%0 Journal Article %T Silica-bondedpropylpiperazine-N-sulfamicacidasrecyclablesolidacidcatalystforpreparationof2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromenesandhydroxy-substitutednaphthalene-1,4-dionederivatives %A Fahime Khorami %A Hamid Reza Shaterian %J ´ß»¯Ñ§±¨ %P 242-246 %D 2014 %R 10.1016/S1872-2067(12)60761-X %X £¿Anefficientmethodforthesynthesisof2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromenesandhydroxy-substitutednaphthalene-1,4-dionederivatives,usingsilica-bondedpropylpiperazine-N-sulfamicacidasasolidacid,green,heterogeneouscatalyst,underambientandsolvent-freeconditions,isdescribed.Asimpleprocedure,highyields,shortreactiontime,safety,andreusabilityofthecatalystareadvantagesoftheseprotocols. %K Silica-bondedpropylpiperazine-N-sulfamicacid %K Aldehyde %K Malononitrile %K Amine %K Solvent-free %K 2-Hydroxynaphthalene-1 %K 4-dione %U http://www.chxb.cn/CN/abstract/abstract21220.shtml