15417-65-9Relevant academic research and scientific papers
Sustainable Catalytic Synthesis of Diethyl Carbonate
Putro, Wahyu S.,Ikeda, Akira,Shigeyasu, Shinji,Hamura, Satoshi,Matsumoto, Seiji,Lee, Vladimir Ya.,Choi, Jun-Chul,Fukaya, Norihisa
, p. 842 - 846 (2020/12/07)
New sustainable approaches should be developed to overcome equilibrium limitation of dialkyl carbonate synthesis from CO2 and alcohols. Using tetraethyl orthosilicate (TEOS) and CO2 with Zr catalysts, we report the first example of sustainable catalytic synthesis of diethyl carbonate (DEC). The disiloxane byproduct can be reverted to TEOS. Under the same conditions, DEC can be synthesized using a wide range of alkoxysilane substrates by investigating the effects of the number of ethoxy substituent in alkoxysilane substrates, alkyl chain, and unsaturated moiety on the fundamental property of this reaction. Mechanistic insights obtained by kinetic studies, labeling experiments, and spectroscopic investigations reveal that DEC is generated via nucleophilic ethoxylation of a CO2-inserted Zr catalyst and catalyst regeneration by TEOS. The unprecedented transformation offers a new approach toward a cleaner route for DEC synthesis using recyclable alkoxysilane.
Organic silicon compound
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Paragraph 0031; 0033; 0034, (2017/02/28)
PROBLEM TO BE SOLVED: To provide an organic silicon compound useful for applications as a terminal alkoxysilylating agent or hardener of organopolysiloxane such as α,ω-dihydroxy polydimethylsiloxane, or a surface treating agent of silica, storage stabilizer of dealcoholization type RTV as a scavenger such as alcohol or the like. SOLUTION: There is provided diketene silyl acetal-type compound represented by the following formula (1). (1), where R, R1 and R2 are a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms and which may be same or different and a represents an integer of 0 to 2. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
