788-23-8Relevant academic research and scientific papers
Design, spectroscopic properties and effects of novel catechol spiroborates derived from Schiff bases in the antioxidant, antibacterial and DNA binding activity
Kilic, Ahmet,Okumu?, Veysi,S?ylemez, Rahime
, (2021/12/30)
Novel catechol spiroborates (L(1–5)B) were prepared from the reaction of the corresponding Schiff base (L(1–5)H) ligands, boric acid, and 3,5-di?tert?butyl catechol under favorable reaction conditions. The synthesized all compounds w
Schiff base transition metal complexes for Suzuki–Miyaura cross-coupling reaction
Ansari, Rasheeda M,Bhat, Badekai Ramachandra
, p. 1483 - 1490 (2017/09/25)
Abstract: Schiff base ligand and its complex with iron (Fe), cobalt (Co), nickel (Ni) and copper (Cu) ions were synthesized using 4-aminoacetophenone and salicylaldehyde and characterized. FTIR spectrum shows that bidentate coordination of metal ions with ligand where O, N are electron donating sites of azomethine group. The geometry of the complexes was deduced from the calculated magnetic moment values and SCXRD analysis. All complexes were studied for their catalytic activity in Suzuki–Miyaura cross-coupling reaction with Cu–L complex showing excellent coupling yield among others. The catalytic activity data show promising results in coupling efficiency, employing cheap, abundant and green metals. Graphical Abstract: Synopsis The transition metal Schiff base complexes synthesized and characterized by SCXRD, Mass spectrometry, TGA, UV–Vis and FTIR analysis. Magnetic susceptibility measurements were also examined to know the plausible geometry of the complex. The synthesized complexes were systematically investigated for Suzuki–Miyaura cross-coupling reactions and optimized to enhance the yield of the Suzuki reaction. [Figure not available: see fulltext.].
Design, synthesis and in vitro antimalarial evaluation of new quinolinylhydrazone derivatives
Thuy, Le Thi,Tien, Hoang Xuan,Hoang, Vu Dinh,Vu, Tran Khac
scheme or table, p. 163 - 168 (2012/07/17)
A series of novel quinolinylhydrazones (5a-f) was synthesized by the condensation reaction of 2,6-diaryl-substituted piperidin-4-ones (4a-f) with 7-chloro-4-hydrazinoquinoline (2). Novel quinolinylhydrazones containing Shiff bases 8a-f and 11a-f were obta
The substituent effects on the 13C chemical shifts of the azomethine carbon atom of N-(substituted phenyl)salicylaldimines
Drmanic, Sasa Z.,Marinkovic, Aleksandar D.,Nikolic, Jasmina B.,Jovanovic, Bratislav Z.
, p. 993 - 1001 (2012/10/29)
Hammett correlations between the 13C-NMR chemical shifts of the azomethine carbon atom and the corresponding substituent constants were established for thirteen Schiff bases. The successful correlation of the chemical shifts with the electrophilic substituent constants σ+ indicate a significant resonance interaction of the substituents on the aniline ring with the azomethine carbon atom in the examined series of imines. The demand for electrons in the investigated compounds was compared to that of the N-benzylideneanilines and N-(substituted phenyl)pyridinealdimines. The manner of transmission of the substituent effects is discussed and they were separated into resonance and inductive effects. The inductive effects prevail over the resonance effects.
Mixed ligand complexes of cobalt(II and III) - Molecular structure of bis-(4-acetophenylsalicylaldiminato)acetylacetonato cobalt(III)
De Lal,Banerjee,Mukherjee,Guha
, p. 1050 - 1054 (2007/10/03)
The bidentate Schiff bases, HL′(= N-4-acetophenylsalicylal-dimine), H″(=N-3-acetophenylsalicylaldimine) and HL? (=N-4-acetophenyl-5-bromosalicylaldimine) do not form complexes with simple cobalt(II)salts, e.g.,Co(CH3COO)2.4H2/s
Exchange of amine part of schiff bases with ammonia in presence of a metal ion: Molecular structure of bis-(salicylaldiminato) nickel(II)
De, Rajib Lal,Banerjee, Indrajit,Samanta, Chitra,Mukherjee, Alok K.
, p. 373 - 376 (2007/10/03)
The schiff bases N-X1-acetophenyl-X2-salicylaldimines (X1=4 or 3; *X2=H or 5Br) inert to complexation with nickel(II) and cobalt(II) salts undergo very prompt reactions when ammonia is added to the reaction mixt
6-[N-(2-Hydroxyphenyl)aminomethylene]-cyclohexa-2,4-dien-1-one
Mukherjee, Alok K.,De Lal, Rajib,Banerjee, Indrajit,Samanta, Chitra,Nayak, Nirmalya P.
, p. 407 - 410 (2007/10/03)
The structure determination of the title compound, C13H11NO2, establishes the tautomeric keto form of the salicylaldimine. The asymmetric unit consists of two crystallographically independent molecules which are essentiall
Synthesis of Some New &β-Lactams, 4-Thiazolidinones and Pyrazolines
Fahmy, A. M.,Hassan, Kh. M.,Khalaf, A. A.,Ahmed, R. A.
, p. 884 - 887 (2007/10/02)
N-Arylidene-p-aminoacetophenone (I) and N-arylidene-4'-aminochalcones (V) have been converted into a series of substituted β-lactams (III) and 4-thiazolidinones (IV), and pyrazolines (VI, VII) respectively. p-Chloroacetamidoacetophenone (II) has also been converted into series of substituted 4'-piperidino/morpholinoacetoamidochalcones (X) which undergo cyclization on treatment with hydrazine, phenylhydrazine or thiourea to pyrazolines (XI, XII) and pyrimidine-2-thiones (XIII) respectively.The antibacterial and antifungal activities of the compounds have been determined.
