NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/3192026-10-10T12:32:40Z2026-10-10T12:32:40ZAl₂O₃ catalyzed Friedlander synthesis of 1, 8-naphthyridines in the solid stateMogilaiah, KVidya, Khttp://nopr.niscpr.res.in/handle/123456789/7562008-04-07T04:30:25Z2007-10-01T00:00:00ZTitle: Al₂O₃ catalyzed Friedlander synthesis of 1, 8-naphthyridines in the solid state
Authors: Mogilaiah, K; Vidya, K
Abstract: Al₂O₃ catalyzes efficiently the Freidlander condensation of
2-aminonicotinaldehyde 1 with various carbonyl compounds containing ⍺-methylene group 2 in the solid state to afford the corresponding 1,8-naphthyridines 3. The reaction proceeds efficiently at room temperature in good yields and in a state of high purity.
Page(s): 1721-17232007-10-01T00:00:00ZClay-catalyzed high-speed synthesis of thiadiazepine in one-potSiddiqui, Ibadur RSingh, Pravin KSrivastava, VishalSingh, Jhttp://nopr.niscpr.res.in/handle/123456789/7542008-04-08T04:30:17Z2007-10-01T00:00:00ZTitle: Clay-catalyzed high-speed synthesis of thiadiazepine in one-pot
Authors: Siddiqui, Ibadur R; Singh, Pravin K; Srivastava, Vishal; Singh, J
Abstract: Microwave assisted clay-catalyzed solid state integrated chemical process which enables the consumption of toxic inter-mediates and their isolation from environment, reduce reaction time, cost and complex isolation procedures enhances yields are effective for realizing a green chemical process in library synthe-ses of bio-active compounds. This is described here in the synthe-sis of thiadiazepine. Antifungal screening results on Fusarium oxysporum and Penicillium citrinum show that most of the syn-thesized compounds display promising antifungal activity, compa-rable with griseofulvin and dithane M-45 as standards.
Page(s): 1716-17202007-10-01T00:00:00ZDehydroacetic acid and its derivatives in organic synthesis: Synthesis of some new 2-substituted-4- (5-bromo-4-hydroxy-6-methyl- 2H-pyran-2-one-3-yl)thiazolesPrakash, Richa PrakashKumar, AjaySingh, Shiv Phttp://nopr.niscpr.res.in/handle/123456789/7522008-06-06T05:44:12Z2007-10-01T00:00:00ZTitle: Dehydroacetic acid and its derivatives in organic synthesis: Synthesis of some new 2-substituted-4- (5-bromo-4-hydroxy-6-methyl- 2H-pyran-2-one-3-yl)thiazoles
Authors: Prakash, Richa Prakash; Kumar, Ajay; Singh, Shiv P
Abstract: Synthesis of 3 β,3β,5-tribromoacetyl-4-hydroxy-6- methyl-2H-pyran-2-one 2 from the bromination of DHA 1 in chloroform has been reported. The reaction of 2 with various thioureas/thioamides leads to an efficient synthesis of new 2-substituted-4-(5-bromo-4-hydroxy-6-methyl- 2H-pyran-2-one-3-yl)thiazoles.
Page(s): 1713-17152007-10-01T00:00:00ZSynthesis and studies of some novel s-triazine based aminopyrimidines, isoxazoles and 1,5-benzothiazepinesSolankee, AnjaniKapadia, KishorSolankee, PankitPrajapati, YogeshPatel, HiralSolankee, Sejalhttp://nopr.niscpr.res.in/handle/123456789/7512008-04-08T04:30:14Z2007-10-01T00:00:00ZTitle: Synthesis and studies of some novel s-triazine based aminopyrimidines, isoxazoles and 1,5-benzothiazepines
Authors: Solankee, Anjani; Kapadia, Kishor; Solankee, Pankit; Prajapati, Yogesh; Patel, Hiral; Solankee, Sejal
Abstract: An elegant synthesis of the titled compounds 7a-e, 8a-e and 9a-e have been presented starting from chalcones 6a-e based on
s-triazine nucleus. These chalcones 6a-e on cyclisation with guanidine nitrate and hydroxylamine hydrochloride in the presence of alkali give aminopyrimidines 7a-e and isoxazoles 8a-e respectively. Further these chalcones 6a-e on cyclisation with
2-aminothiophenol in the presence of few drops of glacial acetic acid give 1,5-benzothiazepines 9a-e. All the products obtained from these reactions are characterized by elemental analysis, IR, ¹H NMR and mass spectral data.
Page(s): 1707-17122007-10-01T00:00:00Z