Raimonds VALTERS

Professor Raimonds VALTERS Department of Chemistry, Faculty of Material Science and Applied Chemistry, Riga Technical University Azenes iela 14/24 Riga, LV 1048 LATVIA Phone: +371 67089231, +371 67225361 Fax: +371 67821153 E-mail: rvalters@latnet.lv chem@lza.lv

Born: May 27, 1938, Riga, Latvia

Interests:

• Organic Chemistry
• Tautomerism of Organic Compounds
• Chemistry of Heterocyclic Compounds
• Chemistry of Quinonoid Compounds

Main Research:

Ring-chain tautomerism of organic compounds. Intramolecular heterocyclization reactions. Synthesis of surface active derivatives of quinones for Langmuir-Blodgett films. Synthesis of hetarylsubstituted 1,4-benzoquinones and investigation of their properties.

Languages: English, Latvian, Russian

Education:

• Riga Technical University (Faculty of Chemistry) cum laude, 1961
• Dr.chem. ( Candidate of Science in former USSR, Ph.D. in Western countries), Riga Technical University, 1965
• Dr. habil. chem. (Doctor of Science in former USSR), Latvian Academy of Sciences, 1975

Experience:

• Junior and Senior Researcher, Faculty of Chemistry, Riga Technical University (RTU), 1961-1976
• Head of Research Sector, Faculty of Chemistry, RTU, 1976-1986
• Chief Researcher, Faculty of Chemistry, RTU, 1986-1988
• Professor of the Department of Organic Chemistry, Faculty of Chemical Technology, RTU, 1988 - 1999
• Head of Professor Group of Organic Chemistry, Faculty of Material Science and Applied Chemistry, RTU, 1999 - 2002
• Professor of the Department of Chemistry,  2002 -
• Chairman, Division of Chemical, Biological and Medical Sciences, Latvian Academy of Sciences, 1998
• Secretary General, Latvian Academy of Sciences, 2001 - 2008
• Vicepresident, Latvian Academy of Sciences, 2008 -

Honours and Awards:

• Corresponding Member, Latvian Academy of Sciences, 1992
• Full Member, Latvian Academy of Sciences, 1992
• The Latvian Academy of Sciences Gustavs Vanags Prize (in Chemistry), 1982
• The Riga Technical University Gustavs Vanags Medal, 1991
• The Solomon Hiller Medal (Latvian Institute of Organic Synthesis), 1998
• D. H. Grindel Medal (Company “Grindex”, Latvia), 2004

Professional Activities and Memberships:

• Chairman, Latvian State Scientific Qualification Comission, 1999 –
• Chairman (since 2005), Member(since 1996), Latvian Council for Election of State Emeritus Scientists
• Member, Senate of Riga Technical University, 2002 - 2006
• Member, Professors Election Council of Faculty of Material Sciences and Applied Chemistry, Riga Technical University,  1999-
• Member, Habilitation Council (Organic Chemistry) , Riga Technical University, 1990-1999
• Member, Promotion Council in Chemistry (PO- 1), Riga Technical University, 1999 -
• Member, Senate and Board (Chairman, 2001 - 2008) of the Latvian Academy of Sciences, 1998 -
• Member, Membership Commission of the Latvian Academy of Sciences, 1998 -
• Member, The Latvian Academy of Sciences Gustavs Vanags Prize (in Chemistry) Committee, 1998 -
• Member of Advisory Board, Proceedings of the Latvian Academy of Sciences, Section B, 1998 - 
• Member of Advisory Board, Chemistry of Heterocyclic Compounds, 2010 -
• Member of  Advisory Board, Latvian Academic Library, 1994- 2007
• Member, Latvian Council of Science, 2003 - 2007
• Member, Latvian Council of Science Expert Committee for Chemistry, 2003 - 2007
• Member, Latvian Council of Science Expert Committee for Natural Sciences,  2007 - 2010
• Member of Latvian Taiho Foundation, 1996 - 2007
• Member , International Society of Heterocyclic Chemistry, 1996 - 2007

Courses

Riga Technical University :

• Organic Chemistry, 1987 - 1994, 1999 -
• Chemistry of Heterocyclic Compounds, 1993 - 1997
• Carbohydrate Chemistry, 1993 - 1997
• Physical Methods in Organic Chemistry, 1994 -
• Supramolecular Chemistry, 1996 - 1998
• Nuclear Magnetic Resonance Spetroscopy, 2005 -

Recent/Representative Publications:

