31330-51-5Relevant articles and documents
Highly Active Copper(I)-Chalcogenone Catalyzed Knoevenagel Condensation Reaction Using Various Aldehydes and Active Methylene Compounds
Mannarsamy, Maruthupandi,Prabusankar, Ganesan
, (2021/10/05)
First copper(I) chalcogenones catalysed Knoevenagel Condensation reactions have been reported. No illustration of the utilization of this copper-chalcogenone complex class in Knoevenagel Condensation catalysis can be found. Thus, copper(I) bis(benzimidazole-2-chalcogenone) catalysts [Cu(L1)4]+BF4? (1) and [Cu(L2)4]+BF4? (2) (L1 = bis(1-isopropyl-benzimidazole-2-selone)-3-ethyl; L2 = bis(1-isopropyl-benzimidazole-2-thione)-3-ethyl) have been utilized as catalysts in the Knoevenagel Condensation reactions. These copper(I) chalcogenone catalysts have shown high efficiency for the catalytic Knoevenagel Condensation of aryl aldehydes and active methylene compounds. In particular, complex 2, exhibit the best catalytic activities. The scope of the catalytic reactions has been investigated with 22 different molecules. The excellent catalytic activity has been depicted for various types of substrates with either electron-rich or deficient aryl aldehydes. The present investigation features relatively mild reaction conditions with good functional group tolerance and excellent yields. Graphic Abstract: The first copper(I)-chalcogenone complexes catalysed Knoevenagel Condensation reactions?have also been investigated, and revealed the best catalytic activities. [Figure not available: see fulltext.]
Novel synthesis of 3-cyano-2-pyridones derivatives catalyzed by Au–Co/TiO2
Mehiaoui, Nawel,Kibou, Zahira,Berrichi, Amina,Bachir, Redouane,Choukchou-Braham, Noureddine
, p. 5263 - 5280 (2020/09/21)
Abstract: The current work described a new and highly selective method for the synthesis of substituted 3-cyano-2-pyridones scaffolds using gold-cobalt supported on TiO2 as a robust and recyclable catalyst. The products were successfully obtained by one-pot, multicomponent manner. This procedure generated the desired products 2-pyridones derivatives in good yields, from simple and available starting materials using heterogeneous and reusable catalyst. The diversity of 3-cyano-2-pyridones derivatives was prepared and characterized by IR, 1H and 13C NMR data and confirmed by element analysis data. Graphic abstract: [Figure not available: see fulltext.].
Polymer immobilized [Mg@PS-anthra] complex: An efficient recyclable heterogeneous catalyst for the incorporation of carbon dioxide into oxiranes at atmospheric pressure and Knoevenagel condensation reaction under solvent free condition
Mondal, Ranjan Kumar,Riyajuddin, Sk,Ghosh, Aniruddha,Ghosh, Swarbhanu,Ghosh, Kaushik,Islam, Sk.Manirul
, p. 322 - 332 (2018/12/11)
Chemical fixation of CO2 into the organic molecules is very challenging from the perspective of greenhouse gas consumption and manufacturing of chemicals with C1 backbone. The process was developed with the synthesis of an efficient polystyrene