Novel Bifunctionalization of Activated Methylene: Base‐Promoted Trifluoromethylthiolation of β‐Diketones with Trifluoromethanesulfinyl Chloride
作者:Dong‐Wei Sun、Min Jiang、Jin‐Tao Liu
DOI:10.1002/chem.201901781
日期:2019.8.14
β-diketones or β-ketoesters with trifluoromethanesulfinyl chloride. A series of α-trifluoromethylthiolated α-chloro-β-diketones and α-chloro-β-ketoesters were obtained in moderate to good yields under mild conditions. When β-diketones containing a phenyl group with a hydroxyl or amino substituent at the ortho position were used as substrates, intramolecular trifluoromethylthiolation/cyclizationreaction took
Nickel-catalyzed oxidative esterification of formamides with 1,3-dicarbonyl compounds under mild reaction conditions
作者:Dariush Saberi、Samira Poorsadeghi
DOI:10.1002/aoc.3855
日期:2017.12
Synthesis of enol carbamates was achieved via nickel‐catalyzed oxidative coupling of formamides with 1,3‐dicarbonyl compounds in the presence of tert‐butyl hydroperoxide at 40 °C. Various derivatives of enol carbamates were synthesized by this method in good to excellent yields.
CuO nanoparticles supported on α-Fe2O3-modified CNTs: a magnetically separable catalyst for oxidative C–O coupling of formamides with 1,3-dicarbonyl compounds
作者:Dariush Saberi、Akbar Heydari
DOI:10.1016/j.tetlet.2013.05.113
日期:2013.8
Oxidative coupling of formamides with 1,3-dicarbonyl compounds to prepare enol carbamates was effected in the presence of CuO nanoparticles supported on alpha-Fe2O3-modified carbon nanotubes (CNTs@alpha-Fe2O3@CuO) as an environmentally friendly heterogeneous catalyst. The simple preparation, and the ability to be recycled and magnetically separated are salient features of this catalytic system. (C) 2013 Elsevier Ltd. All rights reserved.