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Open AccessShort Note 4-{[(4-Fluorophenyl)imino]methyl}-3-hydroxyphenyl 4-(Hexadecanoyloxy)benzoate

by Sie-Tiong Ha, Guan-Yeow Yeap and Peng-Lim Boey

Molbank 2011, 2011(2), M723; doi:10.3390/M723

Received: 12 January 2011 / Accepted: 18 March 2011 / Published: 1 April 2011

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Abstract A new Schiff base ester, 4-{[(4-fluorophenyl)imino]methyl}-3-hydroxyphenyl 4-(hexadecanoyloxy)benzoate was synthesized and its IR, ¹H NMR, ¹³C NMR and EI-MS spectroscopic data are presented. Full article

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Open AccessShort Note 4-(3,5-Dibromo-4-hydroxyphenyl)-3-butoxycarbonyl-5-ethoxycarbonyl-2-methyl-6-phenyl-1,4-dihydropyridine

by Zhen Wang and Qingjian Liu

Molbank 2011, 2011(2), M724; doi:10.3390/M724

Received: 2 April 2011 / Accepted: 15 April 2011 / Published: 26 April 2011

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Abstract One-pot two-step Hantzsch synthesis of 4-(3,5-dibromo-4-hydroxyphenyl)-3- butoxycarbonyl-5-ethoxycarbonyl-2-methyl-6-phenyl-1,4-dihydropyridine under solvent- and catalyst-free conditions promoted with microwave irradiation is presented. Full article

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Open AccessShort Note 4-[(Anthracen-9-ylmethylene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one

by Abdullah M. Asiri and Salman A. Khan

Molbank 2011, 2011(2), M725; doi:10.3390/M725

Received: 24 March 2011 / Accepted: 6 May 2011 / Published: 9 May 2011

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Abstract The title compound, 4-[(anthracen-9-ylmethylene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one (3), was synthesized in high yield by reaction of anthracene-9-carbaldehyde and 4-aminoantipyrine in ethanol. The structure of this new compound was confirmed by elemental analysis, IR,¹H NMR, ¹³C NMR and GC-MS spectral data. Full article

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Open AccessShort Note 2-(Benzoylamino)-3-(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)acrylic acid

by Darpan Kaushik, Tarawanti Verma and Kapish Madaan

Molbank 2011, 2011(2), M726; doi:10.3390/M726

Received: 11 March 2011 / Accepted: 9 May 2011 / Published: 11 May 2011

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Abstract A novel acrylic acid derivative was synthesized via acid hydrolysis of 4-((5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)methylene)-2-phenyloxazol-5(4H)-one in gl. acetic acid. The structure of the title compound was established on the basis of IR, ¹H NMR, ¹³C-NMR and mass spectral data. Full article

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Open AccessShort Note (2E)-3-(4-Dimethylaminophenyl)-1-(2,5-dimethylfuran-3-yl)-prop-2-en-1-one

by Abdullah M. Asiri and Salman A. Khan

Molbank 2011, 2011(2), M727; doi:10.3390/M727

Received: 16 March 2011 / Accepted: 11 May 2011 / Published: 16 May 2011

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Abstract The title compound, (2E)-3-(4-dimethylaminophenyl)-1-(2,5-dimethylfuran-3-yl)-prop-2-en-1-one (3) was synthesized in high yield by reaction of 3-acetyl-2,5-dimethylfuran and 4-dimethylaminobenzaldehyde in the presence of 30% NaOH solution. The compound was fully characterized from its IR, ¹H NMR, ¹³C NMR, GC-MS data and elemental analysis. Full article

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Open AccessShort Note 8-[2-Chloro-5-(trifluoromethyl)phenyl]-4H-[1,2,4]oxadiazolo-[3,4-c][1,4]benzoxazin-1-one

by Andrey A. Berezin and Panayiotis A. Koutentis

Molbank 2011, 2011(2), M728; doi:10.3390/M728

Received: 10 May 2011 / Accepted: 24 May 2011 / Published: 30 May 2011

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Abstract 8-Bromo-4H-[1,2,4]oxadiazolo[3,4-c][1,4]benzoxazin-1-one 1 (NS2028) reacts with [2-chloro-5-(trifluoromethyl)phenyl]boronic acid 2 (2 equiv), Pd(OAc)₂ (10 mol%) and KOAc (4 equiv) in acetonitrile heated to ca. 110 °C (sealed tube) for 12 hours to give 8-[2-chloro-5-(trifluoromethyl)phenyl]-4H-[1,2,4]oxadiazolo[3,4-c][1,4]benzoxazin-1-one 4 in 64% yield. Full article

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Open AccessShort Note 1,3-Bis(pyren-1-yl)imidazolium chloride (IPyr·HCl)

by Peter Schroll and Burkhard König

Molbank 2011, 2011(2), M729; doi:10.3390/M729

Received: 14 April 2011 / Accepted: 10 June 2011 / Published: 17 June 2011

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Abstract A novel UV-A-light absorbing N-heterocyclic carbene precursor imidazolium salt 2 was synthesized by reaction of 1,4-bis(pyren-1-yl)-1,4-diazadiene 1 with paraformaldehyde in the presence of chlorotrimethylsilane. The title compound was characterized by 1H-NMR, 13C-NMR, 2D-NMR, mass spectrometry, IR and UV/VIS spectroscopy. Full article

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Molbank, Volume 2011, Issue 2 (June 2011)

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