Tris-hydroxymethylaminomethane (THAM): An efficient organocatalyst in diversity-oriented and environmentally benign synthesis of spirochromenes
作者:Supriya S. Khot、Prashant V. Anbhule、Uday V. Desai、Prakash P. Wadgaonkar
DOI:10.1016/j.crci.2018.05.005
日期:2018.9
Résumé Tris-hydroxymethylaminomethane has been demonstrated to be an efficient organocatalyst in diversity-oriented synthesis of medicinally prevalent spirochromenes by one-pot, three-component reactions between isatins, malononitrile, and enolizable CH acids like dimedone, 4-hydroxycoumarin, 4-hydroxy-N-methylquinolin-2-one, or in situ generated 2-methylpyrazolon-2-one. Biodegradability and extremely low cost of the catalyst are the noteworthy features of this chromatography-free protocol. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.pdf