http://nopr.niscair.res.in/handle/123456789/9704 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/9719 Title: Efficient synthesis of 1,3,4-oxadiazolyl-1,8-naphthyridines using iodobenzene diacetate in solid state <br/> <br/>Authors: Mogilaiah, K; Kumar, K Shiva; Swamy, J Kumara; Chandra, A Vinay <br/> <br/>Abstract: A simple and highly efficient procedure has been described for the synthesis of 1-(5-aryl-[1,3,4]-oxadiazol-2-ylmethyl)-3-(3-methylphenyl)-1<i>H</i>-[1,8]naphthyridin-2-ones <b style="">5 </b>by the oxidation of the corresponding [2-oxo-3-(3-methylphenyl)-2<i>H</i>-[1,8]naphthyri­din-1-yl]acetic acid arylidenehydrazides <b style="">4 </b>with iodobenzene diacetate [ PhI(OAc)₂] in solid state. The products are obtained in good yields and in a state of high purity. The structural assignments of compounds <b style="">2-5</b> are based on their elemental analyses and spectral (IR and ¹ H NMR) data. <br/> <br/>Page(s): 840-844 http://nopr.niscair.res.in/handle/123456789/9718 Title: Zinc chloride-catalyzed one-pot synthesis of 3-[2-(3-methyl-4,5-dihydro-furo[2,3-<i>c</i>]­pyrazol-1-yl)thiazol-4-yl]-chromen-2-ones <i style="">via </i>a three component reaction <br/> <br/>Authors: Kumar, P Vijaya; Reddy, K Manoher; Rao, V Rajeswar <br/> <br/>Abstract: A simple and convenient procedure for the synthesis of 3-[2-(3-methyl-4,5-dihydro-furo[2,3-<i style="">c</i>]pyrazol-1-yl)-thiazol-4-yl]-chro­­men-2-ones <b>4a-f</b> is described through anhydrous zinc chloride-catalyzed one pot condensation of 3-(2-bromoacetyl)­coumarin, thiosemicarbazide and 2-acetylbutyrolactone in good yields. The title compounds <b>4a-f</b> are also synthesized <i style="">via</i> an alternative procedure. <br/> <br/>Page(s): 836-839 http://nopr.niscair.res.in/handle/123456789/9717 Title: Synthesis, antimicrobial and insecticidal activity of some new cinnoline based chalcones and cinnoline based pyrazoline derivatives <br/> <br/>Authors: Gautam, Nidhi; Chourasia, O P <br/> <br/>Abstract: <smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"> 4-Methyl-3-acetyl cinnoline used as a precursor to synthesize some new cinnoline based chalcones <b style="">3a-l</b>. Reaction of chalcone with hydrazine hydrate in acetic acid yields the cinnoline based pyrazoline derivatives <b style="">4a-l</b>. The structures of synthesized compounds have been confirmed by elemental analysis, IR and NMR spectral studies and  evaluated for their antibacterial activity against <i style="">Bacillus subtilis, Escherichia coli, Staphylococcus aureaus</i> and <i style="">Klebsiella pneumoniae</i>, antifungal activity against <i style="">Aspergillus flavus, Fusarium oxysporum, Aspergillus niger</i> and <i style="">Trichoderma viridae</i> and insecticidal activity against <i style="">Periplaneta americana.</i> </smarttagtype></smarttagtype></smarttagtype> <br/> <br/>Page(s): 830-835 http://nopr.niscair.res.in/handle/123456789/9716 Title: An efficient mono-mode MW controlled multicomponent synthesis of polysubstituted benzenes under solvent-free conditions <br/> <br/>Authors: Singh, Krishna Nand; Singh, Satish Kumar <br/> <br/>Abstract: Microwave-assisted, solvent-free one-step multicomponent and efficient synthesis of polysubstituted benzene derivatives has been achieved in reasonably good yield from ethylchloroacetate, aromatic aldehydes and malononitrile in the presence of pyridine. <br/> <br/>Page(s): 826-829