Preparation and X-ray crystal structure of 2-iodyl-N,N-dialkylaniline oxides: first entry into the heterocyclic system of benziodoxazole
作者:Viktor V. Zhdankin、Victor N. Nemykin、Rashad R. Karimov、Zeinul-Gabiden Kazhkenov
DOI:10.1039/b813163e
日期:——
The oxidation of 2-iodo-N,N-dialkylanilines with an excess of dimethyldioxirane in acetone affords 2-iodyl-N,N-dialkylaniline oxides, structural features of which are in agreement with the new heterocyclic system of benziodoxazole.
Competitive Reaction Pathways for <i>o</i>-Anilide Aryl Radicals: 1,5- or 1,6-Hydrogen Transfer versus Nucleophilic Coupling Reactions. A Novel Rearrangement to Afford an Amidyl Radical
作者:Valentina Rey、Adriana B. Pierini、Alicia B. Peñéñory
DOI:10.1021/jo801892c
日期:2009.2.6
Together with this last rearrangedproduct, the ipso substitution derivative was also observed. Similar results were obtained in the PET reactions of 4d (R = t-Bu) with anions 2 and 3 under entrainment conditions with the enolate anion from cyclohexenone (5) or the tert-butoxide anion (6). From this novelrearrangement, and only under reductive conditions by PET reaction with anion 5, iodide 4d (R
Synthesis, Structure, and Chemoselective Reactivity ofN-(2-Iodylphenyl)acylamides: Hypervalent Iodine Reagents Bearing a Pseudo-Six-Membered Ring Scaffold
作者:Uladzimir Ladziata、Alexey Y. Koposov、Ka Y. Lo、Jeff Willging、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1002/anie.200502707
日期:2005.11.4
Anionic N-Fries Rearrangement of N-Alkyl-2-iodo Anilides Induced by Iodine−Magnesium Exchange: Application for Synthesis of Strained 1,2,3-Trisubstituted Indoles
作者:Fei Ding、Yongda Zhang、Bo Qu、Guisheng Li、Vittorio Farina、Bruce Z. Lu、Chris H. Senanayake
DOI:10.1021/ol7029905
日期:2008.3.1
A superior, mild, high-yielding one-pot process for rapid access to oxo anilides has been developed that involves three cascade reactions: iodine-magnesium exchange, regiospecific ortho N-Fries rearrangement, and in situ trapping of the formed aniline anion. Coupled with McMurry cyclization, the two-step process allows ready synthesis of strained 1,2,3-trisubstituted indoles regioselectively.