The development of knoevenagel-michael cyclocondensation through a single-electron transfer (SET)/energy transfer (EnT) pathway in the use of methylene blue (MB+) as a photo-redox catalyst
作者:Farzaneh Mohamadpour
DOI:10.1016/j.jphotochem.2022.114120
日期:2022.11
the Knoevenagel-Michael cyclocondensation of malononitrile, aryl aldehydes, and resorcinol, a multicomponent green tandem method for the metal-free synthesis of 2-amino-4H-chromene scaffolds was developed. At room temperature in an aqueous solvent, photo-excited state functions formed from methylene blue (MB+) were used as single-electron transfer (SET) and energy transfer (EnT) catalysts using visible
Ethylene Glycol as a Reusable and Biodegradable Solvent for the Synthesis of 2-Amino-4
<i>H</i>
-chromenes
作者:Farzaneh Mohamadpour
DOI:10.1080/00304948.2023.2239695
日期:2024.3.3
Published in Organic Preparations and Procedures International: The New Journal for Organic Synthesis (Vol. 56, No. 2, 2024)
发表于《国际有机制备和程序:有机合成新杂志》(第 56 卷,第 2 期,2024 年)
Bimetallic nanoparticles supported ionic liquid as an effective heterogeneous nanocatalyst for green synthesis of chromenes under solvent‐free conditions
作者:Somayeh Kazempour、Hossein Naeimi
DOI:10.1002/aoc.6903
日期:2022.12
In this research, a novel bimetallic nanoparticles supported by 1,3-bis (triethoxysilylpropyl) imidazolium hydrogen sulfate ionicliquid (Ni.Cu@SiO2.BSPIm/HSO4) are designed and prepared, and its catalytic activity is investigated in organic reaction. The prepared nanocatalyst was characterized using Fourier-transform infrared spectroscopy (FT-IR), energy-dispersive X-ray, thermogravimetric analysis
本研究设计并制备了1,3-双(三乙氧基甲硅烷基丙基)咪唑硫酸氢离子液体负载的新型双金属纳米粒子(Ni.Cu@SiO 2 .BSPIm/HSO 4),并研究了其在有机反应中的催化活性。 . 使用傅里叶变换红外光谱 (FT-IR)、能量色散 X 射线、热重分析、场发射扫描电子显微镜和 X 射线粉末衍射技术对制备的纳米催化剂进行了表征。该催化剂在通过缩合反应一锅法合成色烯衍生物中表现出很好的活性。产品纯度高,收率高,反应时间短。有机产物通过熔点、FT-IR 和1H 核磁共振分析。
4-Aryl-4<i>H</i>-Chromene-3-Carbonitrile Derivates: Synthesis and Preliminary Anti-Breast Cancer Studies
作者:Nancy Thomas、Subin Mary Zachariah、Prasanna Ramani
DOI:10.1002/jhet.2483
日期:2016.11
A series of new 4‐aryl‐4H‐chromene‐3‐carbonitrile derivatives were obtained by one‐pot synthesis using substituted benzaldehydes, malononitrile, and substituted phenols. All the synthesized compounds (1a, 1b, 1c, 1d, 1e) were screened in vitro for antioxidant and anticancer activities. Compounds 1c, 1d, 1e showed significant antioxidant activity in nitric oxide free radical scavenging method while compounds 1c and 1e showed significant activity in hydrogen peroxide free radical scavenging method. The other compounds showed significant to moderate activities in both the methods in comparison with ascorbic acid and butylated hydroxytoluene as standards. Compounds 1c, 1d, 1e exhibited good anticancer activity, using Michigan Cancer Foundation‐7 (MCF‐7) cell line, compared with those of other synthesized compounds.
KLOKOL G. V.; SHARANINA L. G.; NESTEROV V. N.; SHKLOVER V. E.; SHARANIN Y+, ZH. ORGAN. XIMII, 23,(1987) N 2, 412-421
作者:KLOKOL G. V.、 SHARANINA L. G.、 NESTEROV V. N.、 SHKLOVER V. E.、 SHARANIN Y+