23391-99-3Relevant academic research and scientific papers
Photochemical Transformations with Iodine Azide after Release from an Ion-Exchange Resin
Dr?ger, Gerald,K?sel, Teresa,Kirschning, Andreas,Schulz, G?ran
supporting information, p. 12376 - 12380 (2020/05/08)
This report discloses the photochemical homolytic cleavage of iodine azide after its formation following release from polymer-bound bisazido iodate(I) anions. A series of radical reactions are reported including the 1,2-functionlization of alkenes and the unprecedented chemoselective oxidation of secondary alcohols in the presence of primary alcohols.
A high performance oxidation method for secondary alcohols by inductive activation of TEMPO in combination with pyridine-bromine complexes
Mei, Zhen-Wu,Omote, Takumi,Mansour, Mounir,Kawafuchi, Hiroyuki,Takaguchi, Yutaka,Jutand, Anny,Tsuboi, Sadao,Inokuchi, Tsutomu
experimental part, p. 10761 - 10766 (2009/04/11)
A new TEMPO-mediated catalytic oxidation method in combination with Py·HBr3 (stoichiometric) is developed for oxidation of secondary alcohols to the corresponding ketones. The performance of this oxidizing system is better compared with that of TEMPO method combined with R4NBr3. Poly(4-vinylpyridine)·HBr3 can be used in place of Py·HBr3. The electron-withdrawing substituent at the C-4 position of TEMPO increases the reactivity of TEMPO significantly in the oxidation of electron-deficient alcohols such as polyhaloalkylmethanols. Inductive effect of the substituent of TEMPO is discussed through the characterization of the redox potential of N-O radical by cyclic voltammetry.
Process for the preparation of cyclohexanones
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, (2008/06/13)
The invention relates to a process for the preparation of cyclohexanones from the corresponding phenols by partial hydrogenation, characterized in that the reaction mixture obtained by means of the hydrogenation is treated with sulfonating agents before the isolation of the cyclohexanone.
Oligo(cyclohexylidene) oximes and derivatives as probe molecules for long-range substituent effects on13C NMR chemical shifts
Hoogesteger, Frans J.,Grove, David M.,Jenneskens, Leonardas W.,De Bruin, Theodorus J. M.,Jansen, Bart A. J.
, p. 2327 - 2334 (2007/10/03)
For a series of rodlike aliphatic oximes (1-4) the influence of the oxime substituent on the 13C NMR chemical shifts has been studied. Various 2D NMR techniques were applied for the unequivocal assignment of their 1H and 13C resonances. For bicyclohexylidene oximes 1-2 long-range substituent effects on the 13C NMR chemical shifts of aliphatic carbon atoms of the six-membered rings due to the presence of the oxime group are discernible up to positions six carbon-carbon bonds distant from the iminyl carbon! The 13C NMR data obtained for bicyclohexyl oximes 3-4 reveal that in this series the effect is limited to carbon atoms which are five bonds distant from the iminyl carbon. The observed differences between the two series is attributed to the presence of an olefinic double bond in 1-2, whch becomes polarized by the electric field of the oxime substituent.
