A new series of structurally diverse azo fused dipyrazolopyridines has been synthesized via one pot pseudo six component reaction of various substituted aryl azo-salicylaldehydes with ethyl acetoacetate, hydrazine hydrate and ammonium acetate using waste orange peel derived carbon modified sulfonic acid (C-SO3H) as a mild, efficient and inexpensive heterogeneous catalyst. The prepared catalyst was characterized by FT-IR, XRD, SEM, EDX and XPS studies. The catalytically synthesized compounds were characterized by FT-IR, H NMR and C NMR. Use of recyclable powder catalyst (C-SO3H) for the excellent yields with rapid formation of the targeted azo fused dipyrazolopyridines with simple work-up procedure are the notable advantages of this protocol.
{"title":"Synthesis of Novel Azo Fused Dipyrazolopyridine Derivatives using Waste Orange Peel Derived C-SO3H Nano-Powder as an Efficient and Reusable Catalyst","authors":"Nagarajan Nagasundaram Nagarajan Nagasundaram, Sivagiri Sumitha Sivagiri Sumitha, Appaswami Lalitha Appaswami Lalitha","doi":"10.13074/jent.2019.12.194383","DOIUrl":"https://doi.org/10.13074/jent.2019.12.194383","url":null,"abstract":"A new series of structurally diverse azo fused dipyrazolopyridines has been synthesized via one pot pseudo six component reaction of various substituted aryl azo-salicylaldehydes with ethyl acetoacetate, hydrazine hydrate and ammonium acetate using waste orange peel derived carbon modified sulfonic acid (C-SO3H) as a mild, efficient and inexpensive heterogeneous catalyst. The prepared catalyst was characterized by FT-IR, XRD, SEM, EDX and XPS studies. The catalytically synthesized compounds were characterized by FT-IR, H NMR and C NMR. Use of recyclable powder catalyst (C-SO3H) for the excellent yields with rapid formation of the targeted azo fused dipyrazolopyridines with simple work-up procedure are the notable advantages of this protocol.","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79914108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.13074/jent.2019.03.191349
P. T. P. Thanapackiam, E.P.Subramaniam E.P.Subramaniam, K. V. H. K. V. Hemalatha, B. G. B. Gayathri
{"title":"Electrochemical Study of Inhibition of Corrosion of Copper by Ofloxacin in Acid Media","authors":"P. T. P. Thanapackiam, E.P.Subramaniam E.P.Subramaniam, K. V. H. K. V. Hemalatha, B. G. B. Gayathri","doi":"10.13074/jent.2019.03.191349","DOIUrl":"https://doi.org/10.13074/jent.2019.03.191349","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77845654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.13074/jent.2019.12.194384
S. S. S. Sumathi, J. S. J. Shakina
{"title":"Synthesis and Thermal Characterization Of Polyurethanes Obtained From Linseed and Oliveoil-Based Polyols","authors":"S. S. S. Sumathi, J. S. J. Shakina","doi":"10.13074/jent.2019.12.194384","DOIUrl":"https://doi.org/10.13074/jent.2019.12.194384","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88063812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.13074/jent.2019.09.193369
D. S. D. Selvakumari, Nazarene Simon Nazarene Simon, Valarishisha Khrshiing Valarishisha Khrshiing, V. M. V. Mahalakshmi
{"title":"Antibacterial Activity of Various ZnO Nanostructures on Pathogenic Bacteria Found in Selaiyur Lake, Tamil Nadu","authors":"D. S. D. Selvakumari, Nazarene Simon Nazarene Simon, Valarishisha Khrshiing Valarishisha Khrshiing, V. M. V. Mahalakshmi","doi":"10.13074/jent.2019.09.193369","DOIUrl":"https://doi.org/10.13074/jent.2019.09.193369","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"BME-18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72613004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.13074/jent.2019.12.194386
T. P. D. T. Praveen Dhar
{"title":"Oligodynamic Effects Copper Against Water Borne Pathogens","authors":"T. P. D. T. Praveen Dhar","doi":"10.13074/jent.2019.12.194386","DOIUrl":"https://doi.org/10.13074/jent.2019.12.194386","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86134550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-01-01DOI: 10.13074/jent.2019.03.191356
P. T. P. Thanapackiam, E. P. S. E. P. Subramaniam
{"title":"Corrosion Inhibition of Copper in Acid Media using Sparfloxacin - Electrochemical Study","authors":"P. T. P. Thanapackiam, E. P. S. E. P. Subramaniam","doi":"10.13074/jent.2019.03.191356","DOIUrl":"https://doi.org/10.13074/jent.2019.03.191356","url":null,"abstract":"","PeriodicalId":36296,"journal":{"name":"Journal of Water and Environmental Nanotechnology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84718109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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