For the first time 1,3-dinitro-1,2,4,4-tetrachloro-1,3-butadiene has b
een obtained by nitration of available 1,1,3,4-tetrachloro-1,3-butadie
ne with mixture of HNO3 and H3PO4 (10 : 1). The interaction of dinitro
diene with some nