Yong Kim

Publications (5)29.13 Total impact

• Article: Copper-catalyzed, one-pot, three-component synthesis of benzimidazoles by condensation and C-N bond formation.

  Yong Kim, Manian Rajesh Kumar, Namjin Park, Yumi Heo, Sunwoo Lee
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  ABSTRACT: Benzimidazoles were synthesized by the copper-catalyzed, one-pot, three-component reaction of 2-haloanilines, aldehydes, and NaN(3). The reaction was optimized when 2-iodo- or 2-bromoanilines (1.0 equiv), aldehydes (1.2 equiv), NaN(3) (2.0 equiv), 5 mol% of CuCl, and 5 mol % of TMEDA were reacted in DMSO at 120 °C for 12 h. Good yields resulted, and the reaction showed tolerance toward functional groups such as ester, nitro, and chloro. Aliphatic and heteroaromatic aldehydes also afforded the desired products in moderate to good yields.
  The Journal of Organic Chemistry 12/2011; 76(23):9577-83. · 4.45 Impact Factor
• Article: A colorimetric high-throughput screening method for palladium-catalyzed coupling reactions of aryl iodides using a gold nanoparticle-based iodide-selective probe.

  Eunhye Jung, Sudeok Kim, Yong Kim, Seong Hyeok Seo, Soo Suk Lee, Min Su Han, Sunwoo Lee
  Angewandte Chemie International Edition 05/2011; 50(19):4386-9. · 13.45 Impact Factor
• Article: One-pot synthesis of 1,4-diarylsubstituted 1,3-diynes from the sequential coupling reactions of aryl iodides and propiolic acid

  Yong Kim, Ahbyeol Park, Kyungho Park, Sunwoo Lee
  Tetrahedron Letters 01/2011; · 2.68 Impact Factor
• Article: Synthesis of symmetrical diarylalkyne from palladium-catalyzed decarboxylative couplings of propiolic acid and aryl bromides under water

  Kyungho Park, Goun Bae, Ahbyeol Park, Yong Kim, Jaehoon Choe, Kwang Ho Song, Sunwoo Lee
  Tetrahedron Letters 01/2011; · 2.68 Impact Factor
• Article: Pd-catalyzed carbonylative reactions of aryl iodides and alkynyl carboxylic acids via decarboxylative couplings.

  Ahbyeol Park, Kyungho Park, Yong Kim, Sunwoo Lee
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  ABSTRACT: Alkynyl carboxylic acids reacted with aryl iodides under a CO atmosphere in the presence of a palladium catalyst to produce α,β-alkynyl aryl ketones in good yields. The maximum turnover number was 16 800. The desired carbonylative coupling was formed from phenyl propiolic acid without any formation of a noncarbonylative coupling product in the absence of CuI. However, the reaction with alkyl-substituted alkynyl carboxylic acids required CuI as a cocatalyst for high yield.
  Organic Letters 01/2011; 13(5):944-7. · 5.86 Impact Factor