01402nas a2200241   4500008004100000022001400041245012500055210006900180260007900249300001200328490000700340520046400347653001800811653002200829653002700851653002100878100002400899700002800923700002600951700002500977700002601002856013201028       2010                        eng d  a1001-841700aZnO-beta zeolite: as an effective and eco-friendly heterogeneous catalyst for the synthesis of benzothiazole derivatives0 aZnObeta zeolite as an effective and ecofriendly heterogeneous ca  a360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USAbELSEVIER SCIENCE INCcAPR  a421-4250 v213 a<p>A cheap and recyclable ZnO-beta zeolite was used as catalyst for the synthesis of benzothiazole derivatives. This method provides several advantages such as environmental friendliness, short reaction times, high yields, simple work-up procedure and catalyst was successfully reused for four cycles without significant loss of activity. (C) 2009 Machhindra K. Lande. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.</p>10aBenzothiazole10acyclocondensation10aheterogeneous catalyst10aZnO-beta zeolite1 aKatkar, Santosh, S.1 aMohite, Pravinkumar, H.1 aGadekar, Lakshman, S.1 aVidhate, Kaluram, N.1 aLande, Machhindra, K.  uhttps://library.ncl.res.in/content/zno-beta-zeolite-effective-and-eco-friendly-heterogeneous-catalyst-synthesis-benzothiazole-002482nas a2200409   4500008004100000022001400041245011900055210006900174260000800243300001400251490000800265520117500273653002001448653001801468653001501486653001001501653001801511653001901529653002201548653002401570653002001594653002101614653001901635653001801654653001901672653004601691653003001737653002201767653002501789653003601814653002601850100001601876700001701892700001801909700001401927856013101941       2017                        eng d  a0974-362600aSynthesis and characterization of six-membered pincer nickelacycles and application in alkylation of benzothiazole0 aSynthesis and characterization of sixmembered pincer nickelacycl  cAUG  a1161-11690 v1293 a<p>Six-membered pincer nickelacycle complexes have been synthesized and employed for the catalytic C–H bond alkylation of benzothiazole. The pincer nickelacycle, {κP, κC, κP- (2 - iPr 2POCH 2-C 6H 3- 6 -CH 2OP iPr 2)} NiBr , [(iPr4-POCCCOP)NiBr(2)] was synthesized by the reaction of 1,3 - iPr 2POCH 2-C 6H 4-CH 2OP iPr 2[(iPr4-POCCCOP)-H(1)] with (CH3CN)2NiBr2 in the presence of Et 3N via the C(2)–H activation on ligand 1. Treatment of [(iPr4-POCCCOP)NiBr](2) with AgOAc afforded the complex [(iPr 4-POCCCOP) Ni (OAc)] (3) in good yield. Both the complexes 2 and 3 were characterized by 1H , 13C and 31P -NMR spectral analysis. Further, the molecular structures of complexes 2 and 3 were established by X-ray crystallography. The complex 2 was found to be an active catalyst for the C–H bond alkylation of benzothiazole with alkyl halides containing β–hydrogen atoms. Graphical abstract: Synopsis. Six-membered pincer nickelacycles have been synthesized and structurally characterized, which show catalytic activity for the C–H bond alkylation of benzothiazole with alkyl halides containing β–hydrogen atoms.[Figure not available: see fulltext.].</p>10aActive catalyst10aAlkyl halides10aAlkylation10aAtoms10aBenzothiazole10aBenzothiazoles10aCatalyst activity10aChemical activation10aCrystallography10aC–H activation10aHydrogen atoms10aNickelacycles10aPincer complex10aPincer complexessix-membered nickelacycle10asix-membered nickelacycle10aSpectrum analysis10aSynthesis (chemical)10aSynthesis and characterizations10aX ray crystallography1 aPandiri, H.1 aSharma, D.M.1 aGonnade, R.G.1 aPunji, B.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-six-membered-pincer-nickelacycles-and-application-alkylation01956nas a2200289   4500008004100000022001400041245014100055210006900196260000800265300001200273490000900285520098800294653001301282653001801295653001101313653000801324653001701332100002201349700001901371700002501390700002001415700002001435700002001455700002601475700003401501856013101535       2019                        eng d  a0022-286000aSynthesis, characterization, pharmacological and computational studies of 4, 5, 6, 7-tetrahydro-1, 3-benzothiazole incorporated azo dyes0 aSynthesis characterization pharmacological and computational stu  cMAR  a630-6410 v11793 a<p>The present work describes the synthesis of five novel heterocyclic azo dyes (4a-4e) through conventional diazo-coupling reaction of 4, 5, 6, 7-tetrahydro-1, 3-benzothiazole with various coupling compounds at 0-5 degrees C. The chemical structures of the synthesized azo dyes were characterized by both theoretical and experimental techniques. All the synthesized molecules were evaluated for their antioxidant activity by two different techniques such as DPPH and FRAP. The results indicated that all the synthesized compounds proved to be potent antioxidants. The anti-mycobacterial activity of the azo dyes was tested against M. tuberculosis and the compounds 4a and 4e showed higher activity among the tested dyes. The DNA binding studies showed effective intercalation properties between the azo dyes and CT-DNA. Finally, the molecular docking studies indicated a possible interaction of the azo dyes with target receptor RpsA. (C) 2018 Elsevier B.V. All rights reserved.</p>10aAzo dyes10aBenzothiazole10aCT-DNA10aDFT10atuberculosis1 aMaliyappa, M., R.1 aKeshavayya, J.1 aMallikarjuna, N., M.1 aKrishna, Murali1 aShivakumara, N.1 aSandeep, Telkar1 aSailaja, Krishnamurty1 aNazrulla, Mohammed, Azeezulla  uhttps://library.ncl.res.in/content/synthesis-characterization-pharmacological-and-computational-studies-4-5-6-7-tetrahydro-1-3