Journal
ORGANOMETALLICS
Volume 27, Issue 20, Pages 5173-5176Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om800606c
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- National Science Council of the Republic of China
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A method for stoichiometric C-H activation of 3,5-diphenylisoxazole (1) using Pd(OAc)(2) as a reagent in acetic acid leading to the isoxazole palladacycle I was described. Ortho aryl- and alkyl-substituted 3,5-diphenylisoxazoles 3a-f and 5a-i were synthesized by the reaction of I with various boronic acids 2a-f and 4a-i, respectively. p-Benzoquinone was found to be the best oxidant and 1,4-dioxane the best solvent for the transmetalation-reductive-elimination step of I with boronic acids.
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