The Experts below are selected from a list of 243 Experts worldwide ranked by ideXlab platform
Paramasivam Manisankar - One of the best experts on this subject based on the ideXlab platform.
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Solvent based selectivity in the synthesis of di(2-aryl-1H-3-indolyl) sulfides and 1-aryl-2-[(2-aryl-1H-3-indolyl)sulfanyl]-1-ethanones
RSC Advances, 2012Co-Authors: Selvam Chitra, Nidhin Paul, Shanmugam Muthusubramanian, Paramasivam ManisankarAbstract:The commendable product selectivity exhibited by the solvents during the reaction of 2-[(2-oxo-2-arylethyl)sulfanyl]-1-aryl-1-ethanones with Phenylhydrazine Hydrochloride yielding exclusively 1-aryl-2-[(2-aryl-1H-3-indolyl)sulfanyl]-1-ethanones in THF and di(2-aryl-1H-3-indolyl) sulfides in ethanol is described.
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A facile, water mediated, microwave-assisted synthesis of 4,6-diaryl-2,3,3a,4-tetrahydro-1H-pyrido[3,2,1-jk]carbazoles by a domino Fischer indole reaction–intramolecular cyclization sequence
Green Chemistry, 2011Co-Authors: Selvam Chitra, Nidhin Paul, Shanmugam Muthusubramanian, Paramasivam ManisankarAbstract:An environmentally benign, facile and efficient synthesis of a series of 4,6-diaryl-2,3,3a,4-tetrahydro-1H-pyrido[3,2,1-jk]carbazoles was achieved in water with good yield by the reaction of diastereomerically pure 2-(3-oxo-1,3-diarylpropyl)-1-cyclohexanones with Phenylhydrazine Hydrochloride under microwave irradiation. The transformation presumably proceeds via a domino Fischer indole reaction–intramolecular cyclisation sequence.
Laila A. El-hussain - One of the best experts on this subject based on the ideXlab platform.
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2,3-Dichloro-5,6-dicyano-1,4-benzoquinone as a redox titrant
Archives of Pharmacal Research, 1997Co-Authors: A. M. El-brash, Laila A. El-hussainAbstract:An oxidimetric titrant, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone in anhydrous acetic acid is used for the semimicro-determination of hydrazine hydrate, Phenylhydrazine Hydrochloride, isoniazid and iproniazid phosphate in pure forms as well as in some pharmaceutical preparations containing isoniazid and iproniazid phosphate. The end point was detected potentiometrically using a platinum-calomel combination electrode. The results obtained are compared statistically with those obtained by the official methods and they are in good agreement.
Igor V Trushkov - One of the best experts on this subject based on the ideXlab platform.
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unusual reactivity of β 3 indolyl α β unsaturated ketones 2 acetylvinyl group removal by Phenylhydrazine Hydrochloride
Tetrahedron Letters, 2011Co-Authors: Alexander V Butin, Maxim G Uchuskin, Arkady S Pilipenko, Olga V Serdyuk, Igor V TrushkovAbstract:The unusual removal of a 2-acetylvinyl group from the C3 position of an indole core during reaction with Phenylhydrazine Hydrochloride affording 3-unsubstituted 2-(hetero)arylindoles is described.
Mariusz Mojzych - One of the best experts on this subject based on the ideXlab platform.
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Synthesis of Phenylhydrazone of 5-Acetyl-3-(Methylsulfanyl)-1,2,4-Triazine and 3-Methyl-5-(Methylsulfanyl)-1-Phenyl-1H-Pyrazolo[4,3-e][1,2,4]Triazine from Pivotal Intermediate
Molbank, 2005Co-Authors: Mariusz MojzychAbstract:As part of ongoing research programme on bicyclic heterocycles [1,2,3,4] we have elaborated a new approach to 1H-pyrazolo[4,3-e][1,2,4]triazine derivative 3 and its synthetic precursor 2 by reaction of oxime 5-acetyl-3-(methylsulfanyl)-1,2,4-triazine (1) with Phenylhydrazine Hydrochloride under different reaction conditions.[...]
Selvam Chitra - One of the best experts on this subject based on the ideXlab platform.
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Solvent based selectivity in the synthesis of di(2-aryl-1H-3-indolyl) sulfides and 1-aryl-2-[(2-aryl-1H-3-indolyl)sulfanyl]-1-ethanones
RSC Advances, 2012Co-Authors: Selvam Chitra, Nidhin Paul, Shanmugam Muthusubramanian, Paramasivam ManisankarAbstract:The commendable product selectivity exhibited by the solvents during the reaction of 2-[(2-oxo-2-arylethyl)sulfanyl]-1-aryl-1-ethanones with Phenylhydrazine Hydrochloride yielding exclusively 1-aryl-2-[(2-aryl-1H-3-indolyl)sulfanyl]-1-ethanones in THF and di(2-aryl-1H-3-indolyl) sulfides in ethanol is described.
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A facile, water mediated, microwave-assisted synthesis of 4,6-diaryl-2,3,3a,4-tetrahydro-1H-pyrido[3,2,1-jk]carbazoles by a domino Fischer indole reaction–intramolecular cyclization sequence
Green Chemistry, 2011Co-Authors: Selvam Chitra, Nidhin Paul, Shanmugam Muthusubramanian, Paramasivam ManisankarAbstract:An environmentally benign, facile and efficient synthesis of a series of 4,6-diaryl-2,3,3a,4-tetrahydro-1H-pyrido[3,2,1-jk]carbazoles was achieved in water with good yield by the reaction of diastereomerically pure 2-(3-oxo-1,3-diarylpropyl)-1-cyclohexanones with Phenylhydrazine Hydrochloride under microwave irradiation. The transformation presumably proceeds via a domino Fischer indole reaction–intramolecular cyclisation sequence.