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المقاله
1 - Lactic acid-catalyzed Eco-friendly Cyclization Reaction for the Synthesis of 4H-benzo[b]pyrans and 3,4-dihydropyrano[c]chromenes in EtOH/H2O as an Efficient Green Reaction MediumJournal of Applied Chemical Research , العدد 4 , السنة 14 , تابستان 2020An environmentally friendly, green, and highly efficient process for the synthesis of biologically and pharmacologically 4H-benzo[b]pyrans and 3,4-dihydropyrano [c] chromenes is developed by condensing cyclic aromatic aldehydes, malononitrile, and dimedone or 4‐hydroxyc أکثرAn environmentally friendly, green, and highly efficient process for the synthesis of biologically and pharmacologically 4H-benzo[b]pyrans and 3,4-dihydropyrano [c] chromenes is developed by condensing cyclic aromatic aldehydes, malononitrile, and dimedone or 4‐hydroxycoumarin in the presence of lactic acid as an efficient and green catalyst. The corresponding products have been synthesized in 50–97% yield in middle condition reaction which confirmed the excellent catalytic activity of the lactic acid. Furthermore, this methodology shows unique advantages, such as operational simplicity, short reaction time, high yields, low cost, absence of any tedious workup or purification and avoidance of hazardous or toxic reagents/catalysts/solvents. تفاصيل المقالة -
المقاله
2 - Synthesis of Pyrazolopyranopyrimidine and Dihydropyrano[2,3-c]pyrazole Derivatives using Vitamin D as an Efficient Catalyst under Green ConditionJournal of Applied Chemical Research , العدد 1 , السنة 17 , زمستان 2023An efficient, rapid, and eco-friendly protocol for one-pot, four-component preparation ofdihydropyrano[2,3-c]pyrazole and pyrazolopyranopyrimidine derivatives has been developed usingvitamin D as an efficient catalyst. This method involves several advantages such as low أکثرAn efficient, rapid, and eco-friendly protocol for one-pot, four-component preparation ofdihydropyrano[2,3-c]pyrazole and pyrazolopyranopyrimidine derivatives has been developed usingvitamin D as an efficient catalyst. This method involves several advantages such as low-cost andnon-toxic catalysts, high yields of products, simple workup, no hazardous solvent, and no need forcolumn chromatography. تفاصيل المقالة -
المقاله
3 - A facile one-pot four-component synthesis of dihydropyrrol-2-ones using Cl3CCO2HIranian Journal of Catalysis , العدد 1 , السنة 5 , زمستان 2015A convenient synthesis of different types of polyfunctional dihydropyrrol-2-ones via one-pot four component reactions of formaldehyde, dialkyl acetylenedicarboxylates and amines, catalyzed by trichloroacetic acid (Cl3CCO2H) at room temperature has been investigated. The أکثرA convenient synthesis of different types of polyfunctional dihydropyrrol-2-ones via one-pot four component reactions of formaldehyde, dialkyl acetylenedicarboxylates and amines, catalyzed by trichloroacetic acid (Cl3CCO2H) at room temperature has been investigated. The significant advantages of this synthetic method are mild reaction conditions, available and inexpensive material, short reaction times, good yields, simple work-up. تفاصيل المقالة -
المقاله
4 - Maltose as a green catalyst for the synthesis of 3,4,5-substituted furan-2(5H) ones in waterFaranak Farhadpour Nourallah Hazeri Sajjad Salahi Parvaneh Dastoorani Razieh Doostmohammadi Mojtaba Lashkari Majid Ghashang Malek Taher MaghsoodlouIranian Journal of Catalysis , العدد 5 , السنة 4 , پاییز 2014Maltose as an efficient, available, cheap and eco-friendly catalyst has been applied for the synthesis of 3,4,5-substituted furan-2(5H)one derivatives via a one-pot three-component reaction of arylamines, aromatic aldehydes and dialkyl acetylenedicarboxylates in water. أکثرMaltose as an efficient, available, cheap and eco-friendly catalyst has been applied for the synthesis of 3,4,5-substituted furan-2(5H)one derivatives via a one-pot three-component reaction of arylamines, aromatic aldehydes and dialkyl acetylenedicarboxylates in water. This method has notable advantages in terms of simple workup, no need for column chromatography, short reaction time and high yields. تفاصيل المقالة -
