Metal free, facile sulfenylation of ketene dithioacetals catalyzed by an HBr–DMSO system

A transition metal free, highly efficient, sulfenylation of ketene dithioacetals catalyzed by an HBr–DMSO system is achieved. This strategy employs inexpensive and readily available HBr and DMSO to provide a direct C–H bond sulfenylation with a broad range of aryl thiols. Highlights of the present s...

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Bibliographic Details
Published in:New journal of chemistry 2019, Vol.43 (15), p.5996-6000
Main Authors: Sorabad, Ganesh Shivayogappa, Maddani, Mahagundappa Rachappa
Format: Article
Language:English
Subjects:
Aromatic compounds
Hydrogen bonds
NMR
Nuclear magnetic resonance
Pyrazole
Reaction time
Thiols
Transition metals
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Summary:A transition metal free, highly efficient, sulfenylation of ketene dithioacetals catalyzed by an HBr–DMSO system is achieved. This strategy employs inexpensive and readily available HBr and DMSO to provide a direct C–H bond sulfenylation with a broad range of aryl thiols. Highlights of the present strategy are convenient, straightforward approach, metal free, short reaction time and excellent yields. This sulfenylated product is also successfully transformed for the synthesis of pyrazole derivatives in excellent yields.
ISSN:1144-0546
1369-9261
DOI:10.1039/C9NJ00925F