15333-80-9Relevant academic research and scientific papers
Application of the polyacrylonitrile fiber as a support for the green heterogeneous base catalyst and supported phase-transfer catalyst
Shi, Xian-Lei,Tao, Minli,Lin, Huikun,Zhang, Wenqin
, p. 64347 - 64353 (2014)
A facile synthesized polyethylene polyamine functionalized polyacrylonitrile fiber (PANF-PA), capable of acting as the heterogeneous base catalyst and supported phase-transfer catalyst (SPTC), was presented in Knoevenagel condensation-cyclization and nucleophilic substitution for the synthesis of a number of substituted iminocoumarins and sulfones in aqueous systems, respectively. Excellent results are shown in terms of simple procedures, high chemical yields (up to 96%), extensive applicability and superior catalytic recyclability even for 10 cycles. The deeper active principle of the PANF-PA as SPTC was explained through detailed characterization by means of elemental analysis, FTIR spectroscopy and SEM. Moreover, the procedures can be effectively scaled up, and the solvent can be easily recovered. As well as, the prominent features (high strength, good flexibility etc.) of the polyacrylonitrile fiber are very attractive for fixed-bed reactors in the chemical industry. This journal is
Hydrolysis and substitution effects on the optical properties of coumarin derivatives studied by vibrational spectroscopy and DFT calculation
Khemakhem, Sirine,Elleuch, Slim,Ben Azaza, Najla,Ammar, Houcine,Abid, Younes
, p. 65 - 72 (2018)
A series of coumarin derivatives have been successfully synthesized. All compounds have been characterized by means of IR and Raman vibrational spectroscopic techniques at the solid state level. Optical absorption and photoluminescence measurements were p
Synthesis and crystal structure of 3-(4′-nitrophenyl)iminocoumarin, and cyclization reaction mechanism based on DFT calculation
Zhang, Chao-Zhi,Li, Shi-Juan,Cao, Hui,Song, Ming-Xia,Kong, Qing-Gang
, p. 1 - 6 (2015)
A convenient method was reported to synthesize 3-(4′-nitrophenyl)iminocoumarin by a cyclization reaction following a Knoevenagel reaction of 2-hydroxybenzaldehyde with 4-nitrophenylacenitrile in an ethanol solution. Piperidine or piperazine was employed r
Copper-Catalyzed Imino C-N Bond Formation with Aryl Boronic Acids under Aerobic Conditions
Mandal, Prashant S.,Kumar, A. Vijay
supporting information, p. 1408 - 1412 (2016/06/01)
A copper-catalyzed, ligand- and base-free C-N cross-coupling reaction of iminochromenes with arylboronic acids in a nontoxic ethanol solvent at room temperature under air is developed. The product yields are found to be good to moderate. The conservation of the sensitive imine functional group implies the mildness of this protocol.
Novel synthesis of bis-iminocoumarins
Ammar,Abid,Le Bigot,El Gharbi
experimental part, p. 799 - 810 (2012/01/17)
Reaction of 3-aryl iminocoumarins with diacid chlorides as C-electrophilic reagents under mild conditions novel bis-iminocoumarins in good yields. When the reaction was performed with alkylene dibromides by heating them in toluene in the presence of IRA 9
Synthesis of new iminocoumarins bearing parabanic moieties
Benmaktouf, Leila,Ammar, Houcine,Le Bigot, Yves,Abid, Souhir
experimental part, p. 1017 - 1026 (2011/04/25)
(Chemical Equation Presented) The synthesis of novel substituted 3-p-nitro-phenyliminocoumarins and corresponding N-ureaiminocoumarins is described. The condensation of these materials with oxalyl chloride leads to the corresponding N-parabanic iminocouma
