3046-82-0Relevant articles and documents
The robustness of a thermoset of a main-chain type polybenzoxazine precursor prepared through a strategy of A-A and B-B polycondensation
Wang, Meng Wei,Jeng, Ru Jong,Lin, Ching Hsuan
, p. 18678 - 18684 (2016)
A polybenzoxazine precursor, P(BF-bapp)-1, was prepared through a strategy of A-A and B-B polycondensation. The A-A monomer is 5,5′-methylenebis(2-hydroxybenzaldehyde), and the B-B monomer is 2,2-bis[4-(4-aminophenoxy)phenyl] propane (BAPP). The inherent
Microwave assisted synthesis of novel methylenebis{2-[(1-benzyl/cyclohexyl-1H-1,2,3-triazol-4-yl)methoxy]chalcones} and their antibacterial activity
Ramesh, S.,Ashok, D.,Linga Goud, G.,Prabhakar Reddy, V.
, p. 1608 - 1614 (2014)
A series of novel methylenebis{2-[(1-benzyl/cyclohexyl-1H-1,2,3-triazol-4-yl)methoxy]chalcones} (IVa-IVn) have been synthesized by the Click reaction and Claisen-Schmidt condensation of 5,5'-methylenebis[2-(prop-2-yn-1-yloxy)benzaldehyde] under microwave irradiation with high yields. All products have been characterized by spectral data including FT-IR, 1H, and 13C NMR, mass spectrometry, and tested for their antibacterial activity.
Synthesis, antimicrobial evaluation, and docking studies of some novel benzofuran based analogues of chalcone and 1,4-benzodiazepine
Shankar,Jalapathi,Ramesh,Kumar, A. Kishore,Ragavender,Bharath
, p. 1711 - 1721 (2016)
A series of novel {5-[4-hydroxy-3-(4-phenyl-2,3-dihydro-1H-benzo[b][1,4]diazepin-2-yl)benzyl]- benzofuran-2-yl}(phenyl)methanones (5a–5g) were prepared by the condensation of (E)-3-{5-[(2- benzoylbenzofuran-5-yl)methyl]-2-hydroxyphenyl}-1-phenylprop-2-en-
Schiff bases-titanium (III) & (IV) complex compounds: Novel photocatalysts in Buchwald-Hartwig C–N cross-coupling reaction
Absalan, Yahya,Ghandi, Khashayar,Gholizadeh, Mostafa,Kovalchukova, Olga,Mahmoudi, Ghodrat,Sarvestani, Hossein Sabet,Shad, Nazanin Noroozi,Strashnov, Pavel
, (2021/05/21)
Nine novel Schiff bases were derived from salicylic aldehyde and oxalic aldehyde, isolated, and their molecular and spatial structure were explored by a set of experiments (IR, CNMR, HNMR, CHN, SEM, XRD) and theoretical simulation (DFT def2-TZVP). A high potential was predicted in metal cations chelating. The isolated organic species were applied as the ligands in the reaction of complex formation with titanium (III) chloride and (IV) bromide and 12 novel complexes were synthesized and studied experimentally and theoretically. Using the UV–vis spectroscopic titration, the solution stability of the complexes was indicated. Depending on the nature of the Schiff base ligand, their formation constants were calculated in the range of 6.84–17.32. Using the DFT def2-TZVP theoretical method together with the experimental spectroscopic data, the coordination types of the ligands were investigated, and the structure of the complexes was proposed. The photocatalytic ability of the isolated complexes was tested in the C-N cross-coupling reaction under sunlight. Complexes exhibited high visible-light photocatalytic activity for a wide range of aromatic and benzylic amines including electron-withdrawing and electron-donating groups from moderate to good yields ranging in 50–85 %. The use of an inexpensive, clean, and renewable energy source (visible light) is the superiority of the developed photocatalytic systems.
Design and synthesis of bis-pyrimidines linked with thiazolidin-4-one as new antibacterial agents
Sanjeeva Reddy,Nagaraj,Yakub,Kalyani
, p. 1913 - 1918 (2019/08/08)
A series of novel 3-4-[2-hydroxy-5-(4-hydroxy-3-2-[2-(aryl)-4-oxo-1,3-thiazolan-3-yl]-6-phenyl-4-pyrimidinylbenzyl)phenyl]-6-phenyl-2-pyrimidinyl-2-(aryl)-1,3-thiazolan-4-ones 5(a-j) have been synthesized and assayed for their antibacterial activity again
Biology-based flame-retardant epoxy resin precursor on basis of natural phenol monomers, method for preparing biology-based flame-retardant epoxy resin precursor and application thereof
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Paragraph 0032; 0033; 0039; 0040; 0044; 0045, (2019/05/22)
The invention discloses a biology-based flame-retardant epoxy resin precursor on the basis of natural phenol monomers. The biology-based flame-retardant epoxy resin precursor is of a structure shown as a following formula (I). A method for preparing the b
Structural Identification of Products from the Chloromethylation of Salicylaldehyde
Kadwa, Ebrahim,Friedrich, Holger B.,Bala, Muhammad D.
, p. 44 - 48 (2019/01/04)
In the functionalization of salicylaldehyde to give 5-(chloromethyl)salicylaldehyde, two byproducts [5-(hydroxymethyl)salicylaldehyde and 5,5′-methylenebis(salicylaldehyde)] were also isolated. Detailed characterizations and structural analyses of all three products by single-crystal X-ray diffraction, multinuclear NMR spectroscopy, high-resolution mass spectrometry, and IR spectroscopic techniques are presented and discussed. A strategy is presented for the preferential isolation of the two byproducts through column chromatography.
Metal-free synthesis of calixsalen-type cavitands for the recognition of fluoride ion
Desai, Arpita,Rana, Dharti
supporting information, p. 291 - 301 (2018/02/09)
Novel calixsalen-type cavitands have been synthesized using metal-free synthesis from simple and inexpensive materials, such as ethylenediamine and 5,5′-methylene-bis-salicylaldehyde derivatives. The cavitand 1 containing salen functionality recognizes fl
Preparation method of novel dispiropyran chromophore
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Paragraph 0044; 0045, (2018/12/14)
The invention discloses a preparation method of novel dispiropyran chromophore. Salicylaldehyde and trioxymethylene are used as raw materials, glacial acetic acid is used as a solvent, thick sulfuricacid is used as a catalyst to synthesize a salicylaldehy
Synthesis and antimicrobial activity of novel substituted 4-[3-(1H-benzimidazol-2-yl)-4-hydroxybenzyl]-2-(1H-benzimidazol-2-yl)phenol derivatives
Anil,Shankar,Bharath,Jalapathi
, p. 2648 - 2653 (2017/12/26)
A series of novel substituted bis-benzimidazole derivatives were synthesized by reaction of 5,5′-methylenebis(2-hydroxybenzaldehyde) with various substituted o-phenylenediamines in glacial acetic acid. The structure of the newly synthesized compounds was elucidated by 1H and 13C NMR, FT-IR, and MS spectra, and their antimicrobial activity against gram positive and gram negative bacteria and antifungal activity were evaluated. The thienyl-substituted derivative showed significant activity against Bacillus licheniformis. Bacillus subtilis, Staphylococcus aureus, Klebsiella pneumonia (bacteria), and Fusarium solani (fungi). The activities of the fluoro-substituted substituted derivative against some bacterial strains and of the thienyl-substituted derivative against fungi were found to be similar to those of standard drugs.
