60416-24-2Relevant academic research and scientific papers
Photoredox/Nickel Dual Catalysis for the C(sp3)–C(sp3) Cross-Coupling of Alkylsilicates with Alkyl Halides
Lévêque, Christophe,Corcé, Vincent,Chenneberg, Ludwig,Ollivier, Cyril,Fensterbank, Louis
supporting information, p. 2118 - 2121 (2017/04/24)
Alkylsilicates were engaged under photoredox/nickel dual catalysis conditions with alkyl halides for the first time. The C(sp3)–C(sp3) cross-coupling products were obtained in moderate yields and were accompanied by the homocoupling
Novel access to carbonyl and acetylated compounds: The role of the tetra-: N -butylammonium bromide/sodium nitrite catalyst
Sheykhan, Mehdi,Moafi, Hadi Fallah,Abbasnia, Masoumeh
, p. 51347 - 51355 (2016/06/09)
A novel aerobic oxidation of alcohols without the use of any oxidants was developed. An equimolar catalytic mixture of tetra-n-butylammonium bromide and sodium nitrite catalyzes the aerobic selective oxidation of benzylic alcohols under oxidant-free, base-free and metal-free conditions. The mild reaction conditions allow oxidation of a wide range of benzylic alcohols, chemo-selectively to their carbonyl compounds (68-93% isolated yields). More importantly, high selectivity among different kinds of alcohols (aromatic vs. aliphatic alcohols, primary vs. secondary alcohols as well as alcohols having neutral rings vs. electron-deficient rings) is available by this approach. The method surprisingly switched over to be an efficient acetylation approach in the case of aliphatic alcohols without the use of any transition metal, phosphorous or other toxic reagents or any need for using toxic acyl halides, sulfonyl halides, anhydrides, etc. by the use of only acetic acid as a reagent.
Transition metal nanoparticles stabilized by ammonium salts of hyperbranched polystyrene: effect of metals on catalysis of the biphasic hydrogenation of alkenes and arenes
Gao, Lei,Kojima, Keisuke,Nagashima, Hideo
, p. 6414 - 6423 (2015/08/18)
Abstract Hyperbranched polystyrene bearing ammonium salts (HPS-NR3+Cl-) behaves as an excellent stabilizer of ruthenium, rhodium, iridium, palladium, and platinum nanoparticles from 1 to 3 nm in size uniformly dispersed in the polymer matrix. The catalytic performance of the resulting metal-polymer composites, M@HPS-NR3+Cl-, is dependent on the metal. This dependence was investigated by assessing the hydrogenation of alkenes and arenes. The utility of M@HPS-NR3+Cl- as reusable catalysts in aqueous/organic biphasic systems was demonstrated by examining the catalysis of the hydrogenation of aromatic compounds containing various functional groups by Ru@HPS-NR3+Cl-.
Highly enantioselective Rh-catalysed hydrogenation of 1-alkyl vinyl esters using phosphine-phosphoramidite ligands
Konrad, Tina Maria,Schmitz, Pascal,Leitner, Walter,Francio, Giancarlo
supporting information, p. 13299 - 13303 (2013/10/08)
MatPhos, a good mate for hard tasks: The asymmetric hydrogenation of 1-alkyl vinyl esters, thwarted so far by mediocre ee values and low activities, can now be achieved with MatPhos/Rh catalysts with ee values of 96-99 % for a variety of substrates at low catalyst loadings (0.1-1 mol %) and under mild conditions (5-20 bar H2, room temperature). After hydrolysis, the corresponding chiral secondary alkyl alcohols can be obtained in high enantiopurities providing a general and practical route to this important product class. Copyright
Effects of Substrate Structure on Lipase-Catalyzed Transesterification of ω-Substituted 1-Alkanols in Organic Solvents.
Nakamura, Kaoru,Kawasaki, Masashi,Ohno, Atsuyoshi
, p. 3053 - 3056 (2007/10/02)
Lipase-catalyzed transesterification of ω-phenyl-1-alkanols with vinyl acetate in organic solvents have been investigated.Benzyl alcohol is the most reactive substrate among those studied.It is proposed that a lipase from Pseudomonas cepacia (PCL) has a domain to attract an aromatic moiety of a substrate.
