614-47-1Relevant articles and documents
-
Noyce,Pryor
, p. 1397 (1955)
-
SYNTHESIS OF (2,4,6-CYCLOHEPTATRIEN-1-YLIDENE)METHYL TRIPHENYLPHOSPHONIUM TETRAFLUOROBORATE: A STRONGLY STABILIZED YLIDE ?
Cavicchio, G.,Gaudiano, G.,Ponti, P. P.
, p. 2333 - 2336 (1980)
The synthesis of (cycloheptatrienylmethyl)triphenylphosphonium tetrafluoroborates is reported.Hydride abstraction to the corresponding tropylium salt followed by proton abstraction afforded the title compound IIIa which shows little, if any, ylidic charachter.
Solvent-free synthesis of 4-chalcogenophosphorylpyridines via SN HAr reaction of pyridines with secondary phosphine chalcogenides
Volkov, Pavel A.,Ivanova, Nina I.,Khrapova, Kseniya O.,Telezhkin, Anton A.,Borodina, Tatyana N.,Gusarova, Nina K.,Trofimov, Boris A.
, p. 582 - 583 (2018)
Solvent- and catalyst-free synthesis of 4-chalcogenophosphorylpyridines by oxidative regioselective cross-coupling of pyridines with secondary phosphine chalcogenides using 1,3-diphenylprop-2-yn-1-one as a trigger and oxidant under mild conditions (70–75°C, 5.5–7 h) is reported.
Iron-Catalyzed ?±,?-Dehydrogenation of Carbonyl Compounds
Zhang, Xiao-Wei,Jiang, Guo-Qing,Lei, Shu-Hui,Shan, Xiang-Huan,Qu, Jian-Ping,Kang, Yan-Biao
supporting information, p. 1611 - 1615 (2021/03/03)
An iron-catalyzed α,β-dehydrogenation of carbonyl compounds was developed. A broad spectrum of carbonyls or analogues, such as aldehyde, ketone, lactone, lactam, amine, and alcohol, could be converted to their α,β-unsaturated counterparts in a simple one-step reaction with high yields.
K2S2O8activation by glucose at room temperature for the synthesis and functionalization of heterocycles in water
Hunjan, Mandeep Kaur,Laha, Joydev K.
, p. 8437 - 8440 (2021/09/02)
While persulfate activation at room temperature using glucose has primarily been focused on kinetic studies of the sulfate radical anion, the utilization of this protocol in organic synthesis is rarely demonstrated. We reinvestigated selected K2S2O8-mediated known organic reactions that invariably require higher temperatures and an organic solvent. A diverse, mild functionalization and synthesis of heterocycles using the inexpensive oxidant K2S2O8 in water at room temperature is reported, demonstrating the sustainability and broad scope of the method. Unlike traditional methods used for persulfate activation, the current method uses naturally abundant glucose as a K2S2O8 activator, avoiding the use of higher temperature, UV light, transition metals or bases.
Inhibition of Caco-2 and MCF-7 cancer cells using chalcones: synthesis, biological evaluation and computational study
Aguilar, Luis F.,Coddou, Claudio,Jara-Gutierrez, Carlos,Mellado, Marco,Reyna-Jeldes, Mauricio,Villena, Joan,Weinstein-Oppenheimer, Caroline
supporting information, (2021/10/02)
Cancer is the second death cause worldwide, with breast and colon cancer among the most prevalent types. Traditional treatment strategies have several side effects that inspire the development of novel anticancer agents derived from natural sources, like chalcone derivatives. For this investigation, twenty-three chalcones (4a-w) were synthesized and evaluated as antiproliferative agents against MCF-7 and Caco-2 cells, finding three and two compounds with similar or higher antiproliferative activity than daunorubicin, while only two chalcones showed better selectivity indexes than daunorubicin on MCF-7. From these results, we developed good-performance QSAR models (r > 0.850, q2>0.650), finding several structural features that could modify chalcone activity and selectivity. According to these models, chalcones 4w and 4t have high potency and selectivity against Caco-2 and MCF-7, respectively, which make them attractive candidates for hit-to-lead development of ROS-independent pro apoptotic agents.
