“Nanorust”-catalyzed Benign Oxidation of Amines for Selective Synthesis of Nitriles
作者:Rajenahally V. Jagadeesh、Henrik Junge、Matthias Beller
DOI:10.1002/cssc.201402613
日期:2015.1
Organic nitriles constitute key precursors and central intermediates in organicsynthesis. In addition, nitriles represent a versatile motif found in numerous medicinally and biologically important compounds. Generally, these nitriles are synthesized by traditional cyanation procedures using toxic cyanides. Herein, we report the selective and environmentally benign oxidative conversion of primary amines
有机腈构成有机合成中的关键前体和中心中间体。另外,腈是在许多医学和生物学上重要的化合物中发现的通用基序。通常,这些腈是使用有毒氰化物通过传统的氰化步骤合成的。本文中,我们报道了使用可重复使用的基于“纳米锈”(纳米级Fe 2 O 3)的分子氧催化剂,伯胺选择性和环境无害的氧化转化,用于合成结构多样的芳香族,脂肪族和杂环腈。
Synthesis of nitriles from amines using nanoscale Co<sub>3</sub>O<sub>4</sub>-based catalysts via sustainable aerobic oxidation
作者:Kishore Natte、Rajenahally V. Jagadeesh、Muhammad Sharif、Helfried Neumann、Matthias Beller
DOI:10.1039/c6ob00184j
日期:——
The selective oxidation of amines for the benign synthesis of nitriles under mild conditions is described. Key to success for this transformation is the application of reusable cobalt oxide-based nanocatalysts. The resulting nitriles constitute key precursors and central intermediates in organic synthesis.
Small-molecule pyrimidine inhibitors of the cdc2-like (Clk) and dual specificity tyrosine phosphorylation-regulated (Dyrk) kinases: Development of chemical probe ML315
作者:Thomas C. Coombs、Cordelle Tanega、Min Shen、Jenna L. Wang、Douglas S. Auld、Samuel W. Gerritz、Frank J. Schoenen、Craig J. Thomas、Jeffrey Aubé
DOI:10.1016/j.bmcl.2013.02.096
日期:2013.6
Substituted pyrimidine inhibitors of the Clk and Dyrk kinases have been developed, exploring structure-activity relationships around four different chemotypes. The most potent compounds have low-nanomolar inhibitory activity against Clk1, Clk2, Clk4, Dyrk1A and Dyrk1B. Kinome scans with 442 kinases using agents representing three of the chemotypes show these inhibitors to be highly selective for the Clk and Dyrk families. Further off-target pharmacological evaluation with ML315, the most selective agent, supports this conclusion. (C) 2013 Elsevier Ltd. All rights reserved.
Cobalt-Catalyzed Cross-Coupling Between In Situ Prepared Arylzinc Halides and 2-Chloropyrimidine or 2-Chloropyrazine
作者:Jeanne-Marie Bégouin、Corinne Gosmini
DOI:10.1021/jo900240d
日期:2009.4.17
A cobalt-catalyzed cross-coupling of aryl halides with 2-chloropyrimidines or 2-chloropyrazines is reported in satisfactory to high yields. The key step of this procedure is the formation of aromatic organozinc reagents and their coupling with 2-chlorodiazines using the same cobalt halide as catalyst and Zn dust under mild reaction conditions. This new cobalt-catalyzed coupling reaction represents a practical and interesting alternative to previously known methods for the synthesis of 2-aryldiazines.