10297-05-9Relevant articles and documents
Homogeneous Nucleophile Exchange. 1. Simple, High-Yield Synthesis of Some Heterodihalides
Hahn, Roger C.
, p. 1331 - 1333 (1988)
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Transformation of OH-adduct of 1-chloro-4-iodobutane into intra-molecular radical cation in neutral aqueous solution
Mohan, Hari,Maity,Chattopadhyay,Mittal
, p. 493 - 498 (1999)
The iodine centered OH-adduct formed on reaction of OH radicals with 1-chloro-4-iodobutane in neutral aqueous solution transforms (k=5.4×105 s-1) to an intra-molecular radical cation (). The unfavorable structural conformation of solute radical cation generated on reaction of OH radicals with 1-chloro-5-iodopentane does not allow the transformation of OH-adduct into an intra-molecular radical and instead a dimer radical cation () is formed.
Aliphatic C-H Bond Iodination by a N-Iodoamide and Isolation of an Elusive N-Amidyl Radical
Artaryan, Alexander,Mardyukov, Artur,Kulbitski, Kseniya,Avigdori, Idan,Nisnevich, Gennady A.,Schreiner, Peter R.,Gandelman, Mark
, p. 7093 - 7100 (2017/07/26)
Contrary to C-H chlorination and bromination, the direct iodination of alkanes represents a great challenge. We reveal a new N-iodoamide that is capable of a direct and efficient C-H bond iodination of various cyclic and acyclic alkanes providing iodoalkanes in good yields. This is the first use of N-iodoamide for C-H bond iodination. The method also works well for benzylic C-H bonds, thereby constituting the missing version of the Wohl-Ziegler iodination reaction. Mechanistic details were elucidated by DFT computations, and the N-centered radical derived from the used N-iodoamide, which is the key intermediate in this process, was matrix-isolated in a solid argon matrix and characterized by UV-vis as well as IR spectroscopy.
Epiquinamide: A Poison That Wasn't from a Frog That Was
Fitch, Richard W.,Sturgeon, Gordon D.,Patel, Shaun R.,Spande, Thomas F.,Garraffo, H. Martin,Daly, John W.,Blaauw, Richard H.
supporting information; experimental part, p. 243 - 247 (2009/06/19)
In 2003, we reported the isolation, structure elucidation, and pharmacology of epiquinamide (1), a novel alkaloid isolated from an Ecuadoran poison frog, Epipedobates tricolor. Since then, several groups, including ours, have undertaken synthetic efforts to produce this compound, which appeared initially to be a novel, β2-selective nicotinic acetylcholine receptor agonist. Based on prior chiral GC analysis of synthetic and natural samples, the absolute structure of this alkaloid was established as (15,9aS)-1-acetamidoquinolizidine. We have synthesized the (1.R*,9aS*)-isomer (epiepiquinamide) using an iminium ion nitroaldol reaction as the key step. We have also synthesized ent-1 semisynthetically from (-)-lupinine. Synthetic epiquinamide is inactive at nicotinic receptors, in accord with recently published reports. We have determined that the activity initially reported is due to cross-contamination from co-occurring epibatidine in the isolated material.