Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Reaction of 2,2'-Biphenoxyborane in Tetrahydrofuran with Selected Organic Compounds Containing Representative Functional Groups

  • Cha, Jin-Soon (Department of Chemistry, Yeungnam University) ;
  • Kim, Jong-Mi (Department of Chemistry, Yeungnam University) ;
  • Lee, Ja-Cheol (Department of Chemistry, Yeungnam University) ;
  • Lee, Hyung-Soo (Department of Chemistry Education, Hyosung Women's University)
  • Published : 1991.12.20
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Abstract

The approximate rates and stoichiometry of the reaction of excess 1,3,2-biphenyldioxaborepin [2,2'-biphenoxyborane (BPB)] with selected organic compounds containing representative functional groups under the standardized conditions (tetrahydrofuran, hydride to compound being 4 : 1, room temperature) was examined in order to define the characteristics of the reagent for selective reductions and compare its reducing power with those of other substituted boranes. The results indicate that BPB is unique and the reducing power is much stronger than that of other dialkoxyboranes, such as catecholborane and di-s-butoxyborane. BPB reduces aldehydes, ketones, quinones, lactones, tertiary amides, and sulfoxides readily. Carboxylic acids, anhydrides, esters, and nitriles are also reduced slowly. However, the reactions of acid chlorides, epoxides, primary amides, nitro compounds, and disulfides with this reagent proceed only sluggishly.

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  1. ChemInform Abstract: Reaction of 2,2′-Biphenoxyborane in Tetrahydrofuran with Selected Organic Compounds Containing Representative Functional Groups. vol.23, pp.22, 1992, https://doi.org/10.1002/chin.199222095
  2. Thirty Six Years of Research on the Selective Reduction and Hydroboration vol.32, pp.6, 1991, https://doi.org/10.5012/bkcs.2011.32.6.1808