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Mostrando ítems 21-30 de 36
Una nueva ruta para la sintesis de la feromona sexual de la polilla de la papa, Scrobipalpopsis solanivora
(1996)
Acetato de (E)-3-dodecenilo, principal componente de feromona de Scrobipal-popsis solanivora, se preparó con un rendimiento total del 61 %. El precursor, 3-dodecin-1-ol, se preparó en el paso de un recipiente mediante la ...
Synthesis and Determination of Antibacterial Activity of Jacaranone and Synthetic Analogs
(2017)
Natural product jacaranone, 1, and five more analog derivatives were synthesized and its antibacterial activity against
Gram-positive and Gram-negative microorganisms was tested. One of these derivatives, 5, ...
Synthesis of N-[3-(prop-1-yn-1-yl)phenyl] benzene sulfonamide and Determination of its Antibacterial Activity
(2019-07-25)
The synthesis of N-[3-(prop-1-yn-1-yl)phenyl] benzenesulfonamide was performed and its antibacterial activity against Staphylococcus aureus and Escherichia coli was determined. Minimalinhibitory concentrations (MIC) of ...
Stereospecific Synthesis of (E, Z)- and (Z, Z)-Hexadeca-10,12-dienal. Sex Pheromone Components of Diaphania hyalinata
(1998)
Isomeric (E,Z)- and (Z,Z)-hexadeca-10,12-dienal were prepared, stereospecifically, in 51% and 43% overall yields from dec-1-yne.
Palladium-Catalyzed One-Pot Conversion of Aldehydes and Ketones into 4‑Substituted Homopropargyl Alcohols and 5‑En-3-yn-1-ols
(2017)
Sequential treatment of 2,3-dichloropropene
with magnesium and n-BuLi generated the equivalent of 1,3-
dilithiopropyne, which adds regiospecifically to aldehydes and
ketones to produce homopropargyl alcohols. The ...
An Improved stereospecific synthesis of (Z,E)-tetradecadienal. Sex pheromone component of Stenoma cecropia
(1998)
(Z,E)-9, 11-Tetradecadienal, a sex pheromone component of Stenoma cecropia, has been synthesized in 7 steps and 61% overall yield. The synthesis utilized a palladium catalyzed coupling between 9-decynyl tert-butyldinethylsilyl ...
1-Nitro-4-(1-propyn-1-yl)benzene
(2019)
The title compound, C9H7NO2, was prepared by alkynylation of 4-iodonitrobenzene with 1,3-dilithiopropyne in the presence of 1 equivalent of CuI and catalytic amounts of Pd(PPh3)2Cl2. The complete molecule is generated ...
A Facile Method for the Titration of Organolithium Reagents using Naphtylamine or Naphtylmethylamine as Indicators
(2019)
A simple method for the titration of alkyllithiums with sec-butanol, using naphtylamine or naphtylmethylamine as color
indicator, is reported. Both amines gave sharp-end points, easily determined by color changes from ...
Crystal structures and biological activity of 1,1,4-triphenyl-substituted 1,3-enyne compounds
(2019)
1,3-Enyne structural motifs are versatile building blocks in organic synthesis and
occur widely in various natural products with many of them being highly active
as cytotoxic macrolides and antitumour antibiotics. This ...
5,5-Diphenyl-cis-penta-2,4-dienoic acid
(2019)
In the title compound, C17H14O2, the dihedral angle between the phenyl rings is 76.52 (7)°. In the crystal, pairwise O—H⋯O hydrogen bonds link the molecules into carboxylic acid inversion dimers.