7126-65-0Relevant academic research and scientific papers
Synthesis and antimicrobial activity of newer indole semicarbazones
Laxmi, S. Vijaya,Rajitha
experimental part, p. 85 - 90 (2012/05/20)
A series of 1-(2-Oxo-2-phenyl-ethyl)-2-phenyl- 1H-indole-3yl)methylene) semicarbazone derivatives (4a-g and 6a-c) were synthesized by the condensation of derivatives of 1-(2-Oxo-2-phenyl-ethyl)-2-phenyl-1Hindole- 3-carbaldehyde and semicarbazide in ethanol under microwave irradiation procedure. Both conventional and microwave-irradiated syntheses have been carried out to compare their yields and reaction time. The structures of the synthesized compounds were confirmed by spectral data. The antimicrobial activities of the synthesized compounds were screened using broth dilution method. Among all the screened compounds some of the compounds exerted good antifungal activity against C. albicans and C. rugosa. All the compounds exhibited moderate activity against bacteria such as B. subtilis, S. aureus, S. epidermidis, E. coli, P. aeoginosa, and K. pneumoniae. Springer Science+Business Media, LLC 2010.
Synthesis, single crystal X-ray studies and antimicrobial activities of novel Indole barbiturates
Laxmi, S. Vijaya,Janardhan,Rajitha,Raghavaiah,Srinivas, Prathima
, p. 2896 - 2901 (2012/10/30)
A novel series of N-substituted 2-phenyl indole derivatives incorporating barbituric acid have been synthesised and the chemical structures of the resulting molecules were characterised by means of IR, NMR and mass spectra. The antimicrobial activities of these compounds were investigated. Significant improvement in the antimicrobial activity can be achieved, in the presence of Cl and Br substituents on phenacyl moiety at para position. Single crystal X-ray analysis was also performed for the compound 6b in order to determine the crystal structure. Springer Science+Business Media, LLC 2011.
3-(substituted phenyl)phthalides
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, (2008/06/13)
Process comprises the combination of the three steps of condensing 3-N(R)2 -4-X-benzoic acid with an aromatic or heterocyclic aldehyde, Y-CHO, under acidic conditions to produce 3-Y-5-X-6-N(R)2 phthalide (II), condensing said phthalide with a compound of the formula Z-H under alkaline or acid conditions to produce 2-(α-Y-α-Z)methyl-4-X-5-N(R)2 benzoic acid (III), and oxidizing said benzoic acid to produce 3-Y-3-Z-5-X-6-N(R)2 phthalide (I) where: R is hydrogen, non-tertiary alkyl of one to four carbon atoms, benzyl or substituted benzyl; X is hydrogen or halo; Y is 4-R1 -3-R2 -2-R1 -phenyl, 1-R5 -2-R6 -5/6-R4 -3-indolyl, 9-R7 -3-carbazolyl, 9-julolidinyl, 3,4-dioxymethylenephenyl, 2-thienyl, 1-R8 -2-pyrrolyl, or 4-pyridinyl; and Z is 4-R1 -3-R2 -2-R1 -phenyl, 1-R5 -2-R6 -5/6-R4 -3-indolyl or 1-R8 -2-pyrrolyl which are useful as colorless precursor color formers in carbonless duplicating and in thermal marking systems. The intermediates, 3-Y-5-X-6-N(R)2 phthalides (II) and 2-(α-Y-α-Z)methyl-4-X-5-N(R)2 benzoic acids (III) also have utility as colorless precursor color formers in carbonless duplicating and thermal marking systems.
Novel compounds, processes and marking systems
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, (2008/06/13)
Mono and bis substituted (arylsulfonyl)alkanes useful as color formers, particularly in carbonless duplicating and thermal marking systems, are prepared by the interaction of the appropriate aldehyde or dialdehyde with the appropriate aryl or heterocyclic moiety and the appropriate phenylsulfinic acid in the presence of a catalyst.
