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. Author manuscript; available in PMC: 2019 Jan 2.
Published in final edited form as: Chem Commun (Camb). 2018 Dec 13;54(100):14089–14092. doi: 10.1039/c8cc08533a

Fig. 2.

Fig. 2

(a) The (3+2) cycloaddition reaction of sydnone; (b) release of sulfonamides through the (3+2) reaction of N6-sulfonyl sydnonimines. aOnly one regioisomer is depicted.