542-52-9Relevant articles and documents
New Synthetic Approach to Polyfluorinated Carbonates
Ezhikova, M. A.,Kodess, M. I.,Pestov, A. V.,Semenova, A. M.,Zapevalov, A. Ya.
, (2020)
Abstract: Transesterification of commercial titanium(IV) alkoxides with2,2,3,3-tetrafluoropropan-1-ol, followed by in situ transesterification of mixedtitanium(IV) alkoxides thus formed with diphenyl carbonate, afforded alkyl2,2,3,3-tetrafluoropropyl carb
Microwave-Assisted Aminoalkylation of Phenols via Mustard Carbonate Analogues
Annatelli, Mattia,Aricò, Fabio,Castellano, Sabrina,Milite, Ciro,Trapasso, Giacomo,Viviano, Monica
supporting information, (2022/03/17)
microwave-assisted chlorine-free direct phenol substitution is presented, which is indicated as a key green chemistry research area for pharmaceuticals manufacturers. The reaction of -aminocarbonates (mustard carbonates) with several substituted phenols in the presence of a polar solvent (acetonitrile or butanol) led to the related aminoalkylated products via the anchimeric assistance of the nitrogen incorporated in the organic carbonate backbone. The aminoalkylation required short reaction time (7 min) and the related products were isolated in high yields (>90%) via quick liquid-liquid extraction or column chromatography depending on the solvent employed. Furthermore, microwave irradiation also promoted the one-pot aminoalkylation of phenol in excellent yield. In this approach a -aminoalcohol was reacted with phenol in the presence of diethyl carbonate, used for the in situ formation -aminocarbonate, key intermediate in the consequent anchimerically driven alkylation. The resulting product, namely N,N-dimethyl- 2-phenoxyethanamine, was isolated as pure in almost quantitative yield.
CATALYST AND PRECURSOR THEREOF AND METHOD OF FORMING DIALKYL CARBONATE
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Paragraph 0033-0035; 0037-0038, (2021/06/22)
A method of forming dialkyl carbonate is provided, which includes introducing carbon dioxide into a catalyst to form dialkyl carbonate, wherein the catalyst is formed by activating a catalyst precursor using alcohol, wherein alcohol is R3—OH, and R3 is C1-12 alkyl group or C5-12 aryl or heteroaryl group. The catalyst precursor is formed by reacting Sn(R1)2(L)2 and Ti(OR2)4, and Sn(R1)2(L)2 and Ti(OR2)4 have a molar ratio of 1:2 to 2:1. R1 is C1-10 alkyl group, R2 is H or C1-12 alkyl group, and L is O—(C═O)—R5, and R5 is C1-12 alkyl group. The dialkyl carbonate is
METHOD FOR PRODUCING CARBONATE ESTERS, AND CATALYTIC STRUCTURE FOR PRODUCING CARBONATE ESTERS
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Paragraph 0148-0149; 0179-0180, (2021/09/17)
Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yielded when a catalytic structure constituted by a sufficient quantity of a cerium-oxide-containing solid catalyst supported on a substrate is used. The method for producing carbonate esters includes reacting a monohydric alcohol and carbon dioxide in the presence of a catalytic structure and a hydrating agent. The catalytic structure includes a substrate and a catalytic layer that is formed on at least a portion of the surface of the substrate and contains a solid catalyst and an inorganic binder. The solid catalyst contains cerium oxide. The supported quantity of the solid catalyst is 15 g/m2 to 200 g/m2, inclusive. The inorganic binder contains silica and/or alumina.