A palladium catalyst supported on a commercial synthetic adsorbent, DIAION HP20, could be employed for the crosscoupling reactions of aryl halides with organoboronic acids (SuzukiMiyaura reaction), alkenes (MizorokiHeck reaction), and alkynes (Sonogashira reaction) in a ligand-free manner. 10?% Pd/HP20 was highly active as the catalyst at approximately the same level as 10?% palladium on carbon (10?% Pd/C) for many of the reactions, and was especially effective for the SuzukiMiyaura reaction using bromoaniline derivatives without the N-protection and Sonogashira reaction of the heteroaryl iodides. As a stable supply and certain quality of HP20 are available as an industrial product, 10?% Pd/HP20 would be in practical use for a variety of cross-coupling reactions and hydrogenation as the substitute for 10?% Pd/C, which is dependent on charcoal as a natural product.
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Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USAUniv Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USA
Milligan, John A.
Phelan, James P.
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Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USAUniv Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USA
Phelan, James P.
Badir, Shorouk O.
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Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USAUniv Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USA
Badir, Shorouk O.
Molander, Gary A.
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Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USAUniv Penn, Dept Chem, Roy & Diana Vagelos Labs, 231 S 34th St, Philadelphia, PA 19104 USA