Abstract
A thermoinduced radical homolytic substitution cyclization of alkenyl tethered sulfinate esters was displayed under mild metal-free conditions, enabling the functionalization of alkenes and leading to structurally diverse value-added sultine products. The process utilizes readily available substrates using inexpensive 5% benzoyl peroxide (BPO) as an initiator to generate functionalized sultines with broad functional group tolerance in medium to excellent yields in a highly atom-economical manner. In addition, the obtained sultines could be further readily functionalized toward valuable sultone frameworks in one pot. A thermo-catalytic radical chain process was proposed based on mechanistic studies.
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