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Table of Contents

Molecules, Volume 6, Issue 6 (June 2001), Pages 496-573, M211-M231

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	M211 B. Abouhamza, S. Allaoud and A. Karim Short Note: 2,4-Dimethyl-3-phenyl-[2'-methyl-3'-chloro]-7-chloro-8-methyl-1,3-diaza-2,4-diboranaphtalene Tricarbonylchromium Complexes Molecules 2001, 6(6), M211; doi:10.3390/M211 Received: 15 December 2000 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (157 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M212 Abdullah Mohamed Asiri Short Note: 3-Cyano-2-(2,5-dimethoxybenzalamino)-4-5-tetramethylenethiophene Molecules 2001, 6(6), M212; doi:10.3390/M212 Received: 18 December 2000 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (91 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M213 Abdullah Mohamed Asiri Short Note: 3-(2-Nitrophenyl)-2-(4-nitrophenyl)-4-thiazolidinone Molecules 2001, 6(6), M213; doi:10.3390/M213 Received: 18 December 2000 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (91 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M214 Abdullah Mohamed Asiri Short Note: 2-Mercapto-5-(2'-isopropyl-5'-methylphenoxymethyl)-1,3,4-triazole Molecules 2001, 6(6), M214; doi:10.3390/M214 Received: 18 December 2000 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (107 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M215 Edmont V. Stoyanov and Ivo C. Ivanov Short Note: (R,S)-N-[(2-Oxocyclohexyl)methyl]-1-butanaminium Chloride Molecules 2001, 6(6), M215; doi:10.3390/M215 Received: 20 January 2000 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (113 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M216 Edmont V. Stoyanov and Ivo C. Ivanov Short Note: (R,S)-N-[(2-Oxocyclohexyl)methyl]-2-phenyl-1-ethanaminium Chloride Molecules 2001, 6(6), M216; doi:10.3390/M216 Received: 20 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (115 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M217 Edmont V. Stoyanov and Ivo C. Ivanov Short Note: (+)-(1R)-N1-{[(1R,1S)-2-Oxocyclohexyl]methyl}-1-phenyl-1-ethanaminium Chloride Molecules 2001, 6(6), M217; doi:10.3390/M217 Received: 20 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (119 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M218 Boyan I. Iliev and Ivo C. Ivanov Short Note: 4-Morpholino-2-oxo-2H-chromene-3-carbaldehyde Molecules 2001, 6(6), M218; doi:10.3390/M218 Received: 23 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (121 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M219 Györgyi Kovács, Zoltán Kele, Péter Forgó and Lajos Kovács Short Note: 2-Bromo-3-ethylthiazolium Tetrafluoroborate (BET) Molecules 2001, 6(6), M219; doi:10.3390/M219 Received: 20 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (105 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M220 David C. Forbes, Charles O. Gaston, Derrick L. Lewis, Doug W. Morrison and Mary C. Smith Short Note: 1-Diazo-2-(2-quinolinyl)-2-ethanone Molecules 2001, 6(6), M220; doi:10.3390/M220 Received: 20 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (114 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M221 M. Daoubi, A. Benharref and M. Pierrot Short Note: (1S,4R,5R,8R,9S,12R,13S) 12-(1S-Hydroxyethyl)-13-(3-hydroxypropyl)-5-(1,5-dimethylhexyl)-1,9-epoxy-4,8,13 Trimethyl Tricyclo [7,4,0,04,8] Tridecane Molecules 2001, 6(6), M221; doi:10.3390/M221 Received: 19 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (123 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M222 M. Daoubi, A. Benharref and Diego. M. Cortes Short Note: (1S,4R,5R,8R,9S,12R,13S),12-(1S-Hydroxyethyl)-13-(N-benzyl-2-carboxamido Ethyl)-5-(1,5-dimethylhexyl)-1,9-epoxy-4,8,13-trimethyl Tricyclo [7,4,0,0,4,8] Tridecane Molecules 2001, 6(6), M222; doi:10.3390/M222 Received: 19 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (136 KB) Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M223 M. Daoubi and A. Benharref Short Note: 2-Formyl nor-31-lanosten-3-enol Molecules 2001, 6(6), M223; doi:10.3390/M223 Received: 19 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (122 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M224 Christoph Michel, Davood Habibi and Michael Schmittel Short Note: 3-Trimethylsilanylethynyl-[1,10]phenanthroline Molecules 2001, 6(6), M224; doi:10.3390/M224 Received: 21 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (118 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M225 Christoph Michel, Davood Habibi and Michael Schmittel Short Note: 3-Ethynyl-[1,10]phenanthroline Molecules 2001, 6(6), M225; doi:10.3390/M225 Received: 21 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (111 