fe(hso4)3/sio2: an efficient and heterogeneous catalyst for cyclization of 2- aminochalcones to 2- aryl-2,3- dihydroquinolin- 4(1h)- ones

نویسندگان

hossein eshghi

mohammad rahimizadeh

seyed mohsen mousavi

چکیده

silica ferric hydrogensulfate is an efficient heterogeneous catalyst for the cyclization of 2- aminochalcones to the corresponding 2,3-dihydroquinolin- 4(1h)-ones. this intramolecular aza michael reaction was carried out in high yields using chalcones bearing of electron donating and electron withdrawing groups. the catalyst is reusable without significant decreases in its activity after four times recycling.the present study represents the application of silica supported ferric hydrogensulfate as catalyst for the aza-michael cyclization of 2-aminochalcones to the corresponding 2-aryl-2,3-dihydroquinolone derivatives. therefore, the simplicity of the procedure, the mildness of the reaction conditions, high yields, the ease of catalyst separation and its re-usability demonstrates the ability of this method.

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Fe(HSO4)3/SiO2: An efficient and heterogeneous catalyst for cyclization of 2- aminochalcones to 2- aryl-2,3- dihydroquinolin- 4(1H)- ones

Silica ferric hydrogensulfate is an efficient heterogeneous catalyst for the cyclization of 2- aminochalcones to the corresponding 2,3-dihydroquinolin- 4(1H)-ones. This intramolecular aza Michael reaction was carried out in high yields using chalcones bearing of electron donating and electron withdrawing groups. The catalyst is reusable without significant decreases in its activity after four t...

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Fe(HSO4)3/SiO2: An efficient and heterogeneous catalyst for cyclization of 2- aminochalcones to 2- aryl-2,3- dihydroquinolin- 4(1H)- ones

Silica ferric hydrogensulfate is an efficient heterogeneous catalyst for the cyclization of 2- aminochalcones to the corresponding 2,3-dihydroquinolin- 4(1H)-ones. This intramolecular aza Michael reaction was carried out in high yields using chalcones bearing of electron donating and electron withdrawing groups. The catalyst is reusable without significant decreases in its activity after four t...

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عنوان ژورنال:
iranian journal of catalysis

ناشر: islamic azad university, shahreza branch

ISSN 2252-0236

دوره 4

شماره 4 2014

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