Results 31 to 40 of about 14,359 (248)
Scientia Pharmaceutica, 2023 Miscellaneous imines and acyl hydrazones were prepared from 5-nitrofuraldehyde and 5-nitrothiophene-2-carboxaldehyde. Their activities against Toxoplasma gondii and Leishmania major parasites were evaluated.
Ibrahim S. Al Nasr +4 more
doaj +1 more source
Direct Iminization of PEEK [PDF]
Macromolecules, 2011 Semi-crystalline poly(ether ketone)s are important high-temperature engineering thermoplastics, but are difficult to characterize at the molecular level because of their insolubility in conventional organic solvents. Here we report that polymers of this type, including PEEK, react cleanly at high temperatures with low-volatility aralkyl amines to ...
Manolakis, Ioannis +2 more
openaire +1 more source
Stereoselective Reduction of Imines with Trichlorosilane Using Solid-Supported Chiral Picolinamides
Molecules, 2016 The stereoselective reduction of imines with trichlorosilane catalyzed by chiral Lewis bases is a well-established procedure for the synthesis of enantio-enriched amines.
Sílvia D. Fernandes +5 more
doaj +1 more source
Determination of Ka values for some phenolic compounds derived from benzoyl acetonitril by electrical conductivity [PDF]
مجلة التربية والعلم, 2013 This investigation was started by synthesis of three phenolic Schiff bases from the mother compound benzoyl acetonitril, These having OH groups in o، m، p positions on amino side of molecules. The structures of these imines were confirmed from U.V. and I.
Adil Saeed Azooz +2 more
doaj +1 more source
Recent Advances in the Domino Annulation Reaction of Quinone Imines
MoleculesQuinone imines are important derivatives of quinones with a wide range of applications in organic synthesis and the pharmaceutical industry. The attack of nucleophilic reagents on quinone imines tends to lead to aromatization of the quinone skeleton ...
Zhen-Hua Wang +7 more
doaj +1 more source
Molecules, 2020 Inversions in the periselectivity of formal aza-Diels–Alder cycloadditions between α-oxoketenes generated by a thermally-induced Wolff rearrangement and 1-azadienes were observed experimentally as a function of the α-oxoketene and the 1-azadiene, as well
Marc Presset +4 more
doaj +1 more source
Molecules, 2021 A series of (E)-4-bromo-N-((3-bromothiophen-2-yl)methylene)-2-methylaniline analogs synthesized in considerable yields through Suzuki cross-coupling reactions.
Komal Rizwan +6 more
doaj +1 more source
An (R)‐Imine Reductase Biocatalyst for the Asymmetric Reduction of Cyclic Imines [PDF]
ChemCatChem, 2015 AbstractAlthough the range of biocatalysts available for the synthesis of enantiomerically pure chiral amines continues to expand, few existing methods provide access to secondary amines. To address this shortcoming, we have over‐expressed the gene for an (R)‐imine reductase [(R)‐IRED] from Streptomyces sp.
Hussain +8 more
openaire +2 more sources
Determination of Stability for imines derived from carbonyl compounds by conductivity measurements
Tikrit Journal of Pure Science, 2018 The project explained for the first time, how conductivity method was used in the determination of stability of some imines derived from mother compounds 2-acetyl pyridine, 3 or 4 –hydroxy benzaldehyde, and others. The method as found, simple precise
A.S.P. Azzouz, D.B.AL-Bakzo
doaj +1 more source
Molecules, 1998 The synthesis of eight hydroxy- and 2-oxopyranochromone-3-carboxaldehydes 3, 5 and their reactions with 2-hydroxyaniline, 2,4-dinitrophenylhydrazine and 2-benzothiazolylhydrazine were investigated.
Hafez M. El-Shaaer +4 more
doaj +1 more source