期刊
GREEN CHEMISTRY
卷 24, 期 16, 页码 6113-6118出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2gc01909d
关键词
-
资金
- National Natural Science Foundation of China [21761132021]
An efficient electrochemical transition-metal-free strategy has been developed for the difunctionalization of alkenes to construct beta-alkoxyl sulfonate esters through C-S, S-O, and C-O bond formation. This strategy offers mild reaction conditions, easy-to-handle reactants, and good chemical yields, providing a green and easy access to sulfonate esters.
Sulfonate esters are privileged structures in medicinal chemistry and also exist in many natural products. Here we have developed an efficient electrochemical transition-metal-free strategy for the difunctionalization of alkenes to construct beta-alkoxyl sulfonate esters through C-S, S-O, and C-O bond formation. This reaction uses potassium metabisulfite as the sulfur dioxide surrogate under electrochemical conditions for the first time. This strategy features mild reaction conditions, easy-to-handle reactants, and good chemical yields. The mechanistic investigation suggests that this reaction proceeds through the formation of a sulfur dioxide radical cation, sulfonylation of alkene, and dual couplings with alcohol. This finding not only enriches the research contents of the metabisulfite salt but also provides a green and easy access to sulfonate esters compared with existing methodologies.
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