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Molbank, Volume 2013, Issue 1 (March 2013)

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Open AccessShort Note N-(4-(6-(4-nitrophenyl)-4-phenyl-1,3-diazabicyclo[3.1.0]hex-3-ene-2-yl)phenyl)acetamide
Molbank 2013, 2013(1), M791; doi:10.3390/M791
Received: 29 October 2012 / Accepted: 25 December 2012 / Published: 28 December 2012
Cited by 1 | PDF Full-text (251 KB) | Supplementary Files
Abstract
As a result of three-component one-pot reaction of trans-2-benzoyl-3-(4-nitrophenyl)aziridine with 4-acetamidobenzaldehyde and ammonium acetate, N-(4-(6-(4-nitrophenyl)-4-phenyl-1,3-diazabicyclo[3.1.0]hex-3-ene-2-yl)phenyl)acetamide was obtained in good yield. The newly synthesized compound exhibit interesting photochromic behavior in the solid and solution state. The structure of the synthesized compound [...] Read more.
As a result of three-component one-pot reaction of trans-2-benzoyl-3-(4-nitrophenyl)aziridine with 4-acetamidobenzaldehyde and ammonium acetate, N-(4-(6-(4-nitrophenyl)-4-phenyl-1,3-diazabicyclo[3.1.0]hex-3-ene-2-yl)phenyl)acetamide was obtained in good yield. The newly synthesized compound exhibit interesting photochromic behavior in the solid and solution state. The structure of the synthesized compound was confirmed by elemental analysis, 1H-NMR, 13C-NMR and UV-Visible spectral data. Full article
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Open AccessShort Note 2-[(1-Benzamido-2-methoxy-2-oxoethyl)amino]benzoic Acid
Molbank 2013, 2013(1), M792; doi:10.3390/M792
Received: 10 October 2012 / Accepted: 6 January 2013 / Published: 11 January 2013
PDF Full-text (91 KB) | Supplementary Files
Abstract The carboxylic α,α-diaminoester 2-[(1-benzamido-2-methoxy-2-oxoethyl) amino]benzoic acid is obtained by N-alkylation of methyl α-azido glycinate N-benzoylated with 2-aminobenzoic acid. Full article
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Open AccessShort Note Benzyl 3-deoxy-3-(3,4,5-trimethoxybenzylamino)-β-L-xylopyranoside
Molbank 2013, 2013(1), M793; doi:10.3390/M793
Received: 23 January 2013 / Accepted: 1 February 2013 / Published: 6 February 2013
PDF Full-text (71 KB) | Supplementary Files
Abstract
Reaction of 3,4,5-trimethoxybenzylamine and benzyl 2,3-anhydro-β-L-ribopyranoside in refluxing ethanol produced benzyl 3-deoxy-3-(3,4,5-trimethoxybenzylamino)-β-L-xylopyranoside in 72.5% yield. An attempt to synthesize the title compound by reacting neat 3,4,5-trimethoxybenzylamine with benzyl 2,3-anhydro-β-L-ribopyranoside without a solvent produced a dark brown mixture with several decomposition products. The [...] Read more.
Reaction of 3,4,5-trimethoxybenzylamine and benzyl 2,3-anhydro-β-L-ribopyranoside in refluxing ethanol produced benzyl 3-deoxy-3-(3,4,5-trimethoxybenzylamino)-β-L-xylopyranoside in 72.5% yield. An attempt to synthesize the title compound by reacting neat 3,4,5-trimethoxybenzylamine with benzyl 2,3-anhydro-β-L-ribopyranoside without a solvent produced a dark brown mixture with several decomposition products. The structure of benzyl 3-deoxy-3-(3,4,5-trimethoxybenzylamino)-β-L-xylopyranoside was determined using elemental analysis, 1H-NMR and 13C-NMR and its conformation is 1C4. Full article
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Open AccessShort Note 2-(4-Methylpiperazin-1-yl)-4-phenyl-6-(thiophen-2-yl)-pyridine-3-carbonitrile
Molbank 2013, 2013(1), M794; doi:10.3390/M794
Received: 19 December 2012 / Accepted: 18 February 2013 / Published: 27 February 2013
PDF Full-text (374 KB) | Supplementary Files
Abstract 2-(4-Methylpiperazin-1-yl)-4-phenyl-6-(thiophen-2-yl)-pyridine-3-carbonitrile (4) was synthesized via nucleophilic substitution reaction of 1-methylpiperazine with 2-bromo analogue 3. The latter was obtained through bromination (Br2/AcOH) of 2-[3-oxo-1-phenyl-3-(thiophen-2-yl)propyl]malononitrile (2). Full article
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Open AccessShort Note 6,6'-(1E,1'E)-((1R,2R)-1,2-Diphenylethane-1,2-diyl)bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(2-tert-butyl-4-((trimethylsilyl)ethynyl)phenol)
Molbank 2013, 2013(1), M795; doi:10.3390/M795
Received: 4 January 2013 / Accepted: 28 February 2013 / Published: 1 March 2013
PDF Full-text (129 KB) | Supplementary Files
Abstract Functionalizable salen derivative, 6,6'-(1E,1'E)-((1R,2R)-1,2-diphenylethane-1,2-diyl)bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(2-tert-butyl-4-((trimethylsilyl) ethyn-yl)phenol) (3), was synthesized by condensation between (1R,2R)-1,2-diphenylethane-1,2-diamine (2) and 3-tert-butyl-2-hydroxy-5-((trimethylsilyl)ethynyl) benzaldehyde (1) under refluxing conditions. The title compound was characterized by 1H-NMR, 13C-NMR, FT-IR, high-resolution mass spectrometry, optical rotation and melting point determination. Full article
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Open AccessShort Note 4'-Bromophenyl Triptycene-2,5-diol
Molbank 2013, 2013(1), M796; doi:10.3390/M796
Received: 8 January 2013 / Accepted: 28 February 2013 / Published: 6 March 2013
PDF Full-text (122 KB) | Supplementary Files
Abstract
Diels Alder reaction of 4-bromophenylquinone (Br-PQ) with anthracene, followed by reduction affords the desired 4'-bromophenyl triptycene-2,5-diol (T-Br-PH). The described synthesis represents a simple and efficient method for the construction of a triptycene ring with a bromophenyl pendant. The intermediate and the final [...] Read more.
Diels Alder reaction of 4-bromophenylquinone (Br-PQ) with anthracene, followed by reduction affords the desired 4'-bromophenyl triptycene-2,5-diol (T-Br-PH). The described synthesis represents a simple and efficient method for the construction of a triptycene ring with a bromophenyl pendant. The intermediate and the final compound (T-Br-PH) have been characterized by elemental analysis, NMR, and LCMS techniques. Full article
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