(acetylacetonato)bis(2-phenylpyridinato)rhodium(III) | 439801-48-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (acetylacetonato)bis(2-phenylpyridinato)rhodium(III)
• CAS: 439801-48-6
• 化学式: C₂₇H₂₃N₂O₂Rh
• 分子量: 510.397
• InChiKey: YTCOPMAGNGTDPI-UHFFFAOYSA-N

计算性质

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反应信息

• 作为产物：
  描述：

  2-苯基吡啶 、 cyclooctane,(Z)-4-hydroxypent-3-en-2-one,rhodium 以 甲苯 为溶剂， 以86%的产率得到(acetylacetonato)bis(2-phenylpyridinato)rhodium(III)
  参考文献：
  名称：

  Efficient synthesis of the cyclometalated complex fac-[Rh(ppy)3] (ppy=2-phenylpyridinato)

  摘要：

  A new convenient high-yield synthesis of the tris-cyclometalated complexes fac-[Rh(ppy)(3)] (4; ppy = 2-phenylpyridinato) was developed. Complex 4 was prepared in a kind of one-pot synthesis starting from in situ prepared [Rh(acac)(coe)(2)] (2) which was heated in refluxing 2-phenylpyridine for a short time. After purification by filtration over alumina, compound 4 was obtained in yields of 65%. Also [Rh(a-cac)(ppy)(2)] (3) was prepared in a similar manner by oxidative addition of Hppy in refluxing toluene in high yields. In contrast to previous findings with the analogous iridium compounds, there was not any hint at the formation of the isomer mer-[Rh(ppy)(3)] using similar reaction conditions as applied for iridium. Furthermore the compound [{Rh(mu-Cl)(ppy)(2)}(2)] (5) was prepared from [{Rh(mu-Cl)(coe)(2)}(2)] (1) and Hppy in refluxing toluene in nearly quantitative yield. (C) 2011 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.ica.2011.01.041

文献信息

• Direct Synthesis of Styrene by Rhodium-Catalyzed Oxidative Arylation of Ethylene with Benzene
  作者：Takaya Matsumoto、Roy A. Periana、Douglas J. Taube、Hajime Yoshida

  DOI：10.1006/jcat.2001.3471

  日期：2002.3

  Various rhodium complexes were examined for oxidative arylation of ethylene with benzene to directly produce styrene. Using Rh(ppy)2(OAc) (1) (ppyH=2-phenylpyridine), the reaction of benzene with ethylene gives styrene and vinyl acetate in 77 and 23% selectivities, respectively, in contrast to the selectivities using Pd(OAc)2, which are 47% styrene and 53% vinyl acetate. The observation that complex 1 is

  考察了各种铑配合物对乙烯与苯的氧化芳基化作用，以直接生产苯乙烯。与使用Pd（OAc）的选择性相反，使用Rh（ppy）2（OAc）（1）（ppyH = 2-苯基吡啶），苯与乙烯的反应分别得到的苯乙烯和乙酸乙烯酯的选择性为77％和23％。2，它们是47％的苯乙烯和53％的乙酸乙烯酯。观察到，络合物1是用于苯乙烯形成以及CH 3 CO 2 D和C 6 H 6之间的H–D交换的活性催化剂，这表明苯乙烯的形成涉及Rh介导的苯CH键活化过程。配合物1的晶体结构还报道了Rh（ppy）2（acac–O，O'）（2）（acac =乙酰基丙酮酸）。Rh（acac）（CO）2还可以通过添加acacH和O 2而不含任何氧化剂（例如铜盐）来充当苯乙烯形成催化剂。在该体系中，尽管存在乙酸，也根本不形成乙酸乙烯酯。