Collect. Czech. Chem. Commun. 1985, 50, 1300-1304

Synthesis of polyenylidenemalonaldehydes

Ludmila A. Yanovskayaa, Galya V. Kryshtala, Dalimil Dvořákb, Vladimír Králb and Zdeněk Arnoldb

a Zelinski Institute of Organic Chemistry, Academy of Sciences of USSR, Moscow, U.S.S.R.
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6, Czechoslovakia


Condensation of polyenals I, where substituents R1 and R2 are CH3, H, C2H5OCO, Cl or CN, with 1,3-bis(dimethylamino)trimethinium perchlorate (II), followed by hydrolysis of the intermediate III, afforded polyenylidenemalonaldehydes IV. Properties and spatial arrangement of these products are briefly discussed.