1249102-62-2Relevant academic research and scientific papers
Nickel-Catalyzed, Reductive C(sp3)?Si Cross-Coupling of α-Cyano Alkyl Electrophiles and Chlorosilanes
Oestreich, Martin,Zhang, Liangliang
, p. 18587 - 18590 (2021)
A nickel/zinc-catalyzed cross-electrophile coupling of alkyl electrophiles activated by an α-cyano group and chlorosilanes is reported. Elemental zinc is the stoichiometric reductant in this reductive coupling process. By this, a C(sp3)?Si bond can be formed starting from two electrophilic reactants whereas previous methods rely on the combination of carbon nucleophiles and silicon electrophiles or vice versa.
SULFONYL-SUBSTITUTED BICYCLIC COMPOUND WHICH ACTS AS ROR INHIBITOR
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Paragraph 0184; 0186, (2020/08/16)
Provided is a sulfonyl-substituted bicyclic compound (A) which acts as a RORγ inhibitor, said compound has good RORγ inhibitory activity and is expected to be used for treating diseases mediated by a RORγ receptor in mammals.
Copper-Catalyzed Substitution of α-Triflyloxy Nitriles and Esters with Silicon Nucleophiles under Inversion of the Configuration
Scharfbier, Jonas,Hazrati, Hamideh,Irran, Elisabeth,Oestreich, Martin
supporting information, p. 6562 - 6565 (2017/12/26)
A copper-catalyzed nucleophilic displacement of α-triflyloxy nitriles and esters with silicon nucleophiles allows for the stereospecific generation of highly enantioenriched α-silylated carboxyl compounds. The enantioselective synthesis of α-silylated nitriles is unprecedented. The catalytic system exhibits good functional group tolerance. The stereochemical course of the substitution is shown to proceed with inversion of the configuration. The new reaction is an addition to the still limited number of methods for catalytic C(sp3)-Si cross-coupling.
Catalytic asymmetric synthesis of secondary nitriles via stereoconvergent negishi arylations and alkenylations of racemic α-bromonitriles
Choi, Junwon,Fu, Gregory C.
, p. 9102 - 9105 (2012/07/13)
The first method for the stereoconvergent cross-coupling of racemic α-halonitriles is described, specifically, nickel-catalyzed Negishi arylations and alkenylations that furnish an array of enantioenriched α-arylnitriles and allylic nitriles, respectively. Noteworthy features of this investigation include: the highly enantioselective synthesis of α-alkyl-α-aryl nitriles that bear secondary α-alkyl substituents; the first examples of the use of alkenylzinc reagents in stereoconvergent Negishi reactions of alkyl electrophiles; demonstration of the utility of a new family of ligands for asymmetric Negishi cross-couplings (a bidentate bis(oxazoline), rather than a tridentate pybox); in the case of arylzinc reagents, carbon-carbon bond formation at a remarkably low temperature (-78 °C), the lowest reported to date for an enantioselective cross-coupling of an alkyl electrophile; a mechanistic dichotomy between Negishi reactions of an unactivated versus an activated secondary alkyl bromide.
