Chagit Denekamp

Summary

Affiliation: Technion-Israel Institute of Technology
Country: Israel

Publications

  1. ncbi request reprint Ion-neutral complexes formation and 1,3-proton transfer in the chemical ionization of alkylcyclohexyl benzoates
    Chagit Denekamp
    Department of Chemistry, Institute of Catalysis Science and Technology, Lise Meitner Minerva Center for Computational Quantum Chemistry, Technion Israel Institute of Technology, Haifa 32000, Israel
    Chem Commun (Camb) . 2002
  2. ncbi request reprint Homolytic cleavages in pyridinium ions, an excited state process
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa, Israel
    J Am Soc Mass Spectrom 14:790-801. 2003
  3. ncbi request reprint Anion-binding properties of the tripyrrolemethane group: a combined experimental and theoretical study
    Chagit Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Technion City, 32000, Haifa, Israel
    Chemistry 13:657-65. 2007
  4. ncbi request reprint Two separable conformers of TATP and analogues exist at room temperature
    C Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Haifa 32000, Israel
    Org Lett 7:2461-4. 2005
  5. ncbi request reprint Benzene loss from trityl cations--a mechanistic study
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa, Israel
    J Am Soc Mass Spectrom 17:730-6. 2006
  6. ncbi request reprint Development of mass spectrometric method for analysis of cyclic nitramine explosives DTIW and HNIW
    Chagit Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Haifa
    Anal Chem 77:7796-800. 2005
  7. ncbi request reprint A new charge derivatization procedure for peptide sequencing
    Denekamp Chagit
    Department of Chemistry, Technion, Israel Institute of Technology, Haifa 32000, Israel
    Org Biomol Chem 3:2503-4. 2005
  8. ncbi request reprint Formation and stability of oxocarbenium ions from glycosides
    Chagit Denekamp
    Department of Chemistry, Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa 32000, Israel
    J Mass Spectrom 40:1055-63. 2005
  9. ncbi request reprint Anomeric distinction and oxonium ion formation in acetylated glycosides
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa 32000, Israel
    J Mass Spectrom 40:765-71. 2005
  10. ncbi request reprint Radical induced fragmentation of amino acid esters using triphenylcorrole(CuIII) complexes
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa, Israel
    J Am Soc Mass Spectrom 18:791-801. 2007

Collaborators

Detail Information

Publications13

  1. ncbi request reprint Ion-neutral complexes formation and 1,3-proton transfer in the chemical ionization of alkylcyclohexyl benzoates
    Chagit Denekamp
    Department of Chemistry, Institute of Catalysis Science and Technology, Lise Meitner Minerva Center for Computational Quantum Chemistry, Technion Israel Institute of Technology, Haifa 32000, Israel
    Chem Commun (Camb) . 2002
    ..CI, CID, labelling experiments and DFT calculations are used for the elucidation of the mechanism for the decomposition of cyclohexyl benzoates, which proceeds through 1,3-H shift and two equilibrating ion-neutral complexes...
  2. ncbi request reprint Homolytic cleavages in pyridinium ions, an excited state process
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa, Israel
    J Am Soc Mass Spectrom 14:790-801. 2003
    ..Thus, the pyridinium system that contains a p-chloro benzyl moiety loses a benzyl radical readily while the analogous triphenylphosphonium cation is very stable under the same conditions...
  3. ncbi request reprint Anion-binding properties of the tripyrrolemethane group: a combined experimental and theoretical study
    Chagit Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Technion City, 32000, Haifa, Israel
    Chemistry 13:657-65. 2007
    ..Although the affinity of the tripyrrolemethane ligand for other ions was negligible in solution, gas-phase studies show that complexation with larger halide ions is favoured over complexation with fluoride...
  4. ncbi request reprint Two separable conformers of TATP and analogues exist at room temperature
    C Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Haifa 32000, Israel
    Org Lett 7:2461-4. 2005
    ..The crystal structure of the analogous tricyclohexanone triperoxide also indicates the presence of two conformers...
  5. ncbi request reprint Benzene loss from trityl cations--a mechanistic study
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa, Israel
    J Am Soc Mass Spectrom 17:730-6. 2006
    ..The combination of experimental evidence and computational results leads to a clear description of transition states and reaction intermediates...
  6. ncbi request reprint Development of mass spectrometric method for analysis of cyclic nitramine explosives DTIW and HNIW
    Chagit Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Haifa
    Anal Chem 77:7796-800. 2005
    ..For these anions, limit of detection was also found. To understand some of the HNIW fragmentation pathways, DFT calculations were used...
  7. ncbi request reprint A new charge derivatization procedure for peptide sequencing
    Denekamp Chagit
    Department of Chemistry, Technion, Israel Institute of Technology, Haifa 32000, Israel
    Org Biomol Chem 3:2503-4. 2005
    ..Derivatization of peptides by a trityl cation-containing group and collision-induced dissociation measurements of the cationized peptides results in informative spectra that simplify peptide sequencing...
  8. ncbi request reprint Formation and stability of oxocarbenium ions from glycosides
    Chagit Denekamp
    Department of Chemistry, Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa 32000, Israel
    J Mass Spectrom 40:1055-63. 2005
    ..This indicates that the SN1-like mechanism that is commonly proposed for this reaction is not always valid. Moderate leaving group effect is also detected in a series of thioaryl glucopyranosides...
  9. ncbi request reprint Anomeric distinction and oxonium ion formation in acetylated glycosides
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa 32000, Israel
    J Mass Spectrom 40:765-71. 2005
    ..It is also found that the configuration at position 4 of the carbohydrate plays a major role in the rate of formation and stability of oxocarbenium ions...
  10. ncbi request reprint Radical induced fragmentation of amino acid esters using triphenylcorrole(CuIII) complexes
    Chagit Denekamp
    Department of Chemistry and Institute of Catalysis Science and Technology, Technion Israel Institute of Technology, Haifa, Israel
    J Am Soc Mass Spectrom 18:791-801. 2007
    ..Distinctive CID spectra were also recorded for leucine and isoleucine complexes. Initial results with short peptides are also shown...
  11. ncbi request reprint Tris(2,4,6-trimethoxyphenyl)methyl carbenium ion for charge derivatization of amines and amino acids
    Chagit Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Haifa, Israel
    J Mass Spectrom 43:623-7. 2008
    ..This is utilized here to facilitate the matrix assisted laser desorption ionization-time-of-flight (MALDI-TOF) analysis of these compounds...
  12. ncbi request reprint Substituent effect and multisite protonation in the fragmentation of alkyl benzoates
    Chagit Denekamp
    Department of Chemistry, Technion Israel Institute of Technology, Haifa 32000, Israel
    J Mass Spectrom 37:336-42. 2002
    ..It is most probable that the carbonyl protonated form is a common intermediate in the fragmentation process, regardless of the protonation site...
  13. doi request reprint Towards a fully conjugated, double-stranded cycle: a mass spectrometric and theoretical study
    Chagit Denekamp
    Schulich Faculty of Chemistry, Technion, Technion City, 32000 Haifa, Israel
    Chemistry 14:1628-37. 2008
    ..The key driving force for such an isomerization would be the considerable relief of strain energy...