Results 11 to 20 of about 26,755 (292)

Recent Advances in the Domino Annulation Reaction of Quinone Imines [PDF]

open access: yesMolecules
Quinone 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   +2 more sources

Cycloruthenated Imines: A Step into the Nanomolar Region [PDF]

open access: yesMolecules
A new series of promising and easily accessible antiproliferative agents based on cycloruthenated imines of benzene and thiophene carbaldehydes has been developed and fully characterized using UV-Vis spectroscopy, X-ray diffraction, NMR, HRMS, and cyclic
Arsenii A. Vasil’ev   +6 more
doaj   +2 more sources

Olefination of 3‑Diazoindolin-2-imines with Hydrazones: An Approach toward Stereoselective Synthesis of (E)‑3-Arylideneindolin-2-imines [PDF]

open access: yes, 2022
Stereoselective synthesis of (E)-3-arylideneindolin-2-imines from 3-diazoindolin-2-imines and hydrazones was achieved using copper bromide as the catalyst.
Yanguang Wang (1412947)   +3 more
core   +1 more source

Designed for Circularity: Chemically Recyclable and Enzymatically Degradable Biorenewable Schiff Base Polyester-Imines [PDF]

open access: yes, 2023
Bio-based plastics potentially have several positive impacts on the environment; however, in order to make a real difference, they need to have managed and sustainable end of life.
Nasim Najjarzadeh (8561637)   +11 more
core   +1 more source

Determination of some imines structures derived from salicylaldehyde with phenylene diamines by physical methods [PDF]

open access: yesKirkuk Journal of Science, 2012
The project is concerned with the preparation of four imines derived from salicylaldehyde with some aromatic primary amines, namely, o,m and p–phenylene diamine.These imines were identified by physical means available, namely the melting points, UV
A.S.P. Azzouz   +2 more
doaj   +1 more source

Asymmetric Reactions of N-Phosphonyl/Phosphoryl Imines

open access: yesMolecules, 2023
The asymmetric reactions of imines continued to attract the attention of the scientific community for decades. However, the stereoselective reactions of N-phosphonyl/phosphoryl imines remained less explored as compared to other N-substituted imines.
Devalina Ray   +3 more
doaj   +1 more source

A Comparative Study of the Values of Ionization Constants for Acid Compounds Derived from N-formyl pipyidines [PDF]

open access: yesمجلة التربية والعلم, 2012
The paper is concerned with the determination of pKa or pK′a values for a new fourteen imines by potentometric titration method. These imines are prepared from the mother compound the N- formyl pipyidines in a forms of oximes, phenolic Schiff bases ...
Adel Azzouz, Heba El Mawla
doaj   +1 more source

Influence of percentages of ethanol alcohol on the acidity and basal of various imines derived from N-formylpipridine [PDF]

open access: yesمجلة التربية والعلم, 2012
The project describes the influence of five different percentages of ethanol in a range between (10-50)% in a mixture of ethanol-water on the acidity of thirteen imines as derived from N-formyl-pipyridine. These five percentages of ethanol-water mixtures
Adel Azzouz, Heba El Mawla
doaj   +1 more source

Electronic interaction and oxygen vacancy engineering of g-C3N4/α-Bi2O3 Z-scheme heterojunction for enhanced photocatalytic aerobic oxidative homo-/hetero-coupling of amines to imines in aqueous phase

open access: yesGreen Carbon, 2023
Photocatalytic oxidation coupling of amines represents a green and cost-effective method for the synthesis of highly value-added imines under visible light irradiation. However, the catalytic efficiency was severely limited by poor visible light response
Yanhua Gao   +4 more
doaj   +1 more source

Copper-Catalyzed Syntheses of 3‑Allyl-3-arylthioindolin-2-imines and 3‑Allenyl-3-arylthioindolin-2-imines from 3‑Diazoindolin-2-imines [PDF]

open access: yes, 2018
3-Allyl-3-arylthioindolin-2-imines and 3-allenyl-3-arylthioindolin- 2-imines were synthesized via the copper-catalyzed reaction of 3-diazoindolin-2-imines with allyl and propargyl aryl sulfides, respectively.
Yanguang Wang (1412947)   +3 more
core   +3 more sources

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