ORGANIC CHEMISTRY DEPARTMENT
CÁCERES
HOME-PAGE
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Wellcome to the WWW page of the Organic Chemistry Department
in Cáceres.
The Department of Organic Chemistry is located in the University Campus
in Cáceres, and it
is divided between the Faculty of Veterinary and the Plitechnic School.
The University Campus is situated in the Avenida de la Universidad, not
far from the twon centre, to which is collegated by several bus lines.
Telephones:
Faculty of Veterinary: 34-(9)27-257158 / 257159
Polytechnic School: 34-(9)27-257210
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Fax: 34-(9)27-257110; 34-(9)27-257210
RESEARCH GROUP
The group is currently integrated by the following staff persons:
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Dr. Tomás Torroba Pérez, professor. E-mail: ttorroba@unex.es
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Dr. Vicente Ramos Estrada, associate professor.
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Dra. Cecilia Polo Polo, associate professor. E-mail: cpolo@unex.es
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Dr. Carlos Fernández Marcos, junior lecturer. E-mail: cfernan@unex.es
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Dña. Mari Cruz Pozo Carrero, part-time lecturer. E-mail: cruzpozo@unex.es
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Dr. Oleg A. Rakitin, visiting professor. E-mail: orakitin@unex.es
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D. José Delgado, technician. E-mail: jdelgado@unex.es
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Dña. Susana Barriga Falcón, PhD Student. E-mail: sbarriga@unex.es
RESEARCH PROJECT
TITLE: SYNTHESIS OF SULFUR-NITROGEN CONTAINING POLYHETEROCYCLIC COMPOUNDS
AS A SOURCE OF NEW MATERIALS
KEYWORDS: Heterocycles, new materials, superconductors,
liquid
crystals, non-linear-optics.
PROJECT LEADER: Dr. Tomás Torroba Pérez INSTITUTION: Universidad
de Extremadura PHONE: 927 / 257159 ADDRESS: Avenida de la Universidad,
s/n. 10071 CÁCERES
SUMMARY:
The overall aim of this project is to synthesize new sulfur-nitrogen
polinuclear heterocyclic ring systems of theoretical and structural interest.
The systems could be aromatic as well as antiaromatic systems, or compounds
showing a extended conjugation, that could be useful for experiences as
non linear optical materials, electron rich liquid
crystals or organic conductors. In addition, the project wants to synthesize
some macrocyclic compounds based on the new heterocyclic systems. The donor
properties of sulfur and nitrogen atoms included in this macrocyclic compounds
could be of interest in materials chemistry as new molecular probes for
selective binding of metallic cations or charged and neutral organic compounds.
We would then explore their chemistry and novel electronic properties as
non linear optical materials and electrical conductors, and potential applications
based on their biological activity.
SOME RECENT PUBLICATIONS:
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Breaking the Mould of Discotic Liquid Crystals. Joaquín Barberá,
Oleg A. Raquitin, M. Blanca Ros, Tomás Torroba. Angew.
Chem. Int. Ed. Engl., 36(3), (1998). See
Molecule
of the month of May.
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One-pot synthesis of benzo-1,2,3-dithiazol-6-ones. Tetrahedron.
Accepted for publication (1997).
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Studies on Isocyanides and Related Compounds. A Novel Synthetic Route to
1,6-Dihydro-6-oxopyridine-2-carboxylic Acid Derivatives. Ricardo Bossio,
Carlos F. Marcos, Stefano Marcaccini and Roberto Pepino. Heterocycles,
45, 1589-1592 (1997)
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Bis-[1,2]-dithiolo-[1,4]-thiazine-3,5-dithione derivatives from Hünig's
Base: The Fastest Way to Highly Sulfurated Heterocycles. Carlos F. Marcos,
Cecila Polo, Oleg A. Rakitin, Charles W. Rees and Tomás Torroba.
Angew.
Chem. Int. Ed. Engl., 36, 281-283 (1997). See Scorpionine.
