Herein we report an effective and simple preparation method of substituted azoxybenzenes by reductive dimerization of nitrosobenzenes. This procedure requires no additional catalyst/reagent and can be applied to substrates with a wide range of substitution patterns.
Continuous Flow Synthesis of Azoxybenzenes by Reductive Dimerization of Nitrosobenzenes with Gel‐Bound Catalysts
作者:Carsten J. Schmiegel、Patrik Berg、Franziska Obst、Roland Schoch、Dietmar Appelhans、Dirk Kuckling
DOI:10.1002/ejoc.202100006
日期:2021.3.19
In search for a new synthetic pathway for azoxybenzenes with different substitution patterns, an approach using a microfluidic reactor with gel‐bound proline organocatalysts under continuous flow inside a microfluidic device is presented.
Substituted spiro-amide compounds corresponding to formula I
in which R5 through R8, D, X, Y and Z have defined meanings, processes for preparing such spiro-amide compounds, pharmaceutical compositions containing such compounds, and methods of using such spiro-amide compounds for treating and/or inhibiting disorders or disease states mediated at least in part by the bradykinin 1 receptor.
The present invention is a one-step method for efficiently converting carbon-hydrogen bonds into carbon-carbon bonds using a combination of aryl halides, a substrate, and a copper salt as catalyst. This method allows faster introduction of complex molecular entities, a process that would otherwise require many more steps. This invention is particularly relevant for the organic synthesis of complex molecules such as, but not limited to, pharmacophores and explosives.
Metal free direct C(sp<sup>2</sup>)–H arylaminations using nitrosoarenes to 2-hydroxy-di(het)aryl amines as multifunctional Aβ-aggregation modulators
作者:Subhra Kanti Roy、Anuj Tiwari、Mohammed Saleem、Chandan K. Jana
DOI:10.1039/c8cc08470j
日期:——
A direct C(sp2)–H arylamination of 2-hydroxyarenes using nitrosoarenes was achieved under metal free conditions without the aid of additional reagents/steps for N–O bond cleavage.