Magnetic, Acidic, Ionic Liquid-Catalyzed One-Pot Synthesis of Spirooxindoles
作者:Ali Khalafi-Nezhad、Somayeh Mohammadi
DOI:10.1021/co400080z
日期:2013.9.9
Magnetic, supported, acidic ionic liquid was synthesized and identified as an efficient catalyst for the one-pot synthesis of novel spirooxindole derivatives at mild conditions and in good yields. Three component reaction of wide variety of substituted isatins, 1,3-dimethyl-2-amino uracil, and barbituric acid, thiobarbituric acid, and dimedon as 1,3-dicarbonyl compounds gives the target compounds.
Dual role of the polymer supported catalyst PEG-OSO3H in aqueous reaction medium: synthesis of highly substituted structurally diversified coumarin and uracil fused spirooxindoles
作者:Sanjay Paul、Asish R. Das
DOI:10.1016/j.tetlet.2012.12.079
日期:2013.2
coumarin fused spirooxindole derivatives, making this strategy very useful in diversity-oriented synthesis (DOS). This synthesis was established to follow the group-assistant-purification chemistry process (GAP) avoiding traditional chromatography, whereupon recrystallization purifications appear to be a very good alternative to the traditional classical methods. The aqueous reactionmedium, dual role