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M226 Christoph Michel, Davood Habibi and Michael Schmittel Short Note: 3-(4-Iodo-phenylethynyl)-[1,10]phenanthroline Molecules 2001, 6(6), M226; doi:10.3390/M226 Received: 21 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (121 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M227 M. Dakir, E. Lassaba and A. Benharref Short Note: (1S,6S)-Tetrazolo [1,5-g]-7-Aza-trans-himachal-2-ene Molecules 2001, 6(6), M227; doi:10.3390/M227 Received: 18 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (128 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M228 M. Dakir, E. Lassaba, A. Chekroun and A. Benharref Short Note: (1S,2S,3R,6R,7R)-Epoxy-himachal-7-ol Molecules 2001, 6(6), M228; doi:10.3390/M228 Received: 12 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (127 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M229 F. Matloubi Moghaddam and O. Khakshoor Short Note: 4-Phenyl-2,2'-bis(phenylsulfonyl)butane Molecules 2001, 6(6), M229; doi:10.3390/M229 Received: 16 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (185 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M230 Hai-Yang Liu, Chi-Fong Luo, Kuo-Shen Chuang and Wen-Jwu Wang Short Note: 2, 9-Diphenylamino-1,10-phenanthroline Molecules 2001, 6(6), M230; doi:10.3390/M230 Received: 5 February 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract | Download PDF Full-text (117 KB) |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	M231 Noureddine Hammou Ahabchane, Joseph Téné Ghomsi and El Mokhtar Essassi Short Note: (3(5) Phenylpyrazol-5(3)-yl)-2-benzoylmethyl Benzimidazole Molecules 2001, 6(6), M231; doi:10.3390/M231 Received: 12 January 2001 / Accepted: 15 May 2001 / Published: 25 May 2001 Show/Hide Abstract |  Abstract: n/a (This article belongs to the Section Molbank Section of Molecules, 1997-2001)
	p. 496-509 Francisco Torrens Article: Molecular Polarizability of Sc and C (Fullerene and Graphite) Clusters Molecules 2001, 6(6), 496-509; doi:10.3390/60600496 Received: 8 March 2001; in revised form: 3 April 2001 / Accepted: 26 April 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (65 KB) Abstract: A method (POLAR) for the calculation of the molecular polarizability is presented. It uses the interacting induced dipoles polarization model. As an example, the method is applied to Scn and Cn (fullerene and one-shell graphite) model clusters. On varying the number of atoms, the clusters show numbers indicative of particularly polarizable structures. The are compared with reference calculations (PAPID). In general, the Scn calculated (POLAR) and Cn computed (POLAR and PAPID) are less polarizable than what is inferred from the bulk. However, the Scn calculated (PAPID) are more polarizable than what is inferred. Moreover, previous theoretical work yielded the same trend for Sin, Gen and GanAsm small clusters. The high polarizability of the Scn clusters (PAPID) is attributed to arise from dangling bonds at the surface of the cluster.
	p. 510-518 Kamal A. Kandeel and Ahmed S. A. Youssef Article: Reactions of 5-Aroylmethylene-3-benzyl-4-oxo-2-thioxo-1,3-thiazolidines with Nitrile Oxides Molecules 2001, 6(6), 510-518; doi:10.3390/60600510 Received: 4 July 2000; in revised form: 13 January 2001 / Accepted: 30 April 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (47 KB) Abstract: E,Z-5-Aroylmethylene-3-benzyl-4-oxo-2-thioxo-1,3-thiazolidines (3a-c) react with 4-methoxy and 4-chlorophenylnitrile oxides (4a and b) in pyridine solution to afford one or more of the following compounds: Z-3, Z-2,4-dioxo analogues 5 and 3,6-diaryl-1,4,2,5-dioxadiazines (6a-b). The interconversion route is discussed and the structures of all of the synthesised compounds are proven by microanalytical and spectral data.
	p. 519-527 A. M. El-Agrody, M. S. Abd El-Latif, N. A. El-Hady, A. H. Fakery and A. H. Bedair Article: Heteroaromatization with 4-Hydroxycoumarin Part II: Synthesis of Some New Pyrano[2,3-d]pyrimidines, [1,2,4]triazolo[1,5-c]pyrimidines and Pyrimido[1,6-b]-[1,2,4]triazine Derivatives Molecules 2001, 6(6), 519-527; doi:10.3390/60600519 Received: 8 June 2000; in revised form: 16 September 2000 / Accepted: 15 February 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (48 KB) Abstract: A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via reaction of 9-amino-7-(4’-chlorophenyl)-8,9-dihydro-8-imino-6H,7H-[1]benzopyrano[3`,4`:5,6]pyrano[2,3-d]pyrimidine-6-one (3) with a variety of reagents. Pyrano[2,3-d]pyrimidine-6-ones 5a, 8a-c and pyrimido[1,6-b][1,2,4]-triazine-3,14-dione (6) were also prepared. The antimicrobial activity of some of the synthesized compounds was tested.
