Synthesis and spectroscopic study of hexadecaalkyl-substituted rare-earth diphthalocyanines
摘要:
New hexadecaalkyl-substituted diphthalocyanine complexes of lanthanides (R)Pc(2)Ln (R = Et, or Bu; Ln = Lu, Dy, or Eu) were synthesized by three methods: in solution in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene, in a melt of a mixture of the reagents, and under microwave irradiation. The first of the above-mentioned procedures has an advantage for the preparation of Dy and Eu diphthalocyanines, whereas the melt synthesis is a method of choice for the preparation of Lu complexes. The reaction time decreases in going from the first to the third method. The structures of the complexes were confirmed by mass spectrometry, NMR spectroscopy, and electronic absorption spectroscopy.
Highly substituted Schiff base macrocycles via hexasubstituted benzene: a convenient double Duff formylation of catechol derivatives
作者:Kevin E. Shopsowitz、David Edwards、Amanda J. Gallant、Mark J. MacLachlan
DOI:10.1016/j.tet.2009.07.094
日期:2009.9
The synthesis of soluble, shape-persistent macrocycles is important for developing new materials. Double Duff formylation of 4,5-dialkylcatechol derivatives yields 3,6-diformyl-4,5-dialkylcatechols in moderate yields. These hexasubstituted aromatics are useful precursors to highly substituted Schiff base macrocycles. We illustrate convenient routes to these compounds as well as structural studies of two new macrocycles with alkyl substituents. (C) 2009 Elsevier Ltd. All rights reserved.
The first example of a carbon label for interpreting the 13C NMR spectra of phthalocyanine metal complexes
作者:Victor E. Pushkarev、Evgenii V. Shulishov、Yury V. Tomilov、Larisa G. Tomilova
DOI:10.1016/j.mencom.2007.06.011
日期:2007.7
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