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11. Boric Acid As An Efficient Catalyst for the Synthesis of 1

Nano Silica Phosphoric Acid: An Efficient Catalyst for the One- Pot Synthesis of 1, 2, 4, 5-Tetrasubstituted Imidazoles

Nano Silica Phosphoric Acid: An Efficient Catalyst for the One- Pot Synthesis of 1, 2, 4, 5-Tetrasubstituted Imidazoles

... the synthesis of 1, 2, 4, 5- tetrasubstitutedimidazoles using nano-SPA as a reusable, eco- friendly, inexpensive, and efficient catalyst are ...

5

Zirconium Oxide Nanoparticles as an Efficient Catalyst for Three-Component Synthesis of Pyrazolo[1,2-A][1,2,4]Triazole-1,3-Diones Derivatives

Zirconium Oxide Nanoparticles as an Efficient Catalyst for Three-Component Synthesis of Pyrazolo[1,2-A][1,2,4]Triazole-1,3-Diones Derivatives

... malononitrile 1 and arylaldehydes 2 in the presence of ZrO 2 NPs as the catalyst was afforded benzylidenemalononitrile 5 Then, Michael addition of 4-phenylurazole 3 to benzylidenemalononitrile 5 formed ...

5

Sulphamic Acid as an Efficient Catalyst for Synthesis of Thiosemicarbazone Derivatives at Room Temperature

Sulphamic Acid as an Efficient Catalyst for Synthesis of Thiosemicarbazone Derivatives at Room Temperature

... for synthesis of substituted thiosemicarbazone by using different aromatic aldehyde with a wide range of ortho, meta and para- substitutions in ethanol at room temperature starring conditions to establish the ...

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Silica Supported Zinc (Ii) Chloride (Sio2-Zncl2) As An Efficient Catalyst For The Eco-Friendly Synthesis Of 2,3-Dihydroquinazolin-4(1h)-Ones

Silica Supported Zinc (Ii) Chloride (Sio2-Zncl2) As An Efficient Catalyst For The Eco-Friendly Synthesis Of 2,3-Dihydroquinazolin-4(1h)-Ones

... the desired products (Table 2, Entries 1-10). The effect of the nature of substituent on the aromatic ring showed no noticeable effect on this translation as they were obtained in high yields with short reaction ...

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Magnetic Ionic Liquid [bmim][FeCl4] as an Efficient Catalyst for the Synthesis of 2-Aryl Benzimidazoles and 2-Aryl Benzothiazoles Derivatives

Magnetic Ionic Liquid [bmim][FeCl4] as an Efficient Catalyst for the Synthesis of 2-Aryl Benzimidazoles and 2-Aryl Benzothiazoles Derivatives

... In order to investigate the catalytic ability of the MIL, the condensation of benzene-1,2- diamine with 4-nitrobenzaldehyde was chosen as the model reaction in different conditions. As seen in Table 1, the most ...

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Phospho Sulfonic Acid Catalyzed Synthesis of Benzimidazole, Benzoxazole and Quinoxaline Derivatives under Green Solvent at Ambient Temperature

Phospho Sulfonic Acid Catalyzed Synthesis of Benzimidazole, Benzoxazole and Quinoxaline Derivatives under Green Solvent at Ambient Temperature

... the synthesis of organic semiconductors [33], wide application in dyes [34], and also applied for the extraction of metal cations ...solid acid catalyst for the synthesis of indazolo[1,2-b]- ...

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				SALICYLIC ACID AS AN EFFICIENT CATALYST FOR THE DIASTEREOSELECTIVE SYNTHESIS OF DISPIROHYDROQUINOLINES VIA A ONE-POT DOMINO EIGHT-COMPONENT REACTION

← Return to Article Details SALICYLIC ACID AS AN EFFICIENT CATALYST FOR THE DIASTEREOSELECTIVE SYNTHESIS OF DISPIROHYDROQUINOLINES VIA A ONE-POT DOMINO EIGHT-COMPONENT REACTION

... Multicomponent reactions (MCRs) are one-pot processes in which three or more reactants come together in a single reaction vessel to form a product containing substantial elements of all the reactants [1-4]. In the ...

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A Facile and Potent Synthesis of 4-thiazolidinones from
2-hydroxy-1-naphthaldehyde and Amino Acid
Based Schiff Bases

A Facile and Potent Synthesis of 4-thiazolidinones from 2-hydroxy-1-naphthaldehyde and Amino Acid Based Schiff Bases

... direct synthesis of 4-thiazolidinones from 2-hydroxy-1-naphthaldehyde and amino acid based Schiff bases were ...amino acid Schiff bases with thioglycolic acid in the presence of DMF and ...

6

One pot synthesis of Bis-coumarin derivatives by using mixture of dodecyl benzene sulfonic acid and sodium benzyl dodecyl sulphateas an efficient catalyst in water

One pot synthesis of Bis-coumarin derivatives by using mixture of dodecyl benzene sulfonic acid and sodium benzyl dodecyl sulphateas an efficient catalyst in water

... during synthesis of coumarin like use of organic solvents, laborious workup, increasing cost of reaction, long reaction time with low ...involves acid catalysts like In(OTf) 3 , LiClO 4 , KHSO 4 , ...

