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Molbank, Volume 2007, Issue 3 (July 2007)

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Open AccessShort Note One-pot Synthesis of 2-seleno-4-methylquinoline
Molbank 2007, 2007(3), M543; doi:10.3390/M543
Received: 17 December 2006 / Accepted: 3 January 2007 / Published: 2 June 2007
Cited by 1 | PDF Full-text (105 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Number of workers has reported the synthesis of condensed fused quinoline derivatives containing selenium atom and studied for their DNA binding, cytotoxic, anticancer and antitumour activities [1,2,3].[...] Full article
Open AccessShort Note Stereoselective Synthesis of a New cis Monocyclic β-lactam Bearing a Sugar Moiety at Its N1 Position and Its Physical Characterization
Molbank 2007, 2007(3), M544; doi:10.3390/M544
Received: 29 December 2006 / Accepted: 27 February 2007 / Published: 30 May 2007
PDF Full-text (213 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Synthesis of a new monocyclic β-lactam containing a sugar moiety at its N1 position via [2+2] cycloaddition reaction of ketene and imine is described. Reaction of achiral phenoxy ketene with chiral aldimine derived from chiral 2, 3, 4, 6-tetra-O-acetyl-β-D-galactopyranosylamine and 2-hydroxy-3-methoxy benzaldehyde resulted
[...] Read more.
Synthesis of a new monocyclic β-lactam containing a sugar moiety at its N1 position via [2+2] cycloaddition reaction of ketene and imine is described. Reaction of achiral phenoxy ketene with chiral aldimine derived from chiral 2, 3, 4, 6-tetra-O-acetyl-β-D-galactopyranosylamine and 2-hydroxy-3-methoxy benzaldehyde resulted in the formation of 2 as a single diastereomer. Then its physical characterization has been determined at the AM1 level of theory. Full article
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Figure 1

