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http://localhost:8080/xmlui/handle/123456789/564| Title: | Basak, A. Base Induced Cyclization of PropargylAlkenylSulphones. A High Yielding Synthesis of 4,5-Disubstituted 2H-Thiopyran 1,1-dioxides |
| Authors: | Das, J |
| Keywords: | Sulfur heterocycles Cyclization Electrocyclic reactions Alkynes Allylic compounds |
| Issue Date: | 2015 |
| Publisher: | Eur. J. Org. Chem. |
| Abstract: | A convenient synthesis of 4,5-disubstituted 2H-thiopyran 1,1-dioxides is reported through a base induced process starting from eneyne sulfones. Except for strongly electronwithdrawing groups, the reaction tolerated a wide variety of substituents in the two aryl rings. This finding represents a major departure from the behaviour of the corresponding ethers. The reaction most probably proceeds through a 6π-electrocyclization from an in-situ-generated 1,3,5-trienyl sulfinate. |
| URI: | http://localhost:8080/xmlui/handle/123456789/564 |
| Appears in Collections: | Journal Paper / Article |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Base-Induced Cyclization of Propargyl Alkenylsulfones A High-Yielding.pdf | 2.22 MB | Adobe PDF | View/Open |
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