100846-24-0Relevant articles and documents
Copper-catalyzed trifluoromethylation of aryl boronic acids using a CF 3+ reagent
Xu, Jun,Luo, Dong-Fen,Xiao, Bin,Liu, Zhao-Jing,Gong, Tian-Jun,Fu, Yao,Liu, Lei
, p. 4300 - 4302 (2011)
A copper-catalyzed process for trifluoromethylation of aryl, heteroaryl, and vinyl boronic acids has been developed. The reaction is conducted under mild conditions and shows tolerance to moisture and a variety of functional groups.
Sandmeyer trifluoromethylation of arenediazonium tetrafluoroborates
Danoun, Grégory,Bayarmagnai, Bilguun,Grünberg, Matthias F.,Goo?en, Lukas J.
, p. 7972 - 7975 (2013)
Copper capabilities: Diazonium salts are converted into the corresponding trifluoromethyl derivatives in the presence of a trifluoromethyl-copper complex generated in situ from CuSCN and the inexpensive, easy-to-use trifluoromethylating reagent Me3Si-CF3 (see scheme). This Sandmeyer-type reaction allows the straightforward synthesis of trifluoromethylated arenes and heteroarenes from the corresponding amines. Copyright
Optimizing ligand structure for low-loading and fast catalysis for alkynyl-alcohol and-amine cyclization
Stubbs, James M.,Bridge, Benjamin J.,Blacquiere, Johanna M.
, p. 7928 - 7937 (2019/06/13)
A series of [Ru(Cp/Cp?)(PR2NR′2)(MeCN)]PF6 complexes were prepared, in which the steric and electronic properties of the primary coordination sphere were varied (R = Ph, t-Bu, Bn; and Cp vs. Cp?). These complexes were catalytically active in the cyclization of alkyne substrates with an intramolecular nucleophile (amine or alcohol) to produce 5-and 6-membered heterocycles. The effect of the 1° coordination sphere structure on catalyst performance was evaluated. Steric bulk around the metal centre was a key feature to achieve rapid catalysis at low temperatures. The catalyst [Ru(Cp)(Pt-Bu2NPh2)(MeCN)]PF6 gave a turnover number that was >1 order of magnitude more active than previous catalysts in the cyclization of the benchmark substrate 2-ethynylaniline. This catalyst is tolerant of a diversity of functional groups and is competent at the formation of various substituted indoles.
Hydrophobic Metal Halide Perovskites for Visible-Light Photoredox C?C Bond Cleavage and Dehydrogenation Catalysis
Hong, Zonghan,Chong, Wee Kiang,Ng, Andrew Yun Ru,Li, Mingjie,Ganguly, Rakesh,Sum, Tze Chien,Soo, Han Sen
, p. 3456 - 3460 (2019/02/13)
Two-dimensional lead and tin halide perovskites were prepared by intercalating the long alkyl group 1-hexadecylammonium (HDA) between the inorganic layers. We observed visible-light absorption, narrow-band photoluminescence, and nanosecond photoexcited lifetimes in these perovskites. Owing to their hydrophobicity and stability even in humid air, we applied these perovskites in the decarboxylation and dehydrogenation of indoline-2-carboxylic acids. (HDA)2PbI4 or (HDA)2SnI4 were investigated as photoredox catalysts for these reactions, and quantitative conversion and high yields were observed with the former.
Palladium/Phosphorus-Doped Porous Organic Polymer as Recyclable Chemoselective and Efficient Hydrogenation Catalyst under Ambient Conditions
Ding, Zong-Cang,Li, Cun-Yao,Chen, Jun-Jia,Zeng, Jia-Hao,Tang, Hai-Tao,Ding, Yun-Jie,Zhan, Zhuang-Ping
, p. 2280 - 2287 (2017/07/07)
A new type of phosphorus-doped porous organic polymer (POP) has been readily synthesized through a Heck reaction, which could be used not only as a support but also a ligand for palladium nanoparticles. The dual-functional material supported palladium nanocatalyst was used for the efficient and chemoselective hydrogenation of varieties of nitroarenes and α,β-unsaturated compounds, as well as for the synthesis of indoles from 2-nitrophenylacetonitrile under 1 atm hydrogen in green solvents at room temperature. No obvious aggregation and loss of catalytic activity of the new nanocatalyst were observed after 10 runs in the reaction. (Figure presented.).
Active and Recyclable Catalytic Synthesis of Indoles by Reductive Cyclization of 2-(2-Nitroaryl)acetonitriles in the Presence of Co-Rh Heterobimetallic Nanoparticles with Atmospheric Hydrogen under Mild Conditions
Choi, Isaac,Chung, Hyunho,Park, Jang Won,Chung, Young Keun
supporting information, p. 5508 - 5511 (2016/11/17)
A cobalt-rhodium heterobimetallic nanoparticle-catalyzed reductive cyclization of 2-(2-nitroaryl)acetonitriles to indoles has been achieved. The tandem reaction proceeds without any additives under the mild conditions (1 atm H2 and 25 °C). This procedure could be scaled up to the gram scale. The catalytic system is significantly stable under these reaction conditions and could be reused more than ten times without loss of catalytic activity.
HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE
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Page/Page column 197-198, (2011/10/05)
The present invention relates to compounds and methods which may be useful as inhibitors of H1R and/or H4R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.
HETEROCYCLIC INHIBITORS OF HISTAMINE RECEPTORS FOR THE TREATMENT OF DISEASE
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Page/Page column 92, (2010/06/11)
The present invention relates to compounds and methods which may be useful as inhibitors of H1R and/or H4R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.
Gold-catalyzed intramolecular hydroamination of terminal alkynes in aqueous media: efficient and regioselective synthesis of indole-1-carboxamides
Ye, Deju,Wang, Jinfang,Zhang, Xu,Zhou, Yu,Ding, Xiao,Feng, Enguang,Sun, Haifeng,Liu, Guannan,Jiang, Hualiang,Liu, Hong
experimental part, p. 1201 - 1208 (2010/04/26)
Using [Au(PPh3)]Cl/Ag2CO3-catalyzed 5-endo-dig cyclization in water under microwave irradiation, we developed a fast and green route to prepare indole-1-carboxamides from N′-substituted N-(2-alkynylphenyl)ureas. The descri
A simple two-step synthesis of indoles
Walkington, Andrew,Gray, Matthew,Hossner, Frank,Kitteringham, John,Voyle, Martyn
, p. 2229 - 2233 (2007/10/03)
A two-step synthesis of indoles that is suitable for use on a large scale is described. The general applicability of this methodology has also been briefly explored.