625-48-9Relevant articles and documents
Formation and Out-of-Equilibrium, High/Low State Switching of a Nitroaldol Dynamer in Neutral Aqueous Media
Elofsson, Ulla,Karalius, Antanas,Kravchenko, Oleksandr,Ramstr?m, Olof,Szabó, Zoltán,Yan, Mingdi,Zhang, Yang
supporting information, p. 3434 - 3438 (2020/02/05)
The nitroaldol reaction is demonstrated as an efficient dynamic covalent reaction in phosphate buffers at neutral pH. Rapid equilibration was recorded with pyridine-based aldehydes, and dynamic oligomerization could be achieved, leading to nitroaldol dynamers of up to 17 repeating units. The dynamers were applied in a coherent stimuli-responsive molecular system in which larger dynamers transiently existed out-of-equilibrium in a neutral aqueous system rich in formaldehyde, controlled by nitromethane.
Method for preparing taurine and co-producing bicarbonate
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Paragraph 0039; 0040, (2016/10/08)
The invention discloses a method for preparing taurine and co-producing bicarbonate. The method comprises the step of leading carbon dioxide gas or adding a carbon dioxide water solution to an amino ethyl sulfonate water solution of alkali metal or ammonium to regulate a pH value so as to obtain the taurine and the bicarbonate. The method can replace an existing taurine preparation method of using sulfuric acid or sulfur dioxide to regulate the pH value, meanwhile can treat boiler exhaust gas, turns the carbon dioxide in the exhaust gas into wealth, co-produces the bicarbonate and is a safe, environmentally-friendly and energy-saving method for producing the taurine and co-producing the bicarbonate.
Metal-free ring expansion of indoles with nitroalkenes: A simple, modular approach to 3-substituted 2-quinolones
Aksenov, Alexander V.,Smirnov, Alexander N.,Aksenov, Nicolai A.,Aksenova, Inna V.,Matheny, Jonathon P.,Rubin, Michael
, p. 8647 - 8656 (2015/03/03)
3-Substituted 2-quinolones are obtained via a novel metal-free transannulation reaction of 2-nitroolefins with 2-substituted indoles in polyphosphoric acid. This acid-mediated cascade transformation operates via the ANRORC (Addition of Nucleophile, Ring Opening, and Ring Closure) mechanism and can be used in combination with the Fisher indole synthesis to offer a practical three-component hetero-annulation approach to 2-quinolones from arylhydrazines, 2-nitroalkenes, and acetophenone. An alternative entry to this chemistry employing the alkylation of electron-rich arenes and hetarenes with 1-(2-indolyl)-2-nitroalkene has also been demonstrated.