4.7 Article

Palladium-Catalyzed Selective Mono-/Tetraacetoxylation of o-Carboranes with Acetic Acid via Cross Dehydrogenative Coupling of Cage B-H/O-H Bonds

Journal

INORGANIC CHEMISTRY
Volume 57, Issue 5, Pages 2925-2932

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.8b00038

Keywords

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Funding

  1. Sichuan Provincial Education Department [16ZB0133]
  2. Longshan academic talent research supporting program of SWUST [17LZX324]
  3. Sichuan Provincial Science and Technology Department [2016TD0014]
  4. NSFC [21602182]

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A selective mono-/tetraacetoxylation of o-carboranes with acetic acid via cross dehydrogenative coupling of cage B-H/O-H bonds has been developed, and a series of mono- and tetraacetoxylated o-carboranes have been synthesized with moderate to good yields as well as good selectivity. Mechanistic studies indicate that the acetoxyl originates from acetic acid directly, and a nucleophilic addition of Pd-IV-oxo species and dehydration process is proposed.

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