Aromatic Aldehyde
An Efficient Synthesis of Functionalized 3-(α-amidobenzyl)-4-hydroxycoumarin Derivatives by ZnO Nanoparticles Promoted Condensation Reaction Between Aromatic Aldehyde, 4-hydroxycoumarin, and Amides
... An efficient and green protocol for the synthesis of 3-(α-amidobenzyl)-4-hydroxycoumarin derivatives by one pot, three component coupling reaction of aromatic aldehyde, 4- hydroxycoumarin, and amides has ...
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Synthesis, Characterization and Invitro Antimicrobial Investigation of Some Transition Metal Complexes with the Schiff Base of Aromatic Aldehyde
... complexes show a negative shift of the signal due to the NH group. This signal is observed at δ 8.0, 11.2 ppm in metal complexes, suggesting that the co-ordination proceeds through the carbonyl oxygen or azomethine ...
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Synthesis and Characterization of 3 - Substituted Coumarin Shatha F. Al- Zobaydi | Kawther Abdu Al-Hammed | Ban Dha. Ismael
... Schiff bases (k3-k4) are prepared when the (K2) reacts with two kinds of aromatic aldehyde (P- nitro benzaldehyd) and (o–Hydroxyl benzaldehyd). The FT-IR spectra in Figure (4) for (k3) and Figure (5) for ...
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ZnO catalyst for Knoevenagel condensation in aqueous medium at ambient temperature
... In conclusion, we have demonstrated that ZnO is efficient solid heterogeneous catalyst for Knoevenagel condensation of aromatic aldehyde with malononitrile and ethyl cyanoacetate in aqueous medium. Catalyst ...
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Zirconium Oxide Nanoparticles as an Efficient Catalyst for Three-Component Synthesis of Pyrazolo[1,2-A][1,2,4]Triazole-1,3-Diones Derivatives
... A mixture of malononitrile (1.0 mmol), aromatic aldehyde (1.0 mmol), 4-arylurazole (1.0 mmol), and nano-ZrO 2 (20 mol %) was heated at 100°C for 30-40 min. After completion of the reaction as indicated by ...
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A REVIEW ON THE SYNTHESIS AND BIOLOGICAL ACTIVITIES OF PIPERIDIN 4 ONES K P Greeshma * and S Muthulingam
... an aromatic aldehyde and ammonia or a primary amine, leading to the formation of 2,6-diaryl-4oxopiperidine-3,5- di-carboxylate or their N-substituted derivatives (Scheme 1) ...
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The Synthesis of 2,3-Dihydroquinazolin-4(1H)-Ones using Zinc Oxide Nanotubes Modified by Sio2 as A Catalyst with Recyclable Effect
... The characterization of the catalyst was done by XRD; it shows high-density defects on nano tubes surfaces (Fig. 2). Zinc oxide nano tubes modified by SiO 2 as catalyst were used to establish the reaction of synthesis of ...
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Metabolic engineering of Escherichia coli to high efficient synthesis phenylacetic acid from phenylalanine
... reduced aromatic aldehyde reduction (RARE) that does duty for a platform for aromatic aldehyde biosynthesis was used to prompt more PAA ...and aldehyde dehydrogenase H (AldH) ...
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Sonochemical synthesis of 2 arylbenzimidazoles using amberlite IR 120 Resin
... substituted aromatic aldehyde in acetonitrile gave a 96% yield at room temperature (Table 1, entry 14 and 7) but the synthesis in dichloromethane resulted in a poor yield ...
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Green approach for synthesizing Pyrimido pyrimidine moieties using TBAB
... An equimolar amounts of barbituric acid 3 (1mmol), an aromatic aldehyde 1a–l (1mmol), urea/thiourea 2a/2b (1mmol), and 3 mL of aqu. TBAB (1:1) were mixed thoroughly in a mortar. The reaction mixture was ...
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Aluminium Sulphate in PEG as a Green Recyclable Homogeneous Catalytic System to Synthesis of Amidoalkyl Naphthol
... β-naphthol, aromatic aldehyde and amide using aluminium sulphate in PEG-400 as catalyst for the preparation of amidoalkyl naphthol in good to excellent yield (Scheme ...
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Microwave Assisted Synthesis of Chalcone based 1,2,4-triazolo [1,5-a] Pyrimidines
... A mixture of the 5-amino-1,2,4-triazole (0.01 mol), 4- fluoro(or methyl)acetophenone (0.01 mol) and an appropriate aromatic aldehyde (0.01 mol) in glacial acetic acid (10 mL) was irradiated under microwave ...
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Modified Montmorillonite: An Active Heterogeneous Catalyst for the Synthesis of Benzimidazoles
... Acid treated modified montmorillonite clay was used as catalyst precursors for the synthesis of benzimidazoles through the room temperature stirring of aromatic aldehyde and o-phenylene- diamine. The ...
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Knoevenagel condensation at room temperature using SeO2/ZrO2 catalyst in water medium and solvent free conditions
... In this study used commercially available chemicals are used without any further purification. In a typical experimental procedure a mixture of aromatic aldehyde (2mmol) and malononitrile/ethyl cyanoacetate ...
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Synthesis and antitumor activity of novel pyrazolo[3,4 d]pyrimidin 4(5H) one derivatives
... To a suspension of compound 5 (2.98 g, 0.01 mol) in hot absolute ethanol (20 mL), the appropriate aromatic aldehyde (0.01 mol) and a catalytic amount of glacial acetic acid (0.5 mL) were added. The mixture ...
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Synthesis and characterization of some new 3, 5 disubstituted pyrazoline and isoxazoline derivatives
... The mixture of 4–Chloroacetanilide (1) (0.01mole) and different aromatic aldehyde like vaniline, p-hydroxy benzaldehyde, 4-chlorobenzaldehyde (2a-c)(0.01 mole) in ethanol (20ml) added drop wise 2.5ml NaOH ...
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SYNTHESIS OF NOVEL PYRIMIDINE AND FUSED PYRIMIDINE DERIVATIVES AND THEIR IN VITRO ANTIMICROBIAL AND CYTOTOXIC EVALUATION
... 1-Allyl-2-arylidenehydrazino-4-oxo-6-3,4,5-trimethoxyphenyl-1,4dihydropyrimidine-5-carbonitrile 5a-f General Procedure A mixture of 4 0.357g, 1mmol and the appropriate aromatic aldehyde [r] ...
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Facile Three component Synthesis of imidazo[4,5 b]indoles
... of aromatic aldehyde (1 mmol), indoline-2,3-dione and ammonium acetate (4 mmol) in ethanol (10 mL) in the presence of L-proline (5 mol%) was stirred at room temperature under ultrasonic waves for the ...
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Mg(Clo4)2 as A Recyclable Catalyst for Synthesis of 4H-Chromenes
... The 4H-choromen derivatives were obtained in excellent yield by three component of an aromatic aldehyde, dimedon and malonitril in the presence catalyst Mg(ClO 4 ) 2 as a lewis acid catalyst, in the ...
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Three Component Solvent-Free Synthesis and Fungicidal Activity of Substituted Pyrimido [4,5-D] Pyrimidine-2-(1h)-One
... substituted aromatic aldehyde and urea or thiourea in the presence of L-proline under microwave irradiation to afford a range of diversely functionalized pyrimido [4,5-d]pyrimidine-2-1H-one in good to ...
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