Update: An Efficient Synthesis of Poly(ethylene glycol)‐Supported Iron(II) Porphyrin Using a Click Reaction and its Application for the Catalytic Olefination of Aldehydes
説明
<jats:title>Abstract</jats:title><jats:p>The facile synthesis of polyethylene glycol (PEG)‐immobilized iron(II) porphyrin using a copper‐catalyzed azide‐alkyne [3+2] cycloaddition “click” reaction is reported. The prepared complex <jats:bold>5</jats:bold> (PEG‐C<jats:sub>51</jats:sub>H<jats:sub>39</jats:sub>FeN<jats:sub>7</jats:sub>O) was found to be an efficient catalyst for the selective olefination of aldehydes with ethyl diazoacetate in the presence of triphenylphosphine, and afforded excellent olefin yields with high (<jats:italic>E</jats:italic>) selectivities. The PEG‐supported catalyst <jats:bold>5</jats:bold> was readily recovered by precipitation and filtration, and was recycled through ten runs without significant activity loss.</jats:p>
収録刊行物
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- Advanced Synthesis & Catalysis
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Advanced Synthesis & Catalysis 354 (9), 1827-1831, 2012-05-09
Wiley