[(2,6-dimethyl-3,4-dihydronaphtho[2',1':3,4]pyrylium)Cr(CO)3](PF6) | 154090-02-5

• 英文名称: [(2,6-dimethyl-3,4-dihydronaphtho[2',1':3,4]pyrylium)Cr(CO)3](PF6)
• CAS: 154090-02-5
• 化学式: C₁₈H₁₅CrO₄*F₆P
• 分子量: 492.275
• InChiKey: GHSIXKDOZJIWMD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为反应物：
  描述：

  [(2,6-dimethyl-3,4-dihydronaphtho[2',1':3,4]pyrylium)Cr(CO)3](PF6) 、 水 在 K₂CO₃ 、 KO(t)Bu 作用下， 以 丙酮 为溶剂， 以59%的产率得到
  参考文献：
  名称：

  吡啶-γ-benchrotréniques合成的高级合成油

  摘要：

  Diacetylation of benehrotrenic alkenes by acetic anhydride and weak Lewis acid (ZnCl(2), BF(3)-OEt(2)) is reported. A series of gamma-benchrotrenic pyrylium salts is obtained together with the mono and the diacetylated products. The first organometallic fused rings pyrylium sails are obtained. In connection with the electron donating effect of the Cr (CO)(3) group, the influence of rings deconjugation on NMR data is discussed. Finally the reaction of acyclic and cyclic gamma-benchrotrenic pyrylium salts with nucleophiles is described. (C) 1997 Elsevier Science S.A.

  DOI：

  10.1016/s0022-328x(97)00369-0
• 作为产物：
  描述：

  ammonium hexafluorophosphate 、 tricarbonyl(1-methyl-3,4-dihydronaphthalene)chromium 、 乙酸酐 在 BF₃*Et₂O 作用下， 以 乙酸酐 为溶剂， 以75%的产率得到[(2,6-dimethyl-3,4-dihydronaphtho[2',1':3,4]pyrylium)Cr(CO)3](PF6)
  参考文献：
  名称：

  吡啶-γ-benchrotréniques合成的高级合成油

  摘要：

  Diacetylation of benehrotrenic alkenes by acetic anhydride and weak Lewis acid (ZnCl(2), BF(3)-OEt(2)) is reported. A series of gamma-benchrotrenic pyrylium salts is obtained together with the mono and the diacetylated products. The first organometallic fused rings pyrylium sails are obtained. In connection with the electron donating effect of the Cr (CO)(3) group, the influence of rings deconjugation on NMR data is discussed. Finally the reaction of acyclic and cyclic gamma-benchrotrenic pyrylium salts with nucleophiles is described. (C) 1997 Elsevier Science S.A.

  DOI：

  10.1016/s0022-328x(97)00369-0

文献信息

• Organometallics as Potential Protein Labels: Pyrylium and Pyridinium Salts Bearing (C6H5)Cr(CO)3, (C5H4)Mn(CO)3, and Ferrocenyl Substituents
  作者：Krisztina L. Malisza、Siden Top、Jacqueline Vaissermann、Bertrand Caro、Marie-Claude Senechal-Tocquer、Denis Senechal、Jean-Yves Saillard、Smaiel Triki、Samia Kahlal

  DOI：10.1021/om00011a051

  日期：1995.11

  A series of 2,6-dimethyl- or 2,6-diphenylpyrylium cations, [R'-C(5)H(2)R ''O-2](+), which bear organometallic substituents at the 4-position, have been synthesized. The molecules in which R' = (C6H5)Cr(CO)(3), R '' = Me, 1, R' = (C5H4)Mn(CO)(3), R '' = Ph, 8, R' = (C5H4)Fe(C5H5), R '' = Me, 9, and R' = (C5H4)Re(CO)(3), R '' = Ph, 10, have been identified spectroscopically, and the complexes 1 and 8 have also been characterized by X-ray crystallography as CrC16H13O4+ PF6- and MnC25H16O4+ BF4-, respectively. The pi-complexed ring bearing either a Cr(CO)(3) or a Mn(CO)(3) moiety is almost coplanar with the pyrylium ring, as are the phenyl rings in 8. The structural and spectroscopic data indicate that the delocalization of the positive charge on the pyrylium ring onto the metal is rather minimal. These pyrylium salts react readily with benzylamine, or with beta-alanine ethyl ester, to form the corresponding pyridinium salts. In particular, the ferrocenyl derivative, 9, yields a crystalline pyridinium salt, 15, with the ethyl ester of beta-alanine.