Now showing items 1-10 of 10

    • Crystal structure of (E)-2-(tert-butylamino)-4-(tertbutylimino)naphthalen-1(4H)-one 

      Lamoureux Lamontagne, Guy; Alvarado Rojas, Mónica; Pineda Cedeño, Leslie William (2018)
      The title compound, C18H24N2O, is the first example of a naphthoquinone imine derivative isolated in the 4-imine/2-amine tautomeric form having bulky alkyl substituents at the N atoms. The molecular conformation is stabilized ...
    • Crystal structure of 4-[(adamantan-1-yl)amino]naphthalene-1,2-dione 

      Lamoureux Lamontagne, Guy; Pineda Cedeño, Leslie William; Alvarado Rojas, Mónica (2019)
      The title compound, C20H21NO2, an example of a stable 1,2-naphthoquinone, was determined by single-crystal X-ray diffraction analysis at 100 K. This structure illustrates steric buttressing of the adamantanyl group, forcing ...
    • Efficient syntheses of streptocarpone and (±)-a-dunnione 

      Pérez Sánchez, Alice Lorena; Lamoureux Lamontagne, Guy; Sánchez Kopper, Andrés (2007)
      An efficient divergent synthesis of both streptocarpone and racemic α-dunnione from lawsone are described. A one-pot, formal [3+2] cyclization to form a furanonaphthoquinone directly provided a common intermediate.
    • General Chemistry Without Orbitals 

      Lamoureux Lamontagne, Guy; Ogilvie, John F. (2020)
      We illustrate the solutions of Schroedinger's equation for the hydrogen atom in coordinates of all four systems, and differentiate the applicability of orbitals in these four systems. We present reasons that future textbooks ...
    • Neutral organic redox pairs based on sterically hindered hydroquinone/benzoquinone derivatives for dye-sensitized solar cells 

      Flores Díaz, Natalie; Soto Navarro, Andrea; Freitag, Marina; Lamoureux Lamontagne, Guy; Pineda Cedeño, Leslie William (2018-06)
      Substituted derivatives of hydroquinone/benzoquinone were studied as organic redox mediators in the electrolyte for dye-sensitized solar cells (DSSCs). Thus, di-tert-butylhydroquinone (DTHQ), thymohydroquinone (ThymHQ) and ...
    • Reactivity and structure of derivatives of 2-hydroxy-1,4-naphthoquinone (lawsone) 

      Lamoureux Lamontagne, Guy; Pérez Sánchez, Alice Lorena; Araya Marchena, Mario Esteban; Agüero Robles, Christian Gerardo (2007-11)
      The structures of two derivatives of 2-hydroxy-1,4-naphthoquinone (lawsone) are examined using the density functional theory (DFT) hybrid functional B3LYP. Using the optimized structure of lawsone acetate, the reactivity ...
    • Sudoku Puzzles for First-Year Organic Chemistry Students 

      Pérez Sánchez, Alice Lorena; Lamoureux Lamontagne, Guy (2007-04)
      We use sudoku puzzles to help the students (i) learn the correspondence between the names of the amino acids, their abbreviations, and codes and (ii) learn the correspondence between the names of the functional groups, ...
    • Synthesis and biological evaluation of novel ferrocene–naphthoquinones as antiplasmodial agents 

      García Barrantes, Pedro M.; Lamoureux Lamontagne, Guy; Pérez Sánchez, Alice Lorena; García Sánchez, Rory N.; Martínez, Antonio R.; San Feliciano, Arturo (2013-12)
      This work deals with the synthesis and evaluation of new compounds designed by combination of 1,4-naphthoquinone and ferrocene fragments in a 3-ferrocenylmethyl-2-hydroxy-1,4-naphthoquinone arrangement. A practical coupling ...
    • Synthesis of 2-hydroxy-3-substituted naphthoquinones using the Heck reaction 

      Pérez Sánchez, Alice Lorena; Lamoureux Lamontagne, Guy; Zhen-Wu, Bi Yun (2007-06)
      An efficient Heck coupling of 2-hydroxy-3-iodo-naphthoquinone with a series of electron-deficient alkenes in aqueous solution has been accomplished. The method is characterized by simple conditions and facile work-up to ...
    • Synthesis of Iodinated Naphthoquinones Using Morpholine-Iodine Complex 

      Pérez Sánchez, Alice Lorena; Lamoureux Lamontagne, Guy; Herrera Echeverría, Adelita (Synthetic Communications Vol. 34, No. 18, pp. 3389–3397, 2004, 2004)
      The efficient synthesis of 2‐hydroxy‐3‐iodo‐1,4‐naphthoquinone (3), 2‐amino‐3‐iodo‐1,4‐naphthoquinone (4), and 2‐iodo‐1,4‐naphthoquinone (5) have been developed using the parent naphthoquinone in combination with the ...