Open AccessShort Note 3-tert-butoxycarbonylamino-pyridine-2-carboxylic Acid Methyl Ester
Molbank 2007, 2007(3), M545; doi:10.3390/M545
Received: 23 January 2007 / Accepted: 24 February 2007 / Published: 30 May 2007
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Abstract
The discussion and purpose for the synthesis of the 2, 3-pyridinecarboxylicacid-2-methylester 1 has been reported elsewhere [1].[...] Full article
Open AccessShort Note 3-tert-butoxycarbonylamino-pyridine-2-carboxylic Acid
Molbank 2007, 2007(3), M546; doi:10.3390/M546
Received: 23 January 2006 / Accepted: 24 February 2006 / Published: 30 March 2007
PDF Full-text (101 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To the carbamic acid tert-butylester 1 (1.03 g, 4.08 mmol) in methanol (15 ml) was added 1.4 equivalents of NaOH (2N).[...] Full article
Open AccessShort Note Synthesis of 4-methoxy-2-thiomorpholin-4-ylmethyl-1-phenol
Molbank 2007, 2007(3), M547; doi:10.3390/M547
Received: 19 January 2007 / Accepted: 23 February 2007 / Published: 23 August 2007
Cited by 1 | PDF Full-text (125 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Infrared light activation as a non-conventional energy source has become an important method that can be used to carry out a wide range of reactions with short reaction times and high yields. Full article
Open AccessShort Note Synthesis of 4-bromo-2-thiomorpholin-4-ylmethyl-1-phenol
Molbank 2007, 2007(3), M548; doi:10.3390/M548
Received: 19 January 2007 / Accepted: 24 February 2007 / Published: 23 August 2007
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Abstract
4-bromo-2-thiomorpholin-4-ylmethyl-1-phenol (2) was prepared from 4-bromophenol (1) and thiomorpholine and formaldehyde (2 eq.) and 1 eq. of thiomorpholine.[...] Full article
Open AccessShort Note Synthesis of 4-isopropyl-bis-2,6-morpholin-4-ylmethyl-1-phenol
Molbank 2007, 2007(3), M549; doi:10.3390/M549
Received: 1 January 2007 / Revised: 24 February 2007 / Published: 30 May 2007
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Abstract
4-isopropyl-bis-2,6-morpholin-4-ylmethyl-1-phenol (2) was prepared from 4-isopropylphenol (1) and formaldehyde (2 eq.) and 2 eq. of morpholine.[...] Full article
Open AccessShort Note Synthesis of 1,2,5,7-dithiadiazonan-6-ylidenecyanamide. A New Potential Cysteamine Derivate Radioprotector Compound
Molbank 2007, 2007(3), M550; doi:10.3390/M550
Received: 19 January 2007 / Accepted: 24 February 2007 / Published: 30 May 2007
PDF Full-text (124 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Radioprotectors have been described as a chemical compounds that protect certain normal tissues as opposed to tumors.[...] Full article
Open AccessShort Note Synthesis of Mono- and Dibromo-Derivatives of 1-Phenylpyrazol-3-ol
Molbank 2007, 2007(3), M551; doi:10.3390/M551
Received: 30 January 2007 / Revised: 15 February 2007 / Published: 30 May 2007
Cited by 2 | PDF Full-text (159 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Dependent on the reaction conditions, 1-phenylpyrazol-3-ol and bromine give either 4-bromo-1-phenylpyrazol-3-ol (2a) or 4-bromo-1-(4-bromophenyl)pyrazol-3-ol (2b). Treatment of 2a or 2b with refluxing acetic anhydride leads to the corresponding O-acetyl derivatives 3a and 3b, respectively. Detailed spectroscopic data (1H NMR, 13C
[...] Read more.
Dependent on the reaction conditions, 1-phenylpyrazol-3-ol and bromine give either 4-bromo-1-phenylpyrazol-3-ol (2a) or 4-bromo-1-(4-bromophenyl)pyrazol-3-ol (2b). Treatment of 2a or 2b with refluxing acetic anhydride leads to the corresponding O-acetyl derivatives 3a and 3b, respectively. Detailed spectroscopic data (1H NMR, 13C NMR, 15N NMR, MS, IR) for 2b, 3a and 3b are presented. Full article
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Scheme 1

Open AccessShort Note 3-(2-Oxopropyl)-2(3H)-benzoxazolone
Molbank 2007, 2007(3), M552; doi:10.3390/M552
Received: 9 March 2007 / Accepted: 19 March 2007 / Published: 30 May 2007
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Abstract
The title compound is an important intermediate for the preparation of 3,4- and 3,4,5-substituted 1-(2-hydroxy-phenyl)imidazolin-2-ones [1,2] and 6-methyl-4-(2-hydroxyphenyl)-1,2,4-triazin-3-ones [3].[...] Full article
Open AccessShort Note Copper Dipyridine Dichloride: An Efficient and Convenient Catalyst for the Synthesis of Bis (Indolyl) Methanes
Molbank 2007, 2007(3), M553; doi:10.3390/M553
Received: 3 January 2007 / Accepted: 14 February 2007 / Published: 30 May 2007
PDF Full-text (386 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Copper dipyridine dichloride is used as an efficient catalyst for the electrophilic substitution reaction of indoles with aromatic aldehydes in acetonitrile to afford the corresponding bis (indolyl)methanes in excellent yields at room temperature. Full article
Figures

Scheme 1

Open AccessShort Note 2-[(2-Hydroxy-benzylidene)-amino]-5,6-dihydro-4H-cyclopenta [b] Thiophene-3-carboxylic Acid Methyl Ester
Molbank 2007, 2007(3), M554; doi:10.3390/M554
Received: 3 January 2006 / Accepted: 24 June 2006 / Published: 30 May 2007
PDF Full-text (117 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Schiff bases from 2-hydroxy-1-naphthaldehyde have often been used as chelating ligands in the field coordination chemistry [1].[...] Full article
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