Organic letters
Synthesis of Benzarsoles by Arsenic Cation-Mediated Formal [3 + 2]-Cycloaddition with Alkynes.
Hiroki Iwamoto, Kazutoshi Nishimura, Kosuke Yasui, Koji Hirano
Published: 202510.1021/acs.orglett.5c04431
Abstract
A Tf2O-mediated formal [3 + 2]-cycloaddition of phenylarsine oxide and internal alkynes has been developed. An initially formed arsenic dication undergoes disproportionation to form key arsenic cation species, which are then coupled with alkynes, fin…
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