1515-83-9Relevant articles and documents
Different Patterns of Mutagenicity of Arenediazonium Ions in V79 Cells and Salmonella typhimurium TA102: Evidence for Different Mechanisms of Action
Lawson, Terence,Gannett, Peter M.,Yau, Wai-Ming,Dalal, Nar S.,Toth, Bela
, p. 2627 - 2635 (1995)
The edible mushroom Agaricus bisporus contains several arylhydrazines and arenediazonium ions that are genotoxins.The mechanism whereby arylhydrazines and arenediazonium ions are genotoxic is unknown and may be due to the arenediazonium ion itself or to a
Methoxymethylation and benzyloxymethylation of aryl bromides
Panda, Biswajit
, p. 981 - 985 (2020/06/26)
The methoxymethylation and benzyloxymethylation of aryl bromides methodology was reported here. The transition metal free, high yielding one pot procedure will be useful for synthetic community.
Auto-Tandem Catalysis with Frustrated Lewis Pairs for Reductive Etherification of Aldehydes and Ketones
Bakos, Mária,Gy?m?re, ádám,Domján, Attila,Soós, Tibor
supporting information, p. 5217 - 5221 (2017/04/27)
Herein we report that a single frustrated Lewis pair (FLP) catalyst can promote the reductive etherification of aldehydes and ketones. The reaction does not require an exogenous acid catalyst, but the combined action of FLP on H2, R-OH or H2O generates the required Br?nsted acid in a reversible, “turn on” manner. The method is not only a complementary metal-free reductive etherification, but also a niche procedure for ethers that would be either synthetically inconvenient or even intractable to access by alternative synthetic protocols.
New method for the synthesis of benzyl alkyl ethers mediated by FeSO 4
Joshi, Girdhar,Adimurthy, Subbarayappa
experimental part, p. 720 - 728 (2011/03/22)
The synthesis of benzyl alkyl ethers from benzyl bromides and alcohols using FeSO4 as a recoverable and reusable mediator has been described without use of base and cosolvent under mild conditions.
A kinetic model for water reactivity (avoiding activities) for hydrolyses in aqueous mixtures - Selectivities for solvolyses of 4-substituted benzyl derivatives in alcohol-water mixtures
Bentley, T. William,Koo, In Sun,Choi, Hojune,Llewellyn, Gareth
, p. 251 - 256 (2008/09/20)
For solvolyses of various benzyl substrates in ethanol-water (EW) and methanol-water (MW) mixtures, product selectivities (S) are reported for chlorides at 75°C defined as follows using molar concentrations: S= ([ether product]/[alcohol product]) × ([water]/[alcohol solvent]). The results support earlier evidence that solvolyses of 4-nitrobenzyl substrates are S N2 processes, which are not susceptible to mechanistic changes over the whole range of solvents from water to alcohol. S values at 25 and/or 45°C in EW and MW, and additional kinetic data including kinetic solvent isotope effects (KSIE) are reported for solvolyses of 4-nitrobenzyl mesylate and tosylate. A kinetic model, explaining both rates and product, is proposed; a general medium effect due to solvent polarity is combined in one parameter with solvent effects on the nucleophilicity of the water and alcohol molecules acting as nucleophiles in SN2 reactions. According to this model, as alcohol is added to water the rate of reaction decreases due to a decrease in solvent polarity, but the nucleophilicity of water increases relative to alcohol. The availability of experimental rate and product data over the whole range of solvent compositions from alcohol to water, reveals limitations of alternative approaches using activities. Copyright
Fluorescent perylene diimide rotaxanes: Spectroscopic signatures of wheel-chromophore interactions
Baggerman, Jacob,Jagesar, Dhiredj C.,Vallee, Renaud A. L.,Hofkens, Johan,De Schryver, Frans C.,Schelhase, Franke,Voegtle, Fritz,Brouwer, Albert M.
, p. 1291 - 1299 (2007/10/03)
[2]- and [3]-rotaxanes with a tetraphenoxy perylene diimide core were synthesized. Hydrogen bonding between the wheel and the imide changes the optical properties of the perylene chromophore: the absorption and fluorescence spectra are red-shifted. The decay times of the rotaxanes are shorter in comparison with that of the axle. Single molecule fluorescence measurements reveal relatively narrow distributions of emission maxima and decay times. The averages are in agreement with ensemble measurements. The observed red shifts make the perylene diimide a suitable chromophore for sensing the position of the wheel on the axle.
Iodine catalyzed selective O-alkylation of alcohols with orthoesters
Kumar,Anjaneyulu,Joyasawal, Sipak,Pawan Chakravarthy,Naveen Kumar,Yadav
, p. 189 - 192 (2008/02/13)
In the present communication O-alkylation of a number of allylic and benzylic alcohols has been described.
HYDROXYMETHYLBORON COMPOUNDS
-
Page/Page column 35, (2010/11/29)
The present invention provides compounds which are useful as safe substitutes for the organotin reagent used in coupling reaction for the oxymethylation of aromatic rings, such as alkoxymethylation or hydroxymethylation, with a palladium catalyst and which can dispense with chromatographic purification with silica gel in the production and are suitable for mass production; and compounds applicable even to the oxymethylation of aromatic ring substrates which do not permit coupling reaction by conventional technique or have low reactivity.
Aryl triazines as LPAAT-SS inhibitors and uses thereof
-
, (2008/06/13)
The invention relates to aryl triazines and uses thereof, including to inhibit lysophosphatidic acid acyltransferase β (LPAAT-β) activity and/or proliferation of cells such as tumor cells.
Correlation of the rates of solvolysis of (arylmethyl)methylphenyl-sulfonium ions
Kevill, Dennis N.,Ismail, Norsaadah H.J.
, p. 1865 - 1868 (2007/10/03)
The specific rates of solvolysis of the benzylmethylphenylsulfonium ion (prepared as the trifluoromethanesulfonate salt) and five benzylic ring-substituted derivatives can be satisfactorily correlated using NT solvent nucleophilicity values. Addition of a secondary term, governed by the aromatic ring parameter (I), shows the sensitivities towards changes in this parameter to fall and those towards changes in NT to rise with increasing electron-withdrawing ability of the substituent. The Hammett ρ values with electron-withdrawing substituents (based on ρ+ values) vary from -0.9 in 95% acetone to -1.8 in 97% 2,2,2-trifluoroethanol. These Grunwald-Winstein and Hammett analyses are compared to those previously reported, with essentially the same solvents and substituents, for solvolyses of arylmethyl p-toluenesulfonates.