Factors Influencing the Regioselectivity of the Oxidation of Asymmetric Secondary Amines with Singlet Oxygen
作者:Dmitry B. Ushakov、Matthew B. Plutschack、Kerry Gilmore、Peter H. Seeberger
DOI:10.1002/chem.201500121
日期:2015.4.20
functionalization of amines. However, there are still several mechanistic uncertainties, particularly the factors governing the regioselectivity of the oxidation of asymmetric secondary amines and the oxidation rates of mixed primary amines. Herein, it is reported that singlet‐oxygen‐mediated oxidation of 1° and 2° amines is sensitive to the strength of the α‐CH bond and steric factors. Estimation of the
The position of an anion above an electron-deficient arene can be controlled by the geometry of appended directing groups. Here a series of ammonium substituted pentafluorophenyl derivatives is investigated. The presented results are one step on the way to find the ideal structural features for an effective and superior receptor for anion–π studies.
Biomimetic Reductive Amination of Fluoro Aldehydes and Ketones <i>via</i> [1,3]-Proton Shift Reaction.<sup>1</sup> Scope and Limitations
作者:Taizo Ono、Valery P. Kukhar、Vadim A. Soloshonok
DOI:10.1021/jo960503g
日期:1996.1.1
proceed essentially (>98%) intramolecularly with isotope exchange experiments. High chemical yields, the simplicity of the experimental procedure, and the low cost of all reagents employed make this biomimetic transamination of fluorocarbonyl compounds a practical method for preparing fluorine-containing amines of biological interest.
Biomimetic reductive amination under the continuous-flow reaction conditions
作者:Vadim A. Soloshonok、Hector T. Catt、Taizo Ono
DOI:10.1016/j.jfluchem.2009.10.013
日期:2010.2
account of continuous-flow reaction conditions for biomimeticreductiveamination of fluorinated carbonyl compounds to corresponding amines and amino acids of biomedical importance. We demonstrate that simple silica-adsorbed DBU can be used as efficient catalysts for on-column 1,3-proton shift reaction, a key transformation in the biomimeticreductiveamination process. This new on-column process features