%0 Journal Article %T Poly(4-vinylpyridinium)hydrogensulfate:Anovelandefficientcatalystforthesynthesisof13-aryl-indeno[1,2-b]naphtha[1,2-e]pyran-12(13H)-onesundersolvent-freeconditions %A Majid Ghashang %A Syed Sheik Mansoor %A Krishnamoorthy Aswin %J ´ß»¯Ñ§±¨ %P 43-48 %D 2014 %R 10.1016/S1872-2067(12)60707-4 %X £¿Anfacileandefficientprotocolforthesynthesisof13-aryl-indeno[1,2-b]naphtha[1,2-e]pyran-12(13H)-oneshasbeendevelopedthatproceedsviatheone-potthree-componentsequentialreactionofanaromaticaldehydewith¦Â-naphtholand2H-indene-1,3-dioneundersolvent-freeconditionsinthepresenceofapoly(4-vinylpyridinium)hydrogensulfate(P(4-VPH)HSO4)catalyst.Thecatalystcanbereusedseveraltimes,makingthisprocedurefacile,practical,andsustainable.Thesimpleexperimentalprocedure,solvent-freereactionconditions,useofaninexpensivecatalyst,shortreacttime,andexcellentyieldsaresomeofthemajoradvantagesofthismethodology. %K Poly(4-vinylpyridinium)hydrogensulfate %K Indenonaphthopyrans %K 2H-indene-1 %K 3-dione %K ¦Â-Naphthol %U http://www.chxb.cn/CN/abstract/abstract21207.shtml