94208-22-7Relevant academic research and scientific papers
Two Component Recyclable Heterogeneous Catalyst, Process for Preparation Thereof and its Use for Preparation of Amines
-
Page/Page column 5, (2012/01/13)
The invention describes the development of highly efficient, recyclable two component system, CuAl-hydrotalcite/rac 1,1′-Binaphthalene-2,2′-diol catalytic system for the N-alkylation of electron deficient aryl chlorides in presence of potassium carbonate as a base at room temperature in 3-6 h, wherein the process is provided for the preparation of various secondary amines via C—N coupling reaction of aliphatic amines(aliphatic open chain, acyclic, benzyl amines and heterocyclic amines) with various aryl chlorides.
C-N bond formation catalysed by CuI Bonded to polyaniline nanofiber
Arundhathi, Racha,Kumar, Desitti Chaitanya,Sreedhar, Bojja
supporting information; experimental part, p. 3621 - 3630 (2010/08/20)
Polyaniline nanofiber as a macroligand for the supported cuprous iodide catalyst (CuI-PANInf) has been developed for the coupling of aryl halides (including aryl chlorides) with aliphatic, aromatic, and N(H)-heterocyclic amines under ambient conditions (80 °C for aryl chlorides) has been developed. This simple and efficient method for coupling reactions is highly versatile, convenient, and also the catalyst can be used for several cycles with good-to-excellent yields.
Cu-Al hydrotalcite: An efficient and reusable ligand-free catalyst for the coupling of aryl chlorides with aliphatic, aromatic, and N(H)-heterocyclic amines
Sreedhar,Arundhathi,Linga Reddy,Amarnath Reddy,Lakshmi Kantam
experimental part, p. 2517 - 2522 (2010/03/24)
Copper-aluminum hydrotalcite catalysts were effectively used in the coupling of aryl chlorides with aliphatic, aromatic, and N(H)-heterocyclic amines to afford the corresponding N-alkylated/arylated amines in excellent yields. The catalyst was quantitatively recovered from the reaction by simple filtration and reused for a number of cycles with almost consistent activity. Georg Thieme Verlag Stuttgart.
O- and N-Alkylsubstituted 2-(2'-Hydroxyphenyl)-benzimidazoles and -1,3,4-Oxadiazoles as Complexing and Extracting Agents for Copper-II-Ions
Beger, J.,Wagner, G.,Uhlig, E.,Dinjus, U.
, p. 708 - 718 (2007/10/02)
2-(2'-Alkoxyphenyl)-benzimidazoles 1, 1-alkyl-2-(2'-hydroxyphenyl)-benzimidazoles 2, 2-(2'-hydroxy-4'-alkoxyphenyl)-benzimidazoles 3, 2-(2',4'-dialkoxyphenyl)-benzimidazoles 4 and 1-alkyl-2-(2'-hydroxy-5'-nitrophenyl)-benzimidazoles 7 are synthesized by condensation of 2-hydroxybenzoic acid derivatives and o-phenylendiamine or its derivatives.Alkyl chains (C4, C8 or C12) are introduced by alkylation before or after the ring closure in order to increase the solubility of the reagent in toluene or n-octane.Furthermore the extraction properties of the benzimidazoles are investigated.Also some new analogous compounds of the benzothiazole and the 1,3,4-oxadiazole series were synthesized.
