Abstract
While sulfonyl hydrazides are widely utilized in organic synthesis, it is only in recent years that they have emerged as powerful sulfonyl sources. The hydrazinyl group can be readily removed from sulfonyl hydrazides under thermal, basic, oxidative, radical, and/or transition metal-catalyzed conditions, and subsequently, the remaining sulfonyl groups are able to form carbon-sulfur, sulfur-nitrogen, sulfur-halogen, sulfur-sulfur, and sulfur-selenium bonds with a wide variety of organic compounds, providing alternative approaches to the preparation of sulfones, sulfonamides, sulfonyl halides, thiosulfonates, and selenosulfonates. Moreover, some of the carbon-sulfur bond-forming reactions have been successfully applied to the construction of carbocycles, heterocycles, and stereogenic centers.
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