Retraction of “Transition Metal-Catalyzed Ring Expansion of

Retraction pubs.acs.org/OrgLett

Retraction of “Transition Metal-Catalyzed Ring Expansion of Diazocarbonylated Cyclic N‑Hydroxylamines: A New Approach to Cyclic Ketonitrones” Evelyn Lieou Kui, Alice Kanazawa,* Jean-François Poisson, and Sandrine Py* Org. Lett. 2014, 16 (17), 4484−4487, DOI: 10.1021/ol502029z

T

he authors retract this Letter because recently obtained Xray diffraction data reveals that the structures of the products reported and the reaction mechanism described are incorrect.

Received: November 30, 2015

© XXXX American Chemical Society

A

DOI: 10.1021/acs.orglett.5b03426 Org. Lett. XXXX, XXX, XXX−XXX