Oxidativenucleophilicsubstitution of hydrogen (ONSH) in nitroarenes with carbanion of isopropyl phenyl acetate gives various products depending on the conditions and oxidant. The reaction carried out in liquid ammonia and KMnO4 oxidant gives iso-propyl α-hydroxy-α-nitroarylphenylacetates formed via hydroxylation of the initial ONSH products. In some cases additionally dimeric, trimeric and tetrameric
Cation-Controlled Enantioselective and Diastereoselective Synthesis of Indolines: An Autoinductive Phase-Transfer Initiated 5-<i>endo</i>-<i>trig</i> Process
作者:Krishna Sharma、Jamie R. Wolstenhulme、Phillip P. Painter、David Yeo、Francisca Grande-Carmona、Craig P. Johnston、Dean J. Tantillo、Martin D. Smith
DOI:10.1021/jacs.5b08834
日期:2015.10.21
A catalytic enantioselective approach to the synthesis of indolines bearing two asymmetriccenters, one of which is all-carbon and quaternary, is described. This reaction proceeds with high levels of diastereoselectivity (>20:1) and high levels of enantioselectivity (up to 99.5:0.5 er) in the presence of CsOH·H2O and a quinine-derived ammonium salt. The reaction most likely proceeds via a delocalized
Palladium-Catalyzed Regiodivergent Substitution of Propargylic Carbonates
作者:Theresa M. Locascio、Jon A. Tunge
DOI:10.1002/chem.201603481
日期:2016.12.12
The palladium(0)‐catalyzed, ligand‐controlled, regioselective addition of diaryl acetonitrile pronucleophiles to propargylic carbonates is reported. Selective formation of either terminal 1,3‐dienyl or propargylated products is proposed to arise from a change in reaction mechanism controlled by the denticity of the coordinating ligand.
Active and Recyclable Catalytic Synthesis of Indoles by Reductive Cyclization of 2-(2-Nitroaryl)acetonitriles in the Presence of Co–Rh Heterobimetallic Nanoparticles with Atmospheric Hydrogen under Mild Conditions
作者:Isaac Choi、Hyunho Chung、Jang Won Park、Young Keun Chung
DOI:10.1021/acs.orglett.6b02659
日期:2016.11.4
cobalt–rhodium heterobimetallic nanoparticle-catalyzed reductive cyclization of 2-(2-nitroaryl)acetonitriles to indoles has been achieved. The tandem reaction proceeds without any additives under the mild conditions (1 atm H2 and 25 °C). This procedure could be scaled up to the gram scale. The catalytic system is significantly stable under these reaction conditions and could be reused more than ten times without
钴-铑异双金属纳米粒子催化的2-(2-硝基芳基)乙腈还原环化成吲哚。在温和条件下(1 atm H 2和25°C),串联反应在没有任何添加剂的情况下进行。该过程可以按比例放大至克级。在这些反应条件下,催化体系非常稳定,可以重复使用十次以上,而不会损失催化活性。
Discovery of a Highly Selective Cell-Active Inhibitor of the Histone Lysine Demethylases KDM2/7
作者:Philip A. Gerken、Jamie R. Wolstenhulme、Anthony Tumber、Stephanie B. Hatch、Yijia Zhang、Susanne Müller、Shane A. Chandler、Barbara Mair、Fengling Li、Sebastian M. B. Nijman、Rebecca Konietzny、Tamas Szommer、Clarence Yapp、Oleg Fedorov、Justin L. P. Benesch、Masoud Vedadi、Benedikt M. Kessler、Akane Kawamura、Paul E. Brennan、Martin D. Smith
DOI:10.1002/anie.201706788
日期:2017.12.4
Small but mighty: A new class of inhibitor was discovered that is highly potent towards the histone lysine demethylases (KDMs) KDM2A/7A. A modular synthetic approach was used to explore chemical space and accelerate the investigation of key structure–activity relationships, leading to the development of a small molecule with more than 75-fold selectivity towards KDM2A/7A versus other KDMs, as well