Etheric C–O Bond Hydrogenolysis Using a Tandem Lanthanide Triflate/Supported Palladium Nanoparticle Catalyst System
摘要:
Selective hydrogenolysis of cyclic and linear ether C-O bonds is accomplished by a tandem catalytic system consisting of lanthanide triflates and sinter-resistant supported palladium nanoparticles in an ionic liquid. The lanthanide triflates catalyze endothermic dehydroalkoxylation, while the palladium nanoparticles hydrogenate the resulting intermediate alkenols to afford saturated alkanols with high overall selectivity. The catalytic C-O hydrogenolysis is shown to have significant scope, and the C-O bond cleavage is turnover-limiting.
COLORED CURABLE COMPOSITION, COLOR FILTER AND METHOD OF PRODUCING THE SAME, AND DIPYRROMETHENE METAL COMPLEX COMPOUND AND TAUTOMER THEREOF
申请人:MIZUKAWA Yuki
公开号:US20120315579A1
公开(公告)日:2012-12-13
A colored curable composition is provided which has good developability, has excellent color purity, can be formed into a thin film, and has a high absorption coefficient. The colored curable composition includes at least one of specific dipyrromethene metal complex compounds and tautomers thereof. Also, a colored curable composition suitable for forming a color filter which is used in a liquid crystal display device or a solid-state imaging device, and a color filter using the colored curable composition and a method of producing the same are provided.
involves no molecular rearrangement, and which is also stereospecific, for the preparation of alkyl-aryl ethers and thioethers is described. Stable alkoxyphosphonium salts, R-O-P(NMe2)3 PF6-, have been prepared and treated with phenols and thiophenols, under basic conditions, to yield the corresponding alkyl-aryl ethers and thioethers respectively.
Chromatography-free product separation in the Mitsunobu reaction
作者:Anthony J. Proctor、Kevin Beautement、John M. Clough、David W. Knight、Yingfa Li
DOI:10.1016/j.tetlet.2006.05.070
日期:2006.7
Mitsunobu products can be isolated pure without column chromatography by first washing a solution of the crude reaction mixture in dichloromethane with 15% aqueous hydrogen peroxide followed by aqueous sodium sulfite. A final filtration through silica gel secures the pure Mitsunobu product. (c) 2006 Elsevier Ltd. All rights reserved.
Solvolysis of N-n-alkylacridiniums in phenol and carboxylic acids. Primary carbonium ions as possible intermediates
作者:Alan R. Katritzky、Azzahra M. El-Mowafy
DOI:10.1021/jo00139a025
日期:1982.8
Kozlikovskii, Ya. B.; Koshchii, V. A.; Butov, S. A., Journal of Organic Chemistry USSR (English Translation), 1990, vol. 26, # 1.2, p. 128 - 131
作者:Kozlikovskii, Ya. B.、Koshchii, V. A.、Butov, S. A.