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Table of Contents

Molecules, Volume 7, Issue 7 (July 2002), Pages 507-565

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	p. 507-510 R. Chioua, F. Benabdelouahab, M. Chioua, R. Martínez-Alvarez and A. Herrera Fernández Article: Synthesis of Novel Quinazoline Derivatives via Pyrimidine ortho-Quinodimethane Molecules 2002, 7(7), 507-510; doi:10.3390/70700507 Received: 24 September 2001; in revised form: 3 July 2002 / Accepted: 8 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (20 KB) Abstract: The [4+2] cycloaddition between 2,4-diphenylpyrimidine ortho-quinodimethane and dimethyl acetylenedicarboxylate leads to 2,4-diphenylquinazoline-6,7-dicarboxylate (6). 2,4-Diphenylfuro[3,4-g]quinazoline-6,8-dione (7) is also obtained by basic hydrolysis of compound 6, followed by the closure of the resulting diacid in acetic anhydride.
	p. 511-516 Wen Tao Gao and Zhuo Zheng Article: Synthetic Studies on Optically Active Schiff-base Ligands Derived from Condensation of 2-Hydroxyacetophenone and Chiral Diamines Molecules 2002, 7(7), 511-516; doi:10.3390/70700511 Received: 9 April 2002; in revised form: 2 July 2002 / Accepted: 10 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (36 KB) Abstract: Three optically active Schiff-base ligands have been prepared by condensation of 2-hydroxyacetophenone with (1R,2R)-(-)-1,2-diaminocyclohexane, (1S,2S)-(-)-1,2-diphenylethylenediamine or R-(+)-2,2’-diamino-1,1’-binaphthalene, respectively. The products have been characterized by their IR, 1H- and 13C-NMR spectra.
	p. 517-527 Katsuyuki Nakashima, Masashi Imoto, Masakazu Sono, Motoo Tori, Fumihiro Nagashima and Yoshinori Asakawa Article: Total Synthesis of (-)-(7S,10R)-Calamenene and (-)-(7S,10R)-2-Hydroxycalamenene by Use of a Ring-Closing Metathesis Reaction. A Comparison of the cis- and trans-Isomers Molecules 2002, 7(7), 517-527; doi:10.3390/70700517 Received: 2 May 2002; in revised form: 1 July 2002 / Accepted: 8 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (205 KB) Abstract: The title compounds have been synthesized starting from l-menthone by application of a ring-closing metathesis reaction to confirm their reported absolute and relative stereochemistry. Comparisons of the NMR spectra and specific rotations are also discussed.
	p. 528-533 Séverine Torchy, Guy Cordonnier, Didier Barbry and Jean Jacques Vanden Eynde Article: Hydrogen Transfer from Hantzsch 1,4-Dihydropyridines to Carbon-Carbon Double Bonds under Microwave Irradiation Molecules 2002, 7(7), 528-533; doi:10.3390/70700528 Received: 7 February 2002; in revised form: 9 July 2002 / Accepted: 10 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (92 KB) Abstract: 1,4-Dihydropyridines (DHPs) have been used in the reduction of carbon-carbon double bonds under microwave irradiation without solvent. The efficiency of the reactions is dramatically dependent on the steric effects in the DHPs and on the electronic effects in the olefins.
	p. 534-539 Pavol Zahradnik and Radovan Buffa Article: Synthesis and Theoretical Study of a New Type of Pentacyclic bis-Benzothiazolium Compound Molecules 2002, 7(7), 534-539; doi:10.3390/70700534 Received: 10 June 2002; in revised form: 29 July 2002 / Accepted: 30 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (104 KB) Abstract: The synthesis of a new type of pentacyclic benzothiazolium compound -6,13-dihydropyrazino[2,1-b:5,4-b´]bis(1,3-benzothiazole)-7,14-diiumdibromide (2), is reported. Compound 2 was prepared by dimerization of 2-(bromomethyl)benzothiazole. Quantum chemical calculation studies have been carried out on the structures of possible isomers of 2, as well as the products of its deprotonation reactions.
	p. 540-548 Tayseer. A. Abdallah, Hyam. A. Abdelhadi, Huwida M. Hassaneen and Hamdi M. Hassaneen Article: Michael Reactions of Arylidenesulfonylacetonitriles. A New Route to Polyfunctional Benzo[a]quinolizines Molecules 2002, 7(7), 540-548; doi:10.3390/70700540 Received: 29 January 2002; in revised form: 10 July 2002 / Accepted: 11 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (42 KB) Abstract: Arylidenesulfonylacetonitriles react in acetonitrile with 1-methylisoquinoline and isoquinolin-1-yl-acetonitrile in the presence of piperidine to give benzo[a]quinolizines 6,9 and 7,10, respectively. The structures of the products were established on the basis of elemental and spectral analyses and their chemical reactivity.
	p. 549-553 Xu Hong Jiang, Wei Guang Zhang, Yun Zhong and Sue Lein Wang Article: Synthesis and Structure of the Cadmium (II) Complex: [Cd(C5H5N)2(S2CO-n-C4H9)2] Molecules 2002, 7(7), 549-553; doi:10.3390/70700549 Received: 9 February 2002; in revised form: 30 July 2002 / Accepted: 31 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (62 KB) Abstract: The [Cd(C5H5N)2(S2CO-n-C4H9)2] adduct of pyridine with [Cd(S2CO-n-C4H9)2]n was synthesized and characterized by IR, elemental analysis,1H-NMR and X-ray diffraction analysis. The crystasl belong to the monoclinic system, space group P2(1)/c with Z=2. Cell dimensions are a=1.1094(12), b=0.6152(6), c=1.7985(19) nm, • =96.148(2)°, V=1.2204(2)nm3. The structure was refined to R=0.0246 and wR=0.0645 for 2624 reflections with I>2•(I). The complex has a centrosymmetric molecule structure.
	p. 554-565 Chaitanya G. Dave and Rina D. Shah Article: Annellation of Triazole and Tetrazole Systems onto Pyrrolo[2,3-d]pyrimidines: Synthesis of Tetrazolo[1,5-c]-pyrrolo[3,2-e]-pyrimidines and Triazolo[1,5-c]pyrrolo-[3,2-e]pyrimidines as Potential Antibacterial Agents Molecules 2002, 7(7), 554-565; doi:10.3390/70700554 Received: 5 May 2002; in revised form: 12 July 2002 / Accepted: 28 July 2002 / Published: 31 July 2002 Show/Hide Abstract | Download PDF Full-text (60 KB) Abstract: Syntheses of several novel 4-chloropyrrolo[2,3-d]pyrimidines (1), 4-hydrazinopyrrolo[2,3-d]pyrimidines (2) and 3-amino-4-iminopyrrolo[2,3-d]pyrimidines (7) and their use in the synthesis of tetrazolo[1,5-c]pyrrolo[3,2-e]pyrimidines (3) and triazolo[1,5-c]pyrrolo[3,2-e]pyrimidines (4) required for biological screening are reported.
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