3,11-dibromoseselin | 1245819-47-9

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 3,11-dibromoseselin
• CAS: 1245819-47-9
• 化学式: C₁₄H₁₀Br₂O₃
• 分子量: 386.04
• InChiKey: LPENJHSTZCAJBZ-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  5-(4′,4′,5′,5′-tetramethyl-[1′,3′,2′] dioxaborolan-2′-yl)-10,20-di(1″-tert-butoxycarbonyl-amino-2″-phenylethyl)-(S)-porphinatozinc(II) 、 3,11-dibromoseselin 在 Cs₂CO₃ 、 triphenylphosphine 作用下， 以 dimethylformamide 、 toluene 为溶剂， 以50%的产率得到3,11-bis(10',20'-di((R)-1''-tert-butoxycarbonylamino-2''-phenylethyl)porphyrinatozinc(II)5'-yl)seselin
  参考文献：
  名称：

  Spectroscopic and theoretical insights on supramolecular complexation of C60 and C70 with a designed bisporphyrin

  摘要：

  The present paper reports the synthesis of a designed bisporphyrin (1), and its supramolecular complexes with C-60 and C-70 in toluene medium. Ground state non-covalent interaction between fullerenes and 1 is evidenced from absorption spectrophotometric study in which it is observed that the intensity of the Soret absorption band of 1 decreases considerably in presence of both C-60 and Cm. Jobs plot of continuous variation method establishes 1:1 stoichiometry for fullerene/1 complexes. Steady state fluorescence studies reveal efficient quenching of fluorescence of 1 in presence of fullerenes. The Stern-Volmer diffusion constant for the supramolecular complexes of 1 with C-60 and C-70 is determined to be 1450 and 12,485 dm(3) mol(-1). The binding constants of the C-60/1 and C-70/1 complexes are estimated to be 12,500 and 17,200 dm(3) mol(-1), respectively. Time-resolved emission studies establish relatively long-lived charge separated state for the C-70/1 complex. Transient absorption spectral analysis reveals formation of radical anion species, i.e., C-60(center dot-) and C-70(center dot-) Molecular mechanics calculations at force field model in vacuo evoke the stereoscopic structures of the fullerene/1 complexes and interpret the stability difference between C-60 and C-70 complexes of 1 in terms of heat of formation values. (c) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.saa.2010.04.025