• R.E.Valters and W.Flitsch. Ring-Chain Tautomerism /Ed. A.R.Katritzky/. New York and London: Plenum, 1985, XI + 278 pp.
• R.E.Valters, F.Fülöp, and D.Korbonits. Recent developments in ring-chain tautomerism. I. Intramolecular reversible addition reactions to the C=O group. - Adv. Heterocycl. Chem., 1995, vol. 64, pp. 251-321.
• R.E.Valters, F.Fülöp, and D.Korbonits. Recent developments in ring-chain tautomerism. II. Intramolecular reversible addition reactions to the C=N, C=N, C=C, and C=C groups. - Adv. Heterocycl. Chem., 1996, vol. 66, pp.1-71.
• R.Valters, G.Karlivans, J.Gulbis, M.Utinans, and A.Bace. A general method for the synthesis of trichloro-1,4-benzoquinonylsubstituted sulfur containing heterocycles. - Phosphorus, Sulfur and Silicon, 1994, vol. 95/96, pp. 457-461.
• G.A.Karlivan, A.E.Batse, and R.E.Valters. Synthesis and ring-chain isomerism of acid chlorides and amides of 2-(2-pyridyl- and 2-quinolyl-carbonyl)benzoic acids. - Chem. Heterocycl. Comp., 1994, vol. 30, N 4, pp. 438-443.
• G.A.Karlivan, R.E.Valter, A.E.Batse, M.V.Petrova, and R.B.Kampare. An unusual reaction of 2-(2-pyridylcarbonyl)- and 2-(2-quinolylcarbonyl)benzoyl chlorides with p-nitroaniline. - Chem. Heterocycl. Comp., 1995, vol. 31, N 7, pp. 817-822.
• G.A.Karlivan, R.E.Valter, A.E.Batse, and J.V.Gulbis. Novel condensed  heterocyclic derivatives of benzofuran based
  on 2,5-dihydroxy-3,4,6,7-tetrachloro-2,3-dihydrobenzo[b]furan. - Chem. Heterocycl. Comp., 1996, vol. 32, N 4, pp. 400-404.
• G.A.Karlivan, R.E.Valter, A.E.Batse, and J.V.Gulbis. Synthesis and conversions of 5-(3,5,6-trichloro-1,4-benzoquinone-2-yl)-2-isopropylidenhydrazino-thiazole and 2-isopropylidenazinothiazolines. - Chem. Heterocycl. Comp., 1996, vol. 32, N 10, pp. 1227-1233.
• R.Valters, G.Karlivans, A.Bace, and J.Gulbis. Synthesis of [b]-fused benzo[d]furano heterocycles. -  Phosphorus, Sulfur and Silicon, 1997, vol. 120/121, pp. 411-412
• G.A.Karlivans, R.E.Valters, and J.V.Gulbis. Synthesis of the precursors of bis(trichloro-1,4-benzoquinonyl)tetrathiafulvalenes. - Chem. Heterocycl. Comp., 1998, vol. 34, N 8, pp. 907-911.
• V.A.Yanchishin, G.A.Karlivan, and R.E.Valter.   Synthesis and properties of dipyridinium betaines of derivatives of 1,4-benzoquinone and tetracyanoquinodimethane. - Chem. Heterocycl. Comp., 1998, vol. 34, N 3, pp. 312-315.
• G.A.Karlivans, R.E.Valters and A.E.Bace. Synthesis of    trichloro-1,4-benzoquinonylsubs-
  tituted 2,2'-bithiazoles. - Chem. Heterocycl. Comp.,1999, vol.35, N 7, pp. 866-870.
• R.Valters, G.Karlivans, J.Gulbis, and A.Bace. Synthesis of novel trichloro-1,4-benzoquinonylsubstituted heterocycles. – Phosphorus, Sulfur and Silicon, 1999, Vol. 153/154, pp. 411 – 412.
• N.G.Batenko, R.E.Valters, and G.A.Karlivans. Synthesis of 2,5-bis(2-aminothiazole-5-yl)-3,6 -dichloro- -1,4-benzoquinones. – Chem. Heterocycl. Comp., 2000, vol. 36, N 6, pp. 733 – 737.
• V.Gulbis and R.E.Valters.  Synthesis of 3-N,N-dialkylamino-5-(3,5,6-trichloro-1,4-benzoquinon-2-yl)thiazoline-2-thiones. – Chem. Heterocycl. Comp., 2001, vol. 37, N 11, pp. 1424-1428. 
• N.G.Batenko, R.E.Valters, and G.A.Karlivans. Nucleophilic substitution of chlorine atoms in 2,5-dichloro-3,6-bis(2-piperidinothiazol-5-yl)-1,4-benzoquinone. - Scientific Proceedings of Riga Technical University: Material Science and Applied Chemistry, 2001, Ser. 1, vol. 3, pp. 166-169.
