Ultrasound-assisted the three-component synthesis of spiro[4H-pyrano[3,2-c]quinolin-4,3′-indoline]-2′,5(6H)-diones in water
作者:Shaghyegh Gholizadeh、Koorosh Radmoghadam
DOI:10.13005/ojc/290450
日期:2013.12.30
A simple and efficient synthesis of the titled spirooxindoles was accomplished via the three-component reaction between isatins, 4-hydroxy-2H-quinolin-2-one, and malononitrile or ethylcyanoacetate in aqueous medium under ultrasound irradiation.
‘Solvent-free’ and ‘on-solvent’ multicomponent reaction of isatins, malononitrile, and bicyclic CH-acids: fast and efficient way to medicinal privileged spirooxindole scaffold
作者:Michail N. Elinson、Anatoly N. Vereshchagin、Fedor V. Ryzhkov、Yuliya E. Anisina
DOI:10.24820/ark.5550190.p010.640
日期:——
The fast (15 min) PASE-'solvent-free' and 'on-solvent' multicomponentreactions of isatins, malononitrile and bicyclicCH-acids catalyzed by sodium acetate result in efficient formation of substituted spiro-oxindoles in 90– 98% yields. These methods are fastmulticomponent approaches to the spiro-oxindoles, substances with promising anticancer activities. These new 'solvent-free' and 'on-solvent' techniques