	p. 528-532 Fu An Wang, Jiqin Zhu, Jianchi Song, Shengli Zhai and Lei Wang Article: Synthesis of Bis (2,2,6,6-tetramethyl-4-piperidinyl) Maleate Molecules 2001, 6(6), 528-532; doi:10.3390/60600528 Received: 22 August 2000; in revised form: 20 March 2001 / Accepted: 8 May 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (47 KB) Abstract: Bis (2,2,6,6-tetramethyl-4-piperidinyl) maleate is a key intermediate for the synthesis of new types of hindered amine light stabilizers (HALS), so new synthetic routes to this compound are desirable. Through an orthogonal design and follow-up single factor experiments optimal reaction conditions were determined for synthesizing bis (2,2,6,6-tetramethyl-4-piperidiny) maleate using dimethyl maleate, 2,2,6,6-tetramethyl-4-piperidinol and zeolite supported tetraisopropyl titanate as catalyst. Under the selected conditions, the reaction rate and the yield are high, the selectivity is good, the catalyst can be recycled, and there are fewer wastes. The product was characterized and quantitatively analyzed by elemental analysis, mass spectrometry, infrared spectroscopy, nuclear magnetic resonance spectroscopy and ion suppression chromatography.
	p. 533-539 Edgardo N. Durantini Article: Synthesis of 5-(4-X-Phenyl)-10,15,20-tris(Substituted Phenyl) Porphyrins Using Dipyrromethanes Molecules 2001, 6(6), 533-539; doi:10.3390/60600533 Received: 27 November 2000; in revised form: 8 May 2001 / Accepted: 9 May 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (37 KB) Abstract: 5-(4-X-Phenyl)-10,15,20-tris(substituted phenyl) porphyrins (4-6) were synthesized from meso-(substituted phenyl) dipyrromethanes (1-3), which in turn were prepared in yields of 75-92 %. This synthetic pathway was compared with the binary mixed aldehyde and pyrrole condensation method. The reported dipyrromethane approach is advantageous for porphyrins substituted by –OCH3 (4) and -F (6) groups (12-14 %), while the yield of porphyrins bearing –N(CH3)2 (5) groups was similar (~0.3 %) by both methods.
	p. 540-550 Klaus Martens, Anke Scheunemann, Kerstin Drexler, Heinz Dehne, Helmut Reinke and Manfred Michalik Article: Alkylation of Zwitterionic Thiooxalic Acid Derivatives Molecules 2001, 6(6), 540-550; doi:10.3390/60600540 Received: 12 March 2001 / Accepted: 10 May 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (190 KB) Abstract: The new S-alkyl thiooxal-1-hydrazono-2-amidrazonium halides 2-4 were synthesized by reaction of the corresponding zwitterionic thiooxalic acid derivatives 1 with alkyl halides in methanol. The structures of compounds 4b and 4d were proven by X-ray structural analysis. Both compounds form an interesting intermolecular network of hydrogen bonds in the solid state.
	p. 551-556 Geetha Gopalakrishnan, N. D. Pradeep Singh and V. Kasinath Article: Photomediated Transformation of Salannin, a Tetranortriterpenoid from Azadirachta indica A. Juss Molecules 2001, 6(6), 551-556; doi:10.3390/60600551 Received: 6 December 2000; in revised form: 11 May 2001 / Accepted: 14 May 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (33 KB) Abstract: Photolysis of Salannin (1), an important bioactive compound from Azadirachta indica A.Juss (Neem), affords Δ17-isosalanninolide (2), a hitherto unknown compound, along with isosalanninolide (3) and salanninolide (4). A probable mechanism has been suggested. While the mechanism of formation of 2 involves both a [4+2] cycloaddition and a [1,3] sigmatropic shift in the furan and D-rings, respectively, formation of 3 and 4 involves the decomposition of an ozonoide-like peroxide intermediate.
	p. 557-573 Walid Fathalla, Michal Čajan and Pavel Pazdera Article: Regioselectivity of Electrophilic Attack on 4-Methyl-1-thioxo-1,2,4,5-tetrahydro[1,2,4]triazolo[4,3-a]quinazolin-5-one. Part 1: Reactions at the Sulfur Atom Molecules 2001, 6(6), 557-573; doi:10.3390/60600557 Received: 16 July 2000; in revised form: 21 May 2001 / Accepted: 23 May 2001 / Published: 31 May 2001 Show/Hide Abstract | Download PDF Full-text (180 KB) Abstract: The regioselectivity of the model compound 4-methyl-1-thioxo-1,2,4,5-tetrahydro[1,2,4]triazolo[4,3-a]quinazolin-5-one (3) towards different electrophiles was studied. Compound 3 reacts with alkyl and aryl halides to give the corresponding S-substituted derivatives. The reaction of the model thioamide with acyl halides proceeds by the formation of kinetically controlled S-acyl derivatives followed by a transacylation reaction to give the N2-acyl derivatives as thermodynamically controlled products. Theoretical DFT computational studies supported the explanation of these results. The synthesized compounds were characterized by FTIR, 1H-NMR, 13C-NMR, and mass spectroscopy.
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