A four-component reaction of aryldiazonium tetrafluoroborates, sulfur dioxide, 1,2-dibromoethane, and hydrazines??
Organic & Biomolecular Chemistry Pub Date: 2015-08-24 DOI: 10.1039/C5OB01765C
Abstract
A four-component reaction of aryldiazonium tetrafluoroborates, sulfur dioxide, 1,2-dibromoethane, and hydrazines under metal-free conditions is described, providing a novel and efficient approach to 2-arylsulfonyl hydrazones. This transformation proceeds smoothly via insertion of sulfur dioxide under mild conditions with good functional group tolerance.
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Journal Name：Organic & Biomolecular Chemistry
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CAS no.: 89640-58-4
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