Abstract
Strained eight-membered cyclic alkynes undergo rapid inverse electron demand cycloaddition with sulfonyl azides to give the corresponding 1-sulfonylcyclooctatriazoles in excellent yield. Treatment of these sulfonyltriazoles with a chiral rhodium(II) carboxylate catalyst prompted transannular C-H bond insertion in good yield and with excellent ee, or 1,2-H shift.
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