2142-64-5Relevant academic research and scientific papers
Synthesis, neutron structure, and reactivity of the bis(dihydrogen) complex RuH2(η2-H2)2(PCyp 3)2 stabilized by two tricyclopentylphosphines
Grellier, Mary,Vendier, Laure,Chaudret, Bruno,Albinati, Alberto,Rizzato, Silvia,Mason, Sax,Sabo-Etienne, Sylviane
, p. 17592 - 17593 (2005)
Treatment of Ru(η4-C8H12)(η6-C8H10) with 3 bar H2 in the presence of 2 equiv of tricyclopentylphosphine (PCyp3) in pentane resulted in the isolation of the new bis(dih
Selective Electrochemical Oxygenation of Alkylarenes to Carbonyls
Li, Xue,Bai, Fang,Liu, Chaogan,Ma, Xiaowei,Gu, Chengzhi,Dai, Bin
supporting information, p. 7445 - 7449 (2021/10/02)
An efficient electrochemical method for benzylic C(sp3)-H bond oxidation has been developed. A variety of methylarenes, methylheteroarenes, and benzylic (hetero)methylenes could be converted into the desired aryl aldehydes and aryl ketones in moderate to excellent yields in an undivided cell, using O2 as the oxygen source and lutidinium perchlorate as an electrolyte. On the basis of cyclic voltammetry studies, 18O labeling experiments, and radical trapping experiments, a possible single-electron transfer mechanism has been proposed for the electrooxidation reaction.
Investigations of the generality of quaternary ammonium salts as alkylating agents in direct C-H alkylation reactions: Solid alternatives for gaseous olefins
Sch?nbauer, David,Spettel, Manuel,Pollice, Robert,Pittenauer, Ernst,Schnürch, Michael
supporting information, p. 4024 - 4030 (2019/04/29)
C-H alkylation reactions using short chain olefins as alkylating agents could be operationally simplified on the lab scale by using quaternary ammonium salts as precursors for these gaseous reagents: Hofmann elimination delivers in situ the desired alkenes with the advantage that the alkene concentration in the liquid phase is high. In case a catalytic system did not tolerate the conditions for Hofmann elimination, a very simple spatial separation of both reactions, Hofmann elimination and direct alkylation, was achieved to circumvent possible side reactions or catalyst deactivation. Additionally, the truly catalytically active species of a rhodium(i) mediated alkylation reaction could be identified by using this approach.
Quaternary Ammonium Salts as Alkylating Reagents in C-H Activation Chemistry
Spettel, Manuel,Pollice, Robert,Schnürch, Michael
, p. 4287 - 4290 (2017/08/23)
A rhodium(I)-catalyzed alkylation reaction of benzylic amines via C(sp3)-H activation using quaternary ammonium salts as alkyl source is described. The reaction proceeds via in situ formation of an olefin via Hofmann elimination, which is the actual alkylating reagent. This represents an operationally simple method for substituting gaseous and liquid olefins with solid quaternary ammonium salts as alkylating reagents, which is transferable to other C-H activation protocols as well.
A general and efficient suzuki-miyaura cross-coupling protocol using weak base and no water: The essential mole of acetate
Wang, Bing,Sun, Hui-Xia,Sun, Zhi-Hua
experimental part, p. 3688 - 3692 (2009/12/03)
A weak base, CsOAc, promotes Suzuki-Miyaura cross-coupling and related Pd-catalyzed reactions under anhydrous conditions as effectively as stronger bases. Aryl triflates exhibit unusual reaction rates, which are comparable to that: of bromoarenes. A negle
PROCESS FOR THE PRODUCTION OF INTERMADIATES FOR THE PREPARATION OF TRICYCLIC BENZIMIDAZOLES
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Page/Page column 95, (2010/11/25)
The invention relates to a process for the synthesis of compounds of the formula 1-a and compounds of the formula 1-b. The compounds of the formula 1-a and the compounds of the formula 1-b, in which the substituents R1, R2, R3, and Ar have the meanings indicated in the description, are valuable intermediates for the preparation of pharmaceutically active compounds.
Unexpected cross-coupling reaction between o-chloroaryl ketones and organomanganese reagents
Cahiez, Gerard,Luart, Denis,Lecomte, Fabien
, p. 4395 - 4398 (2007/10/03)
(Chemical equation presented) Alkyl- and arylmanganese reagents react with o-chloro or o-bromoaryl ketones to give the substituted ketones in high yields. The cross-coupling reaction is performed under mild conditions (-60 to +40°C, 30 min to 4 h) and tak
NOVEL CB 1 RECEPTOUR INVERSE AGONISTS
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Page 126, (2008/06/13)
The present invention relates to compounds of formula (I) wherein R1, R2, R3, R4, R5, R6, m and X are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment . and/or prophylaxis of diseases which are associated with the modulation of CB 1 receptors.
Convenient preparation of mononuclear and dinuclear ruthenium hydride complexes for catalytic application
Busch, Stefan,Leitner, Walter
, p. 2305 - 2306 (2007/10/03)
A mixture of commercially available [Ru(cod)(η3-C4H7)2] and PCy3 reacts with H2 to give [RuH2(H2)2(PCy3)2] in high yields, whereas [Ru
