Wu group and Schaefer group published article on Chem. Comm. about Why Does Togni’s Reagent I Exist in the High-Energy Hypervalent Iodine Form? Re-evaluation of Benziodoxole Based Hypervalent Iodine Reagents
Togni’s Reagents have become very popular trifluoromethylating reagents in organic synthesis. The existing form of Togni’s Reagent I is a hypervalent iodine compound which lies much higher in energy than its ether isomer. The high-energy hypervalent iodine form makes Togni’s Reagent I very effective and versatile. The energy differences between the two forms correlate with the trans influence of the substituents. The five-membered ring in the benziodoxole-based scaffold is an important reason for its existence in the higher-energy form. The relation to Buchwald’s 2014 research is discussed.
Prof. Xinhao Zhang from Wu group is the co-first auther of this article. The Ph.D. student Tian-Yu Sun and Hao Geng are the first and third author of this paper respectively. This article was published in the Chem. Comm.. (tianyu sun, Xiao Wang, Hao Geng, Yaoming Xie, Yun-Dong Wu, Xinhao Zhang and Henry F. Schaefer, Why Does Togni’s Reagent I Exist in the High-Energy Hypervalent Iodine Form? Re-evaluation of Benziodoxole Based Hypervalent Iodine Reagents, Chem. Comm., 2016, Accepted Manuscript DOI: 10.1039/C6CC00384B)