Metallaphotoredox-Catalyzed Cross-Electrophile C<sub>sp</sub><sup>3</sup>–C<sub>sp</sub><sup>3</sup> Coupling of Aliphatic Bromides
作者:Russell T. Smith、Xiaheng Zhang、Juan A. Rincón、Javier Agejas、Carlos Mateos、Mario Barberis、Susana García-Cerrada、Oscar de Frutos、David W. C. MacMillan
DOI:10.1021/jacs.8b12025
日期:2018.12.19
pharmaceutically relevant aliphatic structures has been established via metallaphotoredox catalysis. Herein, we report that tris(trimethylsilyl)silanol can be employed as an effective halogen abstraction reagent that, in combination with photoredox and nickel catalysis, allows a generic approach to Csp3-Csp3 cross-electrophile coupling. In this study, we demonstrate that a variety of aliphatic drug-like groups
Stereoretentive Copper(II)-Catalyzed Ritter Reactions of Secondary Cycloalkanols
作者:Mohammed H. Al-huniti、Salvatore D. Lepore
DOI:10.1002/adsc.201300233
日期:2013.10.11
A Ritter-like coupling reaction of cyclic alcohols and both aryl and alkyl nitriles to form amides catalyzed by copper (II) triflate is described. These reactions proceed in good yields under mild and often solvent-free conditions. With 2- and 3-substituted cycloalkanols, amide products are formed with near complete retention of configuration. This is likely due to fast nucleophilic capture of a non-planar
Fragmentierung von ?-Aminoketoximen. IV. Teil Der Einfluss sterischer. Faktoren Fragmentierungsreaktion, 17. Mitteilung
作者:C. A. Grob、A. Sieber
DOI:10.1002/hlca.19670500838
日期:——
(N-Methyl-2-piperidyl)phenyl ketoxime acetate(10b) and (N-methyl-2-pyrrolidinyl)-phenyl ketoxime acetate (13b) undergo quantitative fragmentation in 80% ethanol to yield benzonitrile and the cyclic imonium salts 11 and 14. Their reaction rates are approx. 107 and 108, respectively, as high as those calculated for the homomorphous compounds, viz. 2-methylcyclohexylphenyl ketoxime acetate (12b) and