114892-89-6Relevant articles and documents
CHEMISTRY OF ENOL ETHER. LXXXI. SYNTHESIS AND INVESTIGATION OF TETRACARBOCYANINE DYES CONTAINING CYCLIC FRAGMENTS IN THE POLYMETHINE CHAIN
Makin, S. M.,Boiko, T. N.,Pomagaev, A. I.
, p. 362 - 366 (2007/10/02)
1,1,5,7-Tetraethoxy-2,4-polymethylene-2,6-heptadienes were synthesized by the reaction of β-ethoxyacrolein diethyl acetate with cyclic 1-ethoxy-1,3-dienes.Treatment of the product with aniline in hydrochloric acid gave the corresponding heptamethine salts