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Synthesis 2019; 51(12): 2532-2541
DOI: 10.1055/s-0037-1610704
DOI: 10.1055/s-0037-1610704
special topic
Ruthenium-Catalyzed [2+2+2] Cycloaddition of α,ω-Diynes and Selenocyanates: An Entry to Selenopyridine Derivatives
Further Information
Publication History
Received: 13 March 2019
Accepted after revision: 14 March 2019
Publication Date:
10 April 2019 (online)


Published as part of the Special Topic Ruthenium in Organic Synthesis
Abstract
A novel synthetic method for the preparation of selenopyridine derivatives, involving a [2+2+2] cycloaddition of α,ω-diynes and selenocyanates that is catalyzed by a ruthenium complex is described. This mild and straightforward reaction allows access to a wide range of selenopyridines with high yields and excellent regioselectivities, using dichloromethane or dichloroethane as solvents, at either 50 or 80 °C. Post-functionalization of halogenated cycloadducts via cyanation using copper and SNAr reaction provides substituted selenopyridines with good yields.
Supporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/s-0037-1610704.
- Supporting Information