7

STUDIES DIRECTED TOWARDS THE TOTAL SYNTHESIS OF FR-901464 AND DEVLOPMENT OF NOVEL SYNTHETIC METHODOLOGIES

STUDIES DIRECTED TOWARDS THE TOTAL SYNTHESIS OF FR-901464 AND DEVLOPMENT OF NOVEL SYNTHETIC METHODOLOGIES

... highly efficient catalyst for the allylation of aldehydes with allylstannes under neutral conditions (Scheme ...afforded 1-phenyl-3- buten-1ol in 95% ...

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CuO Nanoparticles as an Efficient Catalyst for the Synthesis of Flavanones

CuO Nanoparticles as an Efficient Catalyst for the Synthesis of Flavanones

... an efficient catalyst for the synthesis of flavanones derivatives from the reactions between 2-hydroxyacetophenones and aromatic aldehydes at room ...FT-IR, 1 HNMR, 13 CNMR and ...

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Nano-Silica Phosphoric Acid: An Efficient Catalyst for One-Pot Synthesis of Tetrahydrobenzo[a]xanthenes-11-one Under Solvent- Free or Sonication Conditions

Nano-Silica Phosphoric Acid: An Efficient Catalyst for One-Pot Synthesis of Tetrahydrobenzo[a]xanthenes-11-one Under Solvent- Free or Sonication Conditions

... 2.2. Typical procedures for the preparation of tetrahydrobenzo[a]xanthenes-11-one in the presence of nano-SPA. A mixture of 2-naphthol (1 mmol), aldehyde (1 mmol), 1, 3-diketone (1.2 mmol), ...

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Tetrabutylammonium Bromide: An Efficient Catalyst for the Synthesis of Xanthenediones under Solvent-free Conditions

Tetrabutylammonium Bromide: An Efficient Catalyst for the Synthesis of Xanthenediones under Solvent-free Conditions

... A mixture of aromatic aldehydes (1 mmol), 5,5-dimethyl-1, 3-cyclohexanedione (2.2 mmol) and TBAT(40 mol%) under solvent-free conditions was heated at 120 °C and stirred for the required time (Table 2). ...

5

Sulfonic acid-functionalized polyallylamine (sevelamer) as an efficient reusable strong solid acid catalyst for the synthesis of xanthenes derivatives

Sulfonic acid-functionalized polyallylamine (sevelamer) as an efficient reusable strong solid acid catalyst for the synthesis of xanthenes derivatives

... organic synthesis and the industrial manufacture of materials is of increasing importance ...Heterogeneous acid catalysts such as solid acid zeoilte, solid superacid sulfated zirconia and Nafion have ...

7

Boric acid Catalyzed efficient Synthesis of Dipyrromethanes in Water

Boric acid Catalyzed efficient Synthesis of Dipyrromethanes in Water

... organic synthesis in aqueous medium is receiving more attention in terms of its green aspects 15 .... Boric acid is also considered as an ecofriendly reagent due to its excellent solubility in water, ...

5

Silica gel Supported Boric tri-Sulfuric Anhydride (SiO2-BTSA): an Efficient Catalytic System for the Synthesis of Phloroglucide analogs as Antimicrobial Agents

Silica gel Supported Boric tri-Sulfuric Anhydride (SiO2-BTSA): an Efficient Catalytic System for the Synthesis of Phloroglucide analogs as Antimicrobial Agents

... water. Boric acid ...chlorosulfonic acid (8.74 g, 5 mL, 75 mmol) was added dropwise over a period of 1 hr at room temperature; HCl evolved ...for 1 h, while the residual HCl was ...

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Synthesis of fatty ethanolamides from lauric and palmitic acid: 
		Optimization using Response Surface Methodology

Synthesis of fatty ethanolamides from lauric and palmitic acid: Optimization using Response Surface Methodology

... ratio, catalyst concentration, and solvent ...the synthesis of lauroyl ethanolamide, were the optimum condition for maximum yield of lauroyl and palmitoyl ethanolamide were obtained at ...

8

Silica Sulfuric Acid as a Efficient and Recyclable Solid Acid Catalyst for the One-Pot Synthesis of 2,4,6-Triaylpyridines Under Solvent Free Conditions

Silica Sulfuric Acid as a Efficient and Recyclable Solid Acid Catalyst for the One-Pot Synthesis of 2,4,6-Triaylpyridines Under Solvent Free Conditions

... derivative 1 (2mmol), arylaldehydes 2 (1mmol), ammonium acetate 3 ...as catalyst was heated at 120°C with stirring for 3h, and the solid product gradually ...The catalyst was filtrated and the ...

5

Novel procedure for preparation of Hantzsch 1, 4- dihydropyridines using PEG-400 as a reaction medium and under catalyst-free condition

Novel procedure for preparation of Hantzsch 1, 4- dihydropyridines using PEG-400 as a reaction medium and under catalyst-free condition

... found many applications in organic transformations[4]. These ubiquitous features always encourage synthetic chemist to explore improved protocol for the synthesis of DHPs. In the literature, various procedures for ...

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Boric acid promoted an efficient and practical synthesis of fused pyrimidines in aqueous media

Boric acid promoted an efficient and practical synthesis of fused pyrimidines in aqueous media

... of boric acid has severely reduced the reaction time and yields are ...the synthesis of new molecules which are not synthesized ...be efficient on a multigram scale which can be transforming ...

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