کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
67938 | 48499 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Molecular iodine: A versatile catalyst for the synthesis of bis(4-hydroxycoumarin) methanes in water Molecular iodine: A versatile catalyst for the synthesis of bis(4-hydroxycoumarin) methanes in water](/preview/png/67938.png)
Molecular iodine has been used an efficient catalyst for an improved and rapid one-pot synthesis of 3,3′-arylmethylenebis-(4-hydroxycoumarin) and 2,2′-arylmethylenebis(3-hydroxyl-5,5-dimethyl-2-cyclohexen-1-one) in excellent yields using water as a reaction medium. This aqua mediated Michael addition of various aromatic and heteroaromatic aldehydes with 4-hydroxycoumarin or dimedone using catalytic amount of molecular iodine devoids the use of expensive, corrosive reagents, toxic sovents and provides the operational simplicity.
Molecular iodine provides a simple, efficient, rapid and environmentally benign route for Michael addition of various aromatic and heteroaromatic aldehydes with 4-hydroxycoumarin or dimedone using water as a solvent. Figure optionsDownload as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 268, Issues 1–2, 1 May 2007, Pages 76–81