Nano-FGT: a green and sustainable catalyst for the synthesis of spirooxindoles in aqueous medium
作者:Ramen Jamatia、Ajay Gupta、Amarta Kumar Pal
DOI:10.1039/c5ra27552k
日期:——
glutathione grafted nano-organocatalyst (nano-FGT) was used as an efficientcatalyst for the synthesis of spirooxindolederivatives. An aqueous medium, easy separation by an external magnet, efficientcatalyst reusability, low catalyst loading, and column chromatography free separation of the product makes the present procedure green, sustainable and economically viable. The TON and TOF of the nanocatalyst
谷胱甘肽接枝的纳米有机催化剂(nano-FGT)被用作合成螺恶英吲哚衍生物的有效催化剂。水性介质,易于被外部磁体分离,有效的催化剂可重复使用性,低的催化剂负载量以及产物的无柱色谱分离使本发明方法绿色,可持续且经济可行。纳米催化剂的TON和TOF分别达到850 000和56 667 min -1。
Synthesis of spiro[indoline-3,4′-pyrano[2,3-c]pyrazole] and spiro[indoline-3,4′-pyrano[2,3-c]chromene] derivatives using silica-bonded ionic liquids as a recyclable catalyst in aqueous medium
recyclable catalyst for the synthesis of spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles] via one-pot condensation reaction of isatin, activated methylene reagents, and 3-methyl-l-phenyl-5-pyrazolone in refluxing aqueous medium in good to high yields. Also, these silica-bonded ionic liquids were used as catalysts for the synthesis of spiro[indoline-3,4′-pyrano[2,3-c]chromene derivatives in refluxing aqueous medium
N-Sulfonic acid modified poly(styrene-co-maleic anhydride): an efficient and recyclable solid acid catalyst for the synthesis of a wide range of spiropyrans
作者:Majid M. Heravi、Elaheh Hashemi、Fereshteh Azimian
DOI:10.1007/s13738-014-0523-6
日期:2015.4
N-Sulfonic acid modified poly(styrene-co-maleic anhydride) as a recyclable solid acid catalyst efficiently catalyzed the one-pot three-component synthesis of spiropyran derivatives through a simple, convenient, and cost-effective approach in good yields and selectivity. .
A new InCl3-catalyzed, facile and efficient method for the synthesis of spirooxindoles under conventional and solvent-free microwave conditions
作者:Gnanamani Shanthi、Ganesan Subbulakshmi、Paramasivan T. Perumal
DOI:10.1016/j.tet.2006.12.042
日期:2007.2
A simple and efficient method for the one-pot three-component synthesis of new spirooxindoles underconventional and solvent-free microwave irradiation is described.
描述了一种简单有效的方法,用于在常规和无溶剂微波辐射下一锅三组分合成新的螺毒素。
Ultrasound Promoted Green Synthesis of Spiro Indoline-3,4′-pyrano[2,3-<i>c</i>]pyrazoles
作者:S. F. Hojati、S. Mohamadi
DOI:10.1080/00304948.2020.1762458
日期:2020.7.3
Pyranopyrazoles make up one of the interesting classes of oxygen-containing heterocycles 1 known to have valuable medicinal properties such as anti-dysplasia, hypoglycaemic, 2 anti-microbial, 3 ant...