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A Facile Synthesis of ß-Lactams Based on Isocyanide Chemistry. Ricardo
Bossio, Carlos F. Marcos, Stefano Marcaccini and Roberto Pepino. Tetrahedron
Lett., 38, 2519-2520 (1997). Véase
Molecule
of the month of April.
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One pot synthesis and chemistry of bis[1,2]-dithiolopyrroles.Carlos F.
Marcos, Cecila Polo, Oleg A. Rakitin, Charles W. Rees and Tomás
Torroba. Journal
of the Chemical Society,Chem. Commun. 879 (1997).
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Cyclopenta-1,2-dithioles, Cyclopenta-1,2-thiazines and Methyleno-indenes
from New Molecular Rearrangements. O. A. Rakitin, C. W. Rees, D. J. Williams,
T. Torroba. Journal
of Organic Chemistry, Vol. 61, No. 26, 9178-9185 (1996).
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Studies on Isocyanides and Related Compounds. Synthesis of 1-Aryl-2-(tosylamino)-1H-imidazoles,
a Novel Class of Imidazole Derivatives. R. Bossio, S. Marcaccini, R. Pepino,
T. Torroba. Journal
of Organic Chemistry, Vol. 61, No. 6, 2202-2203 (1996).
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Cyclopenta-1,2-dithioles and Cyclopenta-1,2-thiazines from New Molecular
Rearrangements. O. A. Rakitin, C. W. Rees, T. Torroba. Journal
of the Chemical Society, Chemical Communications, No. 3,
427-428 (1996).
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Studies on Isocyanides and Related Compounds. Synthesis of Benzo[c]thiophenes
via Acid Induced Three-Component Reactions. R. Bossio, S. Marcaccini, R.
Pepino, T. Torroba. Journal
of the Chemical Society, Perkin Trans. 1, No. 3, 229-230
(1996).
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Diastereoselective Synthesis of C-Glycosylnorbornenones. J. L. Del Valle,
T. Torroba, P. Paoli, S. Marcaccini, D. J. Williams. Tetrahedron,
Vol. 51, 8259-8278 (1995).
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Synthesis of Acyclic 2,5-Diphenyl-3,4-diarylphenyl C-Glycosides. J. L.
Del Valle, S. Marcaccini, T. Torroba. Liebigs
Annalen der Chemie, 1377-1379 (1995).
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Synthesis of Enantiomerically Pure Tricarbonylchromium(0) Complexes of
ortho-Substituted Styrenes from a(S)-Methylbenzylamine. Paul W.
N. Christian, Susan E. Gibson (née Thomas), Richard Gil, P. Caroline
V. Jones, Carlos F. Marcos, Frank Preschtl and Adam T. Wierzchleyski. Recl.
Trav. Chim. Pays-Bas, 114, 195-202 (1995).
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First Synthesis of Sulfonyl Substituted Tricarbonyl(h6-arene)chromium(0)
Complexes. C. F. Marcos, S. Perrio, M. Salter, A. M. Z. Slawin, S. E. Thomas
y D. J. Williams. J.
Chem. Soc., Chem. Commun., 753-754 (1994).
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Sulfoxides and Sterochemical Control in Organometallic Chemistry. S. L.
Griffiths, C. F. Marcos, S. Perrio, S. P. Saberi, S. E. Thomas, G. J. Tustin
y A. T. Wierzchleyski. Pure
and Appl. Chem., 66, 1565-1572 (1994).
COLLABORATION WITH OTHER RESEARCH GROUPS
At the moment we keep a very active collaboration with the followig
groups:
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Group of New Materials of the C.S.I.C. of Zaragoza.
Liquid crystals.
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Professor Charles W. Rees's group at Imperial
College London (U.K.). N and S heterocycles synthesis.
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Dr. Oleg A. Rakitin's group of the N. D.
Zelinsky Isntitute of Moscow (Russia). Heterocyclic synthesis.
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Dr. Stefano Marcaccini's group at the University
of Florece (Italy). Isonitryle reactions.
USEFUL LINKS
Scorpionine, a molecule synthesised
in our lab in Cáceres, is the head logo of the Webpage of
Electronic Conference on
Heterocyclic Chemistry