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Molbank, Volume 2007, Issue 3 (July 2007) – 12 articles

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122 KiB  
Short Note
Synthesis of 4-bromo-2-thiomorpholin-4-ylmethyl-1-phenol
by Ana María Velázquez, Luis Alberto Torres, Raúl González, Alvaro Valencia, Sandra Díaz-Barriga, Italo Menconi, Luisa Martínez, Alberto Ramírez, Ignacio Martínez, Brígida Camacho, Rafael López-Castañares and Enrique Angeles
Molbank 2007, 2007(3), M548; https://doi.org/10.3390/M548 - 23 Aug 2007
Viewed by 4502
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
125 KiB  
Short Note
Synthesis of 4-methoxy-2-thiomorpholin-4-ylmethyl-1-phenol
by Ana María Velázquez, Luis Alberto Torres, Raúl González, Alvaro Valencia, Sandra Díaz-Barriga, Italo Menconi, Luisa Martínez, Alberto Ramírez, Ignacio Martínez, Brígida Camacho, Rafael López-Castañares and Enrique Angeles
Molbank 2007, 2007(3), M547; https://doi.org/10.3390/M547 - 23 Aug 2007
Cited by 2 | Viewed by 4368
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
105 KiB  
Short Note
One-pot Synthesis of 2-seleno-4-methylquinoline
by Tangali R. Ravikumar Naik, Halehatty S. Bhojya Naik, S. Ramesh, M. Raghavendra and G. Krishnamurthy
Molbank 2007, 2007(3), M543; https://doi.org/10.3390/M543 - 2 Jun 2007
Cited by 2 | Viewed by 2987
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
117 KiB  
Short Note
2-[(2-Hydroxy-benzylidene)-amino]-5,6-dihydro-4H-cyclopenta [b] Thiophene-3-carboxylic Acid Methyl Ester
by Abdullah Mohamed Asiri
Molbank 2007, 2007(3), M554; https://doi.org/10.3390/M554 - 30 May 2007
Viewed by 3756
Abstract
Schiff bases from 2-hydroxy-1-naphthaldehyde have often been used as chelating ligands in the field coordination chemistry [1].[...] Full article
386 KiB  
Short Note
Copper Dipyridine Dichloride: An Efficient and Convenient Catalyst for the Synthesis of Bis (Indolyl) Methanes
by Bavanthula Rajitha, Pola Someshwar, Vanam Naveen Kumar and Janganati Venu Madhav
Molbank 2007, 2007(3), M553; https://doi.org/10.3390/M553 - 30 May 2007
Cited by 1 | Viewed by 3586
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
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Scheme 1

118 KiB  
Short Note
3-(2-Oxopropyl)-2(3H)-benzoxazolone
by Ognyan I. Petrov, Yordanka B. Ivanova, Mariana S. Gerova and Katya V. Petrova
Molbank 2007, 2007(3), M552; https://doi.org/10.3390/M552 - 30 May 2007
Cited by 1 | Viewed by 3428
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
159 KiB  
Short Note
Synthesis of Mono- and Dibromo-Derivatives of 1-Phenylpyrazol-3-ol
by Eglė Nedzelskytė, Vytas Martynaitis, Algirdas Šačkus, Gernot A. Eller and Wolfgang Holzer
Molbank 2007, 2007(3), M551; https://doi.org/10.3390/M551 - 30 May 2007
Cited by 4 | Viewed by 3646
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

124 KiB  
Short Note
Synthesis of 1,2,5,7-dithiadiazonan-6-ylidenecyanamide. A New Potential Cysteamine Derivate Radioprotector Compound
by Enrique Angeles, Italo Menconi, Alberto Ramírez, Ana María Velázquez, Brígida Camacho, Gerardo Ordónez, Ignacio Martínez, Sandra Díaz-Barriga and Rafael López-Castañares
Molbank 2007, 2007(3), M550; https://doi.org/10.3390/M550 - 30 May 2007
Viewed by 4004
Abstract
Radioprotectors have been described as a chemical compounds that protect certain normal tissues as opposed to tumors.[...] Full article
135 KiB  
Short Note
Synthesis of 4-isopropyl-bis-2,6-morpholin-4-ylmethyl-1-phenol
by A. Ma. Velázquez, L. Torres, R. González, A. Valencia, L Menconi, L. Martínez, A. Ramírez, B. Camacho, S. Díaz-Barriga, R. López-Castañares and E. Angeles
Molbank 2007, 2007(3), M549; https://doi.org/10.3390/M549 - 30 May 2007
Viewed by 3774
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
106 KiB  
Short Note
3-tert-butoxycarbonylamino-pyridine-2-carboxylic Acid Methyl Ester
by Rachid Mamouni, Mohammadine El Haddad and Mohamed Akssira
Molbank 2007, 2007(3), M545; https://doi.org/10.3390/M545 - 30 May 2007
Viewed by 3712
Abstract
The discussion and purpose for the synthesis of the 2, 3-pyridinecarboxylicacid-2-methylester 1 has been reported elsewhere [1].[...] Full article
213 KiB  
Short Note
Stereoselective Synthesis of a New cis Monocyclic β-lactam Bearing a Sugar Moiety at Its N1 Position and Its Physical Characterization
by Aliasghar Jarrahpour, Abraham F. Jalbout and Parvaneh Alvand
Molbank 2007, 2007(3), M544; https://doi.org/10.3390/M544 - 30 May 2007
Cited by 1 | Viewed by 4005
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

101 KiB  
Short Note
3-tert-butoxycarbonylamino-pyridine-2-carboxylic Acid
by Rachid Mamouni, Mohammadine El Haddad and Mohamed Akssira
Molbank 2007, 2007(3), M546; https://doi.org/10.3390/M546 - 30 Mar 2007
Viewed by 3476
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
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