Platinum-Catalyzed Wacker Oxidation of Alkenes Utilizing cis-Pt(Cl)2(TPPTS)2 (TPPTS = P(m-C6H4SO3Na)3)

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• 作者：Derrik S. Helfer and Jim D. Atwood
• 刊名：Organometallics
• 出版年：2004
• 出版时间：May 10, 2004
• 年：2004
• 卷：23
• 期：10
• 页码：2412 - 2420
• 全文大小：122K
• 年卷期：v.23,no.10(May 10, 2004)
• ISSN：1520-6041

文摘

Reactions of alkenes (ethylene, propene, and 1-hexene) with water in the presence of cis-Pt(Cl)₂(TPPTS)₂ (TPPTS = P(m-C₆H₄SO₃Na)₃) produces stoichiometrically the Wackeroxidation product (acetaldehyde, acetone, and 2-hexanone, respectively) and trans-Pt(Cl)(H)(TPPTS)₂. The presence of the phosphine ligands provides stability to the hydride complexsuch that decomposition to the metal is prevented. For C₂H₄ the final product is trans-Pt(Cl)(C₂H₅)(TPPTS)₂. These reactions are fully consistent with the PdCl₄^2- oxidation of alkenes.At higher temperatures, however, C₂H₄ is catalytically oxidized to CH₃CHO in a mechanismthat appears to be different. At 95 s/entities/deg.gif">C, 90 turnovers are observed.