresponding 2,3-dihydrothiophene derivatives in high yields. The 2,3-dihydrothiophenes could bear alkyl, aryl as well as heteroaryl substituents. The resulted 2,3-dihydrothiophenes could be further transferred into the corresponding thiophenes by oxidation. (C) 2013 Elsevier Ltd. All rights reserved.
Copper-catalyzed tandem S-alkylation and S-alkenylation of sodium sulfide: synthesis of 2,3-dihydrothiophenes and thiophenes
摘要:
An efficient synthetic approach to variously substituted 2,3-dihydrothiophenes has been developed. The reaction proceeded by copper-catalyzed tandem S-alkylation and S-alkenylation of sodium sulfide with 1,4-diiodobut-1-enes to afford the corresponding 2,3-dihydrothiophene derivatives in high yields. The 2,3-dihydrothiophenes could bear alkyl, aryl as well as heteroaryl substituents. The resulted 2,3-dihydrothiophenes could be further transferred into the corresponding thiophenes by oxidation. (C) 2013 Elsevier Ltd. All rights reserved.
Copper-catalyzed tandem S-alkylation and S-alkenylation of sodium sulfide: synthesis of 2,3-dihydrothiophenes and thiophenes
作者:Qian Liao、Wei You、Zhen-Bang Lou、Li-Rong Wen、Chanjuan Xi
DOI:10.1016/j.tetlet.2013.01.019
日期:2013.3
An efficient synthetic approach to variously substituted 2,3-dihydrothiophenes has been developed. The reaction proceeded by copper-catalyzed tandem S-alkylation and S-alkenylation of sodium sulfide with 1,4-diiodobut-1-enes to afford the corresponding 2,3-dihydrothiophene derivatives in high yields. The 2,3-dihydrothiophenes could bear alkyl, aryl as well as heteroaryl substituents. The resulted 2,3-dihydrothiophenes could be further transferred into the corresponding thiophenes by oxidation. (C) 2013 Elsevier Ltd. All rights reserved.