an efficient synthesis of tetrahydrobenzo[b]pyran derivatives using naf as an efficient catalyst

nano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines

چکیده ندارد.

Synthesis of 2-arylbenzimidazole derivatives using nano montmorillonite clay as an efficient catalyst

Benzimidazoles are among the most important nitrogen-containing heterocyclic compounds that have many pharmaceutical applications, including antitumor, anticancer, anticorrosive, antibacterial, irritant and enzymatic interceptors. In this research, the synthesis of benzimidazoles by using o-phenylenediamine and aldehyde derivatives in the presence of the nano montemurillonite in solvent-free an...

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AlHMS as an efficient catalyst for the synthesis of chromenes derivatives

Catalytic activity of AlHMS was investigated as a cheap heterogeneous reusable catalyst in some multi-component reactions for the synthesis of various chromenes. Three-component reaction of 2-hydroxy-naphtoquinone with an aromatic aldehyde and dimedone or barbituric acid in H2O under reflux conditions was performed using AlHMS in relatively good yields. The approach was more extended using psue...

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AlHMS as an efficient catalyst for the synthesis of chromenes derivatives

Catalytic activity of AlHMS was investigated as a cheap heterogeneous reusable catalyst in some multi-component reactions for the synthesis of various chromenes. Three-component reaction of 2-hydroxy-naphtoquinone with an aromatic aldehyde and dimedone or barbituric acid in H2O under reflux conditions was performed using AlHMS in relatively good yields. The approach was more extended using psue...

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The preparation of quinoxaline and 2,3-dihydropyrazine derivatives using selectfluor as an efficient and reusable catalyst

Selectfluor [1-(chloro methyl) -4-flouro -1,4-di azonia bicyclo[2,2,2] octane bis (tetraflouro-borate)] catalyzed the preparation of quinoxaline and 2,3-dihydo pyrazine derivatives through one -pot condensation of 1,2-di amines with 1,2-di carbonyls in solvent and under solvent- free conditions. This catalyst is commercially available, inexpensive, reusable, stable to air and moisture, and rela...

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Thiamine hydrochloride (vitamin B1) as an efficient catalyst for the synthesis of 4-(3H)-Quinazolinone derivatives using grinding method.

Herein we explore facile synthesis of 4-(3H)-Qunazolinone derivatives, achieved by the cyclocondensation of anthranilic acid, aromatic amines and triethyl orthoformate in presence of thiamine hydrochloride (Vitamin B1) as a catalyst, using grinding method. This protocol offers several advantages such as reusability of catalyst, excellent yield, shorter reaction time and economic availability.Qu...

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an efficient synthesis of tetrahydrobenzo[b]pyran derivatives using naf as an efficient catalyst

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nano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines

Synthesis of 2-arylbenzimidazole derivatives using nano montmorillonite clay as an efficient catalyst

AlHMS as an efficient catalyst for the synthesis of chromenes derivatives

AlHMS as an efficient catalyst for the synthesis of chromenes derivatives

The preparation of quinoxaline and 2,3-dihydropyrazine derivatives using selectfluor as an efficient and reusable catalyst

Thiamine hydrochloride (vitamin B1) as an efficient catalyst for the synthesis of 4-(3H)-Quinazolinone derivatives using grinding method.

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