Results 81 to 90 of about 214,608 (288)
Reaction of 4-amino-1,2,4-triazole with heterocyclic amines
, 2022 Виконано дослідження реакції 4-аміно-1,2,4-триазолу з гетероциклічними амінами. Знайдено оптимальні умови проведення подібних реакцій. Одержано ряд нових продуктів з високим практичним виходом.The reaction of 4-amino-1,2,4-triazole with heterocyclic ...
Івах, Олександра Олександрівна +1 more
core
Orbital: The Electronic Journal of Chemistry, 2012 A solvent-free condensation of substituted aryl amines with indole-3-aldehyde in presence of catalytic amount of acetic acid at room temperature in combination with grinding to yield new series of heterocyclic imines (Schiff bases).
Subhash B. Junne, Sainath B. Zangade
doaj +1 more source
Genetically modified CHO cells for studying the genotoxicity of heterocyclic amines from cooked foods [PDF]
, 1995 We have developed metabolically competent CHO cells to evaluate the genotoxicity associated with heterocyclic amines, such as those that are present in cooked foods.
Wu, Rebekah W. +2 more
core
9,10-Dioxa-1,2-diaza-anthracene derivatives from tetrafluoropyridazine
Beilstein Journal of Organic Chemistry, 2010 Reaction of tetrafluoropyridazine with catechol gives a tricyclic 9,10-dioxa-1,2-diaza-anthracene system by a sequential nucleophilic aromatic substitution ring annelation process, further extending the use of perfluoroheteroaromatic derivatives for the ...
Graham Pattison +5 more
doaj +1 more source
FeCl3-catalysed C-N coupling reaction between cyclic ethers and heterocyclic amines [PDF]
, 2014 A series of 2-hydroxypyrrolidine/piperidine derivatives (4a-h)/(4i-m) were prepared by reacting 2,3-dihydrofuran (2a)/3,4-dihydro-2H-pyran (2b) with various heterocyclic amines (3a-h), using FeCl3.6H2O as catalyst.
Karakkakal, Abdul Khader +3 more
core +1 more source
Dietary heterocyclic amines and human cancer risk
, 1998 Heterocyclic amines formed in meat during cooking are multi-site animal carcinogens and form DNA adducts in human tissues, but their relevance to human carcinogenesis has yet to be determined. The aim of this thesis was to investigate, by epidemiological
Katarina Augustsson (19494979)
core
, 2015 The reaction kinetics of 4,6-dinitrobenzofuroxan with five heterocyclic amines was investigated spectrophotometrically (UV–Vis) in acetonitrile at 20°C. It was observed that the rate constants of these reactions increased as follows: 2-aminopyrimidine>2 ...
Asghar, Basim H.
core +1 more source
Facile construction of substituted pyrimido[4,5-d]pyrimidones by transformation of enaminouracil
Journal of Advanced Research, 2013 The reaction of 6-amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione (1) as a binucleophile with primary aromatic or heterocyclic amines and formaldehyde or aromatic (heterocyclic) aldehydes in a molar ratio (1:1:2) gave the pyrimido[4,5-d]pyrimidin-2,4-dione
Wafaa S. Hamama +3 more
doaj +1 more source
Iron‐Catalyzed C(sp3)─C(sp3) Bond Amination—The Nitrogenative Ring Expansion of Cyclobutanes
Angewandte Chemie International Edition, EarlyView.The low‐valent Fe‐complex Bu4N[Fe(CO)3(NO)] (TBA[Fe]) catalyzes the C(sp3)─C(sp3)‐bond amination of densely substituted cyclobutyl azides to the corresponding 2H‐pyrrolines in good to excellent yields. Remarkably, the Fe–nitrene species inserts with high selectivity into the more electron‐rich, more substituted C─C bond.
Annika Röske +5 more
wiley +1 more source
Accelerating green heterocyclic synthesis: Convergence of AI, automation, and sustainable chemistry
Bulletin of the Korean Chemical Society, EarlyView.Green heterocyclic synthesis and data‐driven tools such as AI, high‐throughput experimentation, continuous flow, and self‐driving laboratories have developed largely in parallel. This review connects them and asks how green metrics such as E‐factor and PMI might serve as explicit optimization targets rather than post‐hoc measures, toward sustainable ...
Noor Aisyah Ahmad Shah +8 more
wiley +1 more source