Synthesis of Urea Derivatives from CO
<sub>2</sub>
and Silylamines
作者:Maotong Xu、Andrew R. Jupp、Maegan S. E. Ong、Katherine I. Burton、Saurabh S. Chitnis、Douglas W. Stephan
DOI:10.1002/anie.201900058
日期:2019.4.16
A series of thirty‐three N,N′‐diaryl, dialkyl, and alkyl‐aryl ureas have been prepared in pyridine or toluene by reaction of silylamines with CO2. This protocol is shown to provide facile access to 13C‐labeled ureas, as well as chiral and macrocyclic ureas. These reactions proceed through initial generation of the corresponding silylcarbamates, which subsequently react with silylamine under thermal
Hypervalent Iodine(III) Reagents with Transferable Primary Amines: Structure and Reactivity on the Electrophilic α-Amination of Stabilized Enolates
作者:Diogo L. Poeira、Ana Cláudia R. Negrão、Hélio Faustino、Jaime A. S. Coelho、Clara S. B. Gomes、Pedro M. P. Gois、M. Manuel B. Marques
DOI:10.1021/acs.orglett.1c04312
日期:2022.1.21
A new family of hypervalentiodine reagents containing transferable primary amine groups is described. Benziodoxolone-based reagents were synthesized on the gram-scale through operationally simple reactions in up to quantitative yields. These bench-stable solids were characterized by X-ray analysis and successfully employed in the α-amination of indanone-based β-ketoesters in up to 83% yield. Mechanistic
描述了包含可转移伯胺基团的新系列高价碘试剂。苯并氧唑酮类试剂通过操作简单的反应以高达定量的产率在克级合成。这些工作稳定的固体通过 X 射线分析进行了表征,并成功用于茚满酮基 β-酮酯的 α-胺化,产率高达 83%。机理研究表明了一种涉及亲电子胺的取代机理。
PREPARATION AND UTILITY OF CCR5 INHIBITORS
申请人:Gant Thomas G.
公开号:US20080146605A1
公开(公告)日:2008-06-19
Disclosed herein are substituted 8-azabicyclo[3.2.1]octane-based anti-infective agents of Formula I, processes of preparation thereof, pharmaceutical compositions thereof, and methods of use thereof.
position 2 deuterated analogues have been synthesized by 1,4-addition of homochiral nitrogen nucleophiles to γ-alkoxy enoates. The product distribution of the 1,4-addition of lithium amides strongly depends on the nature of the substrate. The configuration can in one case be controlled by the reagent irrespective of the substrate stereochemistry, in other cases the topicity of the addition is complementary