المقاله
5 - Chloroacetic acid-promoted heterocyclic reactions: Efficient preparation of tetrahydropyridines and 2,3-dihydroquinazolin-4(1H)-onesMalek Taher Maghsoodlou Nourallah Hazeri Elham Fereidooni Sajjad Salahi Nasrin Mahmoudabadi Naeime Khorshidi Jasem Aboonajmi Mojtaba LashakriIranian Journal of Catalysis , العدد 4 , السنة 5 , تابستان 2015Facile and versatile procedures have been explored for the synthesis of tetrahydropyridines and 2,3-dihydroquinazolin-4(1H)-ones. These protocols employ the one-pot multi-component condensation of arylaldehydes and aromatic amines with β-keto esters and isatoic anh أکثرFacile and versatile procedures have been explored for the synthesis of tetrahydropyridines and 2,3-dihydroquinazolin-4(1H)-ones. These protocols employ the one-pot multi-component condensation of arylaldehydes and aromatic amines with β-keto esters and isatoic anhydride in chloroacetic acid, respectively. The reactions proceeded smoothly to generate the corresponding products in high yield. We have found that the use of chloroacetic acid as catalyst results in a remarkable beneficial effect on the reaction, allowing it to be performed without the need of any co-catalyst, which is the case in other similar reported methodologies. In addition, the preparation of 2,3-dihydro-4(1H)-quinazolinones derivatives from the reaction of arylaldehydes and anthranilamide in the presence of mentioned catalyst is reported. تفاصيل المقالة -
المقاله
6 - Multicomponent preparation of highly functionalized piperidines using FeCl3.6H2O as an efficient catalystJasem Aboonajmi Malek Taher Maghsoodlou Nourallah Hazeri Mojtaba Lashkari Mohyeddin Safarzaei Moheb ShirzaeiIranian Journal of Catalysis , العدد 1 , السنة 5 , زمستان 2015FeCl3.6H2O was used as an efficient catalyst for the synthesis of highly functionalized piperidines via a one-pot five-component reaction of aromatic amines, aromatic aldehydes and β-keto esters in EtOH at room temperature. The remarkable advantages offered by this أکثرFeCl3.6H2O was used as an efficient catalyst for the synthesis of highly functionalized piperidines via a one-pot five-component reaction of aromatic amines, aromatic aldehydes and β-keto esters in EtOH at room temperature. The remarkable advantages offered by this method are good yields, simple procedure, short reaction times, no need to column chromatography and easy work-up. The structures of all compounds were characterized by comparison of their IR and NMR spectra with authentic samples. Also, the relative stereochemistry of these piperidines has been confirmed by single X-ray crystallography analysis in previously reported literature. Starting materials with electron-deficient or electron-releasing groups were reacted efficiently. تفاصيل المقالة -
المقاله
7 - Oxalic acid dihydrate catalyzed synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives under thermal and solvent-free conditionsIranian Journal of Catalysis , العدد 2 , السنة 6 , بهار 2016Oxalic acid dihydrate as a green, mild and efficient catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives from the reaction between β-keto esters (methyl or ethyl acetoacetate), aromatic aldehyde (benzaldehye d أکثرOxalic acid dihydrate as a green, mild and efficient catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives from the reaction between β-keto esters (methyl or ethyl acetoacetate), aromatic aldehyde (benzaldehye derivatives) and urea or thiourea under thermal and solvent-free conditions with excellent yields and short reaction time is studied. The most remarkable benefits of this synthetic method include the green methodology, an eco-friendly, inexpensive and non-toxic catalyst, solvent-free conditions, the availability of materials, and a simple operational procedure with no column chromatographic separation. The products were characterized by melting points, IR and 1H NMR spectroscopy. تفاصيل المقالة