ISSN:
1573-9171
Keywords:
synthesis
;
crystal structure
;
UV spectra
;
2,6-di-tert-butyl-4-[α-(2-hydroxy-1-naphthyl)methyl]phenol
;
2,6-di-tert-butyl-4-[α-morpholino-α-(2-hydroxy-6-bromo-1-naphthyl)methyl]phenol
;
2,6-di-tert-butyl-4-α-(2-hydroxy-1-naphthyl)-1,4-methylenequinone
;
2,6-di-tert-butyl-4-α-(2-acetyloxy-1-naphthyl)-1,4-methylenequinone
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Mannich bases exhibiting photo- and thermochromic properties in solutions were synthesized from 3,5-di-tert-butyl-4-hydroxybenzaldehyde and 2-naphthols. An investigation of an acetyl derivative of methylenequinone, modeling a product of photo- and thermochromic transformations, proved that the color change of solutions of the Mannich bases is due to reversible dissociation into colored methylenequinones and morpholine. On the basis of data of x-ray diffraction analysis of one of the Mannich bases, characteristics of their molecular structure were determined, and reasons were stated for their effect on the dissociation mechanism.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00863826