Selective Synthesis of Secondary and Tertiary Amines by Reductive
<i>N‐</i>
Alkylation of Nitriles and
<i>N‐</i>
Alkylation of Amines and Ammonium Formate Catalyzed by Ruthenium Complex
作者:Iryna D. Alshakova、Georgii I. Nikonov
DOI:10.1002/cctc.201900561
日期:2019.11.7
syntheses of secondary and tertiary amines via reductive N‐alkylation of nitriles and N‐alkylation of primary amines is proposed. Isomeric complexes 8 catalyze transfer hydrogenation and N‐alkylation of nitriles in ethanol to give secondaryamines. Unsymmetrical secondaryamines can be produced by N‐alkylation of primary amines with alcohols via the borrowing hydrogen methodology. Aliphatic amines were obtained
Highly economical and direct amination of sp<sup>3</sup> carbon using low-cost nickel pincer catalyst
作者:Andrew Brandt、Ambar B. RanguMagar、Peter Szwedo、Hunter A. Wayland、Charlette M. Parnell、Pradip Munshi、Anindya Ghosh
DOI:10.1039/d0ra09639c
日期:——
first time, we report the use of an amide-based nickel pincer catalyst (1) for direct alkylation of amines viaactivation of sp3 C-H bonds. The reaction was accomplished using a 0.2 mol% catalyst and no additional activatingagents other than the base. Upon optimization, it was determined that the ideal reaction conditions involved solvent dimethyl sulfoxide at 110 °C for 3 h. The catalyst demonstrated
<i>cine</i>-Silylative Ring-Opening of α-Methyl Azacycles Enabled by the Silylium-Induced C–N Bond Cleavage
作者:Jianbo Zhang、Sukbok Chang
DOI:10.1021/jacs.0c05241
日期:2020.7.22
exo-dehydrogenation of alicyclic amine, (ii) hydrosilylation of resultant enamine, (iii) silylium-induced cis-β-amino elimination to open the ring skeleton, and (iv) hydrosilylation of terminal olefin. The present borane catalysis also works efficiently for the C-Nbondcleavage of acyclic tertiary amines. On the basis of experimental and computational studies, the silicon atom was elucidated to play a pivotal
One-pot, chemoselective synthesis of secondary amines from aryl nitriles using a PdPt–Fe<sub>3</sub>O<sub>4</sub> nanoparticle catalyst
作者:Jin Hee Cho、Sangmoon Byun、Ahra Cho、B. Moon Kim
DOI:10.1039/d0cy00630k
日期:——
unsymmetrical secondary amines under mild conditions. However, aryl nitriles containing an electron-donating substituent were rather resistant to the reductive amination, and when hexafluoroisopropanol (HFIP) was used as a co-solvent, the reaction selectivity and yield for unsymmetrical secondary amines increased dramatically. Using the catalyst system, one-pot, gram-scale synthesis of indole was possible
我们已经开发了一种新的催化方法,用于通过PdPt-Fe 3 O 4纳米颗粒(NP)催化剂通过芳基腈与硝基烷烃的还原胺化反应,实现不对称仲胺的一锅级联反应。与单金属Pd–Fe 3 O 4或Pt–Fe 3 O 4相比,双金属催化剂的使用提高了反应性和选择性。NP催化剂。使用这种双金属催化体系,我们成功地在温和条件下合成了各种不对称仲胺。然而,含有给电子取代基的芳基腈相当耐还原胺化,当使用六氟异丙醇(HFIP)作为助溶剂时,不对称仲胺的反应选择性和收率大大提高。使用催化剂体系,可以由2-硝基苯基乙腈一锅克级地合成吲哚。由于Fe 3 O 4载体的磁性,双金属催化剂可以容易地使用外部磁体至少循环四次。
[EN] COMPOSITIONS AND METHODS FOR TREATING TUBERCULOSIS<br/>[FR] COMPOSITIONS ET PROCÉDÉS POUR TRAITER LA TUBERCULOSE
申请人:BROAD INST INC
公开号:WO2017027768A1
公开(公告)日:2017-02-16
The present invention provides compounds for the treatment of a bacterial infection. Additionally, the present invention provides compositions and methods for using these compounds and compositions in the treatment of a bacterial infection in a subject.