e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Catalysis today
Solvent-free, one-pot, four-component synthesis of 2H-indazolo [2, 1-b] phthalazine-triones using sulfuric acid-modified PEG-6000 as a green recyclable and …
... Catalysis Today. ... using a number of substituted aromatic aldehydes in the presence of PEG (6000) -OSO 3 H as catalyst under the ... significant improvements with regard to the scope of the transformation, simplicity, and green aspects by avoiding expensive or corrosive catalysts. ...