319. The reactivity of the alkylthio-group in nitrogen ring compounds. Part I. A general method for the preparation of symmetrical and unsymmetrical thiacyanines
作者:J. D. Kendall、H. G. Suggate
DOI:10.1039/jr9490001503
日期:——
——
作者:O. A. Fedorova、A. V. Koshkin、S. P. Gromov、V. G. Avakyan、V. B. Nazarov、S. B. Brichkin、T. G. Vershinnikova、T. M. Nikolaeva、L. A. Chernych、M. V. Alfimov
DOI:10.1023/a:1020950620582
日期:——
A method for the synthesis of the spirobenzothiazolinonaphthoxazine, stable in the merocyanine form and containing a crown-ether fragment was developed. The complexing properties of the prepared merocyanine compound and the spectroscopic and photochromic characteristics of its complexes with alkaline earth metal cations were studied by NMR and UV spectroscopy. The results were analyzed using quantum-chemical calculations. The addition of alkaline earth metal perchlorates to a solution of a crown ether-containing merocyanine dye in MeCN results in the coordination of metal cations to two binding centers, namely, the crown-ether fragment and the merocyanine oxygen atom. This gives rise to two types of complexes, which differ substantially in their structurally. The complexation. induces changes in the UV spectra and influences on the photochromic behavior of the prepared compound.
Parijs, Recueil des Travaux Chimiques des Pays-Bas, 1930, vol. 49, p. 33,41
作者:Parijs
DOI:——
日期:——
Fries; Wolter, Justus Liebigs Annalen der Chemie, 1937, vol. 527, p. 60,69
作者:Fries、Wolter
DOI:——
日期:——
Reaction of benzothiazole and substituted benzothiazoles with dimethyl acetylenedicarboxylate. A novel heterocyclic ring transformation
作者:Alexander McKillop、Trevor S. B. Sayer、Geoffrey C. A. Bellinger