TITLE:
Spontaneous Changes of Solid 5,7-di-tert-butylspiro(2,5)octa-4,7-diene-6-one in Storage Conditions at Room Temperature
AUTHORS:
Alexandre A. Volodkin, Gennady E. Zaikov, Lydia N. Kurkovskaja, Sergey M. Lomakin, Irina M. Levina, Elena V. Koverzanova
KEYWORDS:
Solid-Phase Reactions, 5, 7-Di-tert-butylspiro(2, 5)octa-4, 7-diene-6-one, 2-(3’, 5'-di-tert-butyl-4'-hydroxyphenyl)-ethyloxy-p-cresole, NMR and IR Spectroscopy
JOURNAL NAME:
Advances in Chemical Engineering and Science,
Vol.5 No.3,
June
30,
2015
ABSTRACT: On an example of spontaneous changes 5,7-di-tert-butylspiro (2,5) octa-4,7-diene-6-one at room temperature, a new example of condensations in a solid station is opened. The single crystal of 2-(3’, 5'-di-tert-butyl-4'-hydroxy-phenyl)-ethyloxy-p-cresole is produced as result of a structure transformation 5,7-di-tert-butylspiro (2,5) octa-4,7-diene-6-one in a solid phase at room temperature except a single crystal at transformation 5,7-di-tert-butylspiro (2,5) octa-4,7-diene-6-one a new substance is formed too. Spectrums 1Н and 13С NMR differ from similar spectrums of initial compound and the single crystal. New substance represents an admixture of isomeric compounds, capable reversible to be transformed in initial 5,7-di-tert-butylspiro(2,5) octa-4,7-diene-6-one and 2-(3’, 5'-di-tert-butyl-4'-hydroxyphenyl)-ethyloxy-p-cresole.