%0 Journal Article %T 4-(Succinimido)-1-butanesulfonicacidasaBr£¿nstedacidcatalystforthesynthesisofpyrano[4,3-b]pyranderivativesusingthermalandultrasonicirradiation %A Nader Ghaffari Khaligh %A Sharifah Bee Abd Hamid %J ´ß»¯Ñ§±¨ %P 728-733 %D 2015 %R 10.1016/S1872-2067(14)60307-7 %X £¿4-(Succinimido)-1-butanesulfonicacidwasshowntobeanefficientandreusableBr£¿nstedacidcatalystforthesynthesisofpyrano[4,3-b]pyranderivativesusingthermalandultrasonicconditions.Thecatalystwaspreparedbymixingsuccinimideand1,4-butanesultone,whichissimplerandsaferthanthepreparationofsuccinimidesulfonicacid.Thismethodhastheadvantagesofhighyield,cleanreaction,simplemethodology,andshortreactiontime.Thecatalystcanberecycledwithoutlossofactivity. %K Br£¿ %K nstedacid %K Pyrano[4 %K 3-b]pyran %K 4-Hydroxy-6-methylpyran-2-one %K Three-componentreaction %K One-potcondensation %U http://www.chxb.cn/CN/abstract/abstract21584.shtml