Listar Ciencias básicas por autor "Umaña, Christian A."

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    • 1,1-Diphenyl-4-(thiophen-2-yl)but-3-yn-1-ol 

      Umaña, Christian A.; Pineda Cedeño, Leslie William; Cabezas Pizarro, Jorge A. (2018-11)
      The asymmetric unit of the title homopropargyl alcohol, C20H16OS, contains two independent molecules comprising a hydroxy group, a 3-(2-thiophenyl)- propargylic moiety and two aromatic rings linked to a central carbon atom. ...

    • Homopropargyl alcohol 1,1-diphenylbut-3-yn-1-ol 

      Umaña, Christian A.; Pineda Cedeño, Leslie William; Cabezas Pizarro, Jorge A. (2018)
      The asymmetric unit of the title compound, C16H14O, contains one mol­ecule with a central carbon atom having a distorted tetra­hedral geometry made of a propargylic fragment, a hy­droxy group and two aromatic rings. ...

    • Homopropargyl alcohol 5,5-diphenylpent-2-yne-1,5-diol 

      Umaña, Christian A.; Pineda Cedeño, Leslie William; Cabezas Pizarro, Jorge A. (2018)
      In the title compound, C17H16O2, the central carbon atom has a distorted tetra­hedral geometry [spread of angles = 105.71 (8)–112.75 (9)°] for its bonds to a homopropargylic but-2-yn-1-ol moiety, a hy­droxy group and two ...

    • Palladium-Catalyzed One-Pot Conversion of Aldehydes and Ketones into 4‑Substituted Homopropargyl Alcohols and 5‑En-3-yn-1-ols 

      Umaña, Christian A.; Cabezas Pizarro, Jorge A. (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 ...

    • Synthesis and Antibacterial Activity of Aromatic Homopropargyl Alcohols 

      Umaña, Christian A.; Arias Echandi, María Laura; Cabezas Pizarro, Jorge A. (2017)
      Several aromatic homopropargyl alcohols, and derivatives were prepared by one-pot reaction of 1,3-dilithiopropyne (or its equivalent) with aldehydes and ketones. The antibacterial activity, of alcohols ...