• G. Karlivans, R. Valters. Synthesis of 2-(b-hetarylaminoethyl)-3,5,6-trichloro- 1,4-benzoquinones. - Chem. Heterocycl. Comp., 2003, vol. 39, N 12, pp.  1617-1622.
• G.A.Karlivans and R.E.Valters. Oxidative recyclization of 5-hydroxy-2-(2-pyrimidylamino)-4,6,7-trichloro-2,3-dihydrobenzo[b]furan. - Chem. Heterocycl. Comp. , 2004, vol. 40, N 6, pp. 807 – 810.
• N. G. Batenko, G. A. Karlivans, and R. E. Valters. A new method for the synthesis of 2,5-bisheteroaryl-3,6-dichloro-1,4-benzoquinones. - Heterocycles, 2005, vol. 65, N 7, pp. 1569-1576.
• N. G. Batenko, G. A. Karlivans, and R. E. Valters. Methods of synthesis of heteroarylsubstituted 1,4-benzo- and 1,4-naphthoquinones. (Review). Chem. Heterocycl. Comp., 2005, vol. 41, N6, pp. 691-717.
• G.Karlivans, R.Valters. Acetylation of 4,6,7-trichloro-2-heteroarylamino-5-hydroxy-2,3-dihydrobenzo[b]furans. – Scientific Proceedings of Riga Technical University: Material Svience and Applied Chemistry, 2005, Ser. 1, vol. 10, p. 13-15.
• N.Batenko, S.Belyakov, and R.Valters. The structure of 2-phenylazo-5-(trichloro-1,4-benzoquinonyl)thiazole. - Chem. Heterocycl. Comp., 2009, vol. 45, N 5, pp. 606-610.
• N.Batenko, O.Popova, S.Belyakov, and R.Valters. Synthesis of aminovinylderivatives of quinoline- and isoquinoline-5,8-diones. -- Chem. Heterocycl. Comp., 2012, vol. 48, N 6, pp. 888-891.
• N. Batenko, S. Belyakov, R. Valters. Unexpected formation of naphtho[2,1-d]thiazole-6,9-dione from 3,5,6-trichloro-2-[2-(E-phenyldiazenyl)thiazol-5-yl]-1,4-benzoquinone. Chemistry of Heterocyclic Compounds. – 2013, Vol. 48, No. 10, p. 1571-1573.
• N. Batenko, S. Belyakov, G. Kiselovs, R. Valters. Synthesis of 6,7-dichloropyrido[1,2-a]benzimidazole-8,9-dione and its analogues and their reactions with nucleophiles. Tetrahedron Letters.- 2013, Vol. 54, 4697-4699.
• N. Batenko, A. Kricka, S. Belyakov, B. Turovska, R. Valters, A novel method for the synthesis of benzimidazole - based 1,4-quinone derivatives. Tetrahedron Letters. -, 2016, Vol. 57, No 3, p. 292-295.
• N. Batenko, I. Neibolte, S. Belyakov, R. Valters, Synthesis, Characterization and Photophysical Properties of naphtho[2,3-b]indolizine-6,11-dione Derivatives. Journal of Fluorescence. - 2016, Vol. 26, No 1, p.23-29.

Research Projects:

• R.Valters (Head of Project). Elaboration of the Methods of the Synthesis of Quinonoid Compounds Linked to Heterocycle and Investigation of Their Intramolecular Electronic Interactions. Latvian Council of Science (1993-1996).
• R.Valters (Head of Project). Synthesis of Hetarylsubstituted Quinonoid Compounds and Investigation of Their Properties. Latvian Council of Science (1997-2000).
• R.Valters (Head of Project). Synthesis of the Derivatives of Hetaryl and Dihetaryl Substituted 1,4-Benzoquinones and Investigation of Their Properties. Latvian Council of Science (2001 – 2003)
• R. Valters (Head of Project). Synthesis of the Derivatives of 1,4-Benzoquinones Connected with Heterocycle Moiety(ies) via C—C Bond or –CH₂CH₂- Linker and Investigation of their Properties. Latvian Council of Science (2005-2008)
• R.Valters (Head of Project). Synthesis of Racemic and Chiral ß-Aminoacid Derivatives and Heterylsubstituted 1,4-Benzoquinones Fused with Heterocycles.  Latvian Council of Science (2009-2012).

  Avocations -
          - Tourism

   

Last update 09.02.2016