35601-81-1Relevant articles and documents
Removal of flotation collector O-isopropyl-N-ethylthionocarbamate from wastewater
Dolenc, Darko,Kralj, Mojca Bavcon,Treb?e, Polonca,Wang, Zhe,Yao, Jun
, (2021/11/27)
Flotation collector O-isopropyl N-ethylthionocarbamate (IPETC) is widely used for separation of sulfide ores. Its removal from water by several oxidation processes was studied. Photocatalytic oxidation with air in the presence of iron salts, utilizing solar irradiation or artificial UV-A light is very efficient. Oxidation leads through the formation of O-isopropyl N-ethylcarbamate and several other reaction intermediates to total decomposition of organic compound in the final stage in 1 day. Similar results were obtained with a Fenton type oxidation with hydrogen peroxide and iron salts. Treatment with sodium hypochlorite yields mainly O-isopropyl N-ethylcarbamate. The formation of this compound in wastewaters can be of concern, since simple alkyl carbamates are cancer suspect agents.
Continuous Flow Synthesis of Urea-Containing Compound Libraries Based on the Piperidin-4-one Scaffold
Riesco-Domínguez, Alejandra,Blanco-Ania, Daniel,Rutjes, Floris P. J. T.
supporting information, p. 1312 - 1320 (2018/04/02)
The advantages of performing reactions in continuous flow vs. the classic batch processes render flow chemistry a suitable technique for library synthesis. Inspired by our recent work to create fluorine-containing nitrogen heterocycles and by the potentia
Nucleophilic Substitutions to Carbonic Acid Derivates. XII. Kinetics and Mechanism of the Reaction of N-Nitro-N-alkyl-urethanes with Primary Aliphatic Amines
Bacaloglu, R.,Prodan-Deac, Y.,Csunderlik, C.,Csomos, P.
, p. 10 - 20 (2007/10/02)
The aminolysis of N-alkyl-N-nitrourethanes takes place, as the kinetical studies demonstrate, by means of several consecutive steps.The nucleophilic attack of the amine (first step; reaction B), as well as the proton-transfere (second step; reaction C), are quick pre-equilibres, followed by the slow, rate-determining elimination of the nitramino-group (reaction D).During the deprotonation, an intermediate with two to the nitramino-group antiperiplanar orbitals is formed, providing the necessary mesomeric assistance of the elimination.