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Characterization and application of pyrazinium di(hydrogen sulfate) as a highly efficient catalyst for synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes, 9-aryl-1,8-dioxo-octahydroxanthenes and 1-amidoalkyl/carbamatoalkyl-2-naphthols
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نویسنده
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Zare A. ,Ahmadi S. ,Abi F. ,Hekmat-Zadeh T. ,Merajoddin M. ,M. Hatami M. ,Keshtkar M. ,Khazaei A.
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منبع
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scientia iranica - 2015 - دوره : 22 - شماره : 6-C2 - صفحه:2271 -2281
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چکیده
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In this work, characterization of br nsted acidic ionic liquid namely pyrazinium di(hydrogen sulfate) fpyh2(hso4)2g using 1h and 13c nmr, mass, thermogravimetry (tg), and derivative thermogravimetry (dtg) data is achieved. afterward, it is used as a highly ecient, green, and homogeneous catalyst to promote the following organic transformations under solvent-free conditions: (i) the synthesis of 14-aryl-14hdibenzo[ a,j]xanthenes from 2-naphthol and arylaldehydes; (ii) the preparation of 9-aryl-1,8- dioxo-octahydroxanthenes by the reaction of dimedone (5,5-dimethyl-1,3-cyclohexanedione) with arylaldehydes, and (iii) the synthesis of 1-amidoalkyl/carbamatoalkyl-2-naphthols by the condensation of 2-naphthol with aromatic aldehydes and amide derivatives/alkyl carbamates.
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کلیدواژه
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Br nsted acidic ionic liquid; Pyrazinium di(hydrogen sulfate) fPyH2(HSO4)2g; 14-aryl-14Hdibenzo[ a; j]xanthenes; 9-aryl-1 ,8-dioxooctahydroxanthene; 1-amidoalkyl-2- naphthol; 1-carbamatoalkyl-2- naphthol.
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آدرس
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payame noor university, Department of Chemistry, ایران, payame noor university, Department of Chemistry, ایران, payame noor university, Department of Chemistry, ایران, payame noor university, Department of Chemistry, ایران, payame noor university, Department of Chemistry, ایران, payame noor university, Department of Chemistry, ایران, payame noor university, Department of Chemistry, ایران, bu ali sina university of hamadan, Faculty of Chemistry, ایران
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Authors
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