فهرس المقالات Hassan Kefayati المقاله 1 - Synthesis and Characterization of New Poly(ether sulfones) from 4,4'-(arylpyridine-2,6-diyl)diphenol and Bis(fluorophenyl)sulfone 20.1001.1.20083815.2022.16.1.4.0 Kamran Mahooti Masoud Mokhtary Hassan Kefayati Journal of Applied Chemical Research , العدد 1 , السنة 16 , زمستان 2022 المقاله 2 - Cellulose sulfuric acid: an efficient biopolymer-based catalyst for the synthesis of 5H-dibenzo[b,i]xanthene-tetraones and spiro[dibenzo[b,i]xanthene-13,3'-indoline]-pentaones under solvent free conditions Seyyedeh Cobra Azimi Hassan Kefayati Iranian Journal of Catalysis , العدد 4 , السنة 3 , تابستان 2013
