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SiO2 as antifungal agents and tautomerism theoretical study of some products, Farmacia, , 62, Sreedhar, A. Kumar and D. Yada, CuFe2O4 nanoparticles: a magnetically recoverable and reusable catalyst for the synthesis of 5-substituted 1H-tetrazoles, Tetrahedron Lett. Nanjundaswamy and H. Varadaraji, S. Suban, V. Ramasamy, K. Kubendiran, J. Raguraman, S. Nalilu and H.
Pati, Synthesis and evaluation of a series of 1-substituted tetrazole derivatives as antimicrobial agents, Org. As shown in Table 4 , the catalyst can be reused for many consecutive times without considerable decline in its catalytic activity.
To determine the amount of leached Cu from CDSCS, the copper content of catalyst was determined using inductively coupled plasma ICP analysis for both fresh and reused catalyst after 5 runs.
Based on the ICP results, the leached Cu was found to be 0. Conclusions In conclusion, we have described a convenient protocol for facile and high yield synthesis of the new structurally diverse 5-substituted-1H-tetrazoles utilizing CDSCS as a highly efficient heterogeneous nano-catalyst. The use of ecofriendly solvent, the reusability of the catalyst, the simplicity of the process, cheapness, and applicability in preparative scale are benefits that can be mentioned for current synthetic protocol.
Experimental General All chemicals were purchased from either Fluka or Merck. To an oven-dried tube under nitrogen. Microwave radiation was discovered as a method of heating as early as and commercial domestic microwave oven was also introduced.
It was used in chemistry since s and it was introduced to organic synthesis An innovative and safe method for the synthesis of tetrazoles based on the addition of sodium azide to nitriles using a stoichiometric amount of Zn ii salts Chemical modification of polyacrylonitrile with tetrazole.
The Chemistry of the Tetrazoles. Design, Synthesis, and Biological Evaluation of Tetrazole. Reaction of nitriles with sodium azide in the presence of ZnCl 2 under microwave activation MWA leads to the formation of 5-tetrazoles in high yields; therewith the process is 2—3 times shorter than the inactivated reaction. Keywords: Metal-organic framework, Microwave synthesis, Hydrothermal synthesis, Photocatalysis, Zinc Tetrazole metal-organic frameworks MOFs are a relatively new class of crystalline coordination polymers, which have the potential for innumerable of applications such as gas storage, chemical separation.
Both conventional heating and microwave irradiation was employed for the reaction. Advances in the synthesis of tetrazoles coordinated to metal ions Elena A. Popova, Rostislav E. Trifonov and Vladimir A. Ostrovskii St. An efficient synthetic procedure has been achieved for selective synthesis of 1,5-disubstituted tetrazoles and diaryl ureas from secondary amides in situ in the presence of NaN 3 and POCl 3 as solvent, both by conventional and microwave methods.
The reaction conditions were optimized to yield selectively either tetrazoles or urea derivatives from reasonable to excellent yields. Actions and organic synthesis? As tetrazoles of biological interests from iodides via nitriles Chapter 3 Microwave assisted synthesis of heterocycles-an. Reactions in microwave - YouTube. The microwave-assisted synthesis of 5-substituted 1H-tetrazoles Abstract. If you can t find a tool you re looking. Tetrazoles: LI.
Synthesis of 5-substituted tetrazoles. Selective synthesis of ureas and tetrazoles from amides. Microwave Synthesis of 5-Substituted 1H-Tetrazoles. A comparative study of the morphologies and photocatalytic. Joshi , a Rasika B. Mane , b Krishna R. Tetrazole was first prepared by the reaction of anhydrous hydrazoic acid and hydrogen cyanide under pressure.
Treatment of organic nitriles with sodium azide in the presence of iodine or silica-supported sodium bisulfate as a heterogeneous catalyst enables an advantageous synthesis of 5-substituted 1 H -tetrazoles. Encouraged by the intense research activity in the field of tetrazole and in pursuit of our continuing interest in developing greener methodologies by using microwave irradiations and metal salts11a, we envisioned the synthesis of 5-substituted 1H-tetrazole by milder lewis acid under the microwave influence.Yin, Tungstates: Welcome heterogeneous catalysts for the other of 5-substituted 1H-tetrazoles, J. Nikalge and B. Kolvari, N. Stoker of Novel Fungicidal Organomercurials Using. Kittur, Siblings on the synthesis of novel 2,4-thiazolidinedione derivatives with next-diabetic activity, IJPS,5.
Nasrollahzadeh, Synthesis of 5-aryl-amino-1H 2H -tetrazoles and 5-aminoaryl-1H-tetrazoles from secondary arylcyanamides in glacial acetic acid: a simple and efficient method, Turkish J. Based on the ICP results, the leached Cu was found to be 0.
The invention provides an aqueous phase synthesis method of 5-methyl tetrazole. References 1 S. Santos, G. Ni, F. General The chemicals were purchased from Merck and used without any additional purification.