Chromogenic proton-dissociable azocrown ether reagents for lithium ions. Skwierawska, A., Inerowicz, H. D., & Biernat, J. F. Tetrahedron Letters, 39(19):3057--3060, 1998.
Chromogenic proton-dissociable azocrown ether reagents for lithium ions [link]Paper  doi  abstract   bibtex   
Synthesis of new proton-dissociable chromogenic azocrown ethers bearing phenol and two azo groups as parts of macrocycle has been developed. Color reactions of the modified crown ethers with metal cations are described. High selectivity of lithium complex formation was found by spectrophotometry. (C) 1998 Elsevier Science Ltd. All rights reserved.
@article{ skwierawska_chromogenic_1998,
  title = {Chromogenic proton-dissociable azocrown ether reagents for lithium ions},
  volume = {39},
  issn = {0040-4039},
  url = {http://dx.doi.org/10.1016/s0040-4039(98)00357-8},
  doi = {<Go to ISI>://WOS:000073235800052},
  abstract = {Synthesis of new proton-dissociable chromogenic azocrown ethers bearing phenol and two azo groups as parts of macrocycle has been developed. Color reactions of the modified crown ethers with metal cations are described. High selectivity of lithium complex formation was found by spectrophotometry. (C) 1998 Elsevier Science Ltd. All rights reserved.},
  number = {19},
  journal = {Tetrahedron Letters},
  author = {Skwierawska, A. and Inerowicz, H. D. and Biernat, J. F.},
  year = {1998},
  pages = {3057--3060}
}

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