Metal-Free Cercosporin-Photocatalyzed C-S Coupling for the Selective Synthesis of Aryl Sulfides under Mild Conditions
作者:Jia Li、Wenhao Bao、Yan Zhang、Yijian Rao
DOI:10.1002/ejoc.201901444
日期:2019.11.14
cercosporin at aspects of photophysics and photobiology, its application in photocatalysis has been rarely reported. Herein we report cercosporin‐photocatalyzed selective synthesis of aryl sulfides undermild and green conditions. The gram‐scale reaction can proceed using cercosporin‐containing fermentation supernatant without purification.
The utility of perovskite-based materials in organic synthesis is explored through examination of a series of copper- and palladium-containing perovskites in Ullmann and Sonogashira type reactions. La0.9Ce0.1Co0.6Cu0.4O3 is identified as an effective catalyst for the synthesis of a range of biaryl ether and thioether functionalities, whilst a Cu- and Pd-containing perovskite is effective in the Sonogashira reaction. These results suggest that perovskites may be useful leads in the search for new catalysts and reagents for organic synthesis.
METHOD AND CATALYST FOR PREPARING ANILINE COMPOUNDS AND USE THEREOF
申请人:Seasons Biotechnology (Taizhou) Co., Ltd.
公开号:US20190100486A1
公开(公告)日:2019-04-04
The present invention provides a method for preparing aniline compounds, and also provides a kind of catalyst and use thereof. This method for synthesizing an aniline compound in the invention includes following steps: use molybdenum oxide and activated carbon as catalyst, hydrazine hydrate as reducing agent, then reduce aromatic nitro compounds to aniline compounds. This method is green and high efficiency, and easy to be applied in industry.
Cerium catalyst promoted C–S cross-coupling: synthesis of thioethers, dapsone and RN-18 precursors
作者:José M. da C. Tavares Junior、Caren D. G. da Silva、Beatriz F. dos Santos、Nicole S. Souza、Aline R. de Oliveira、Vicente L. Kupfer、Andrelson W. Rinaldi、Nelson L. C. Domingues
DOI:10.1039/c9ob02171j
日期:——
In this work, we present a novel, efficient and green methodology for the synthesis of thioethers by the C–Scross-couplingreaction with the assistance of [Ce(L-Pro)2]2Ox as a heterogeneous catalyst in good to excellent yields. A scale-up of the protocol was explored using an unpublished methodology for the synthesis of a dapsone-precursor, which proved to be very effective over a short time. The