KI as iodine source for the synthesis of E-iodovinyl sulfones via metal-free iodosulfonylation of terminal alkynes

The E-selective iodosulfonylation of terminal alkynes has been achieved by employing sulfonyl hydrazines and potassium iodide as sulfonyl and iodine sources, respectively. Besides using simple and cheap reactants, the present method requires no metal catalyst and proceeds well at room temperature. A...

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Bibliographic Details
Published in:Phosphorus, sulfur, and silicon and the related elements sulfur, and silicon and the related elements, 2017-12, Vol.192 (12), p.1301-1304
Main Authors: Yang, Lu, Hu, Deqing, Wei, Li, Liu, Yunyun
Format: Article
Language:English
Subjects:
Alkyne
Alkynes
E-selective
Hydrazines
Iodine
iodosulfonylation
potassium iodide
Potassium iodides
Sulfones
transition metal-free
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Summary:The E-selective iodosulfonylation of terminal alkynes has been achieved by employing sulfonyl hydrazines and potassium iodide as sulfonyl and iodine sources, respectively. Besides using simple and cheap reactants, the present method requires no metal catalyst and proceeds well at room temperature. A broad array of iodovinyl sulfones have been efficiently synthesized via the alkyne difunctionalization in the presence of benzoic peroxyanhydride (BPO).
ISSN:1042-6507
1563-5325
DOI:10.1080/10426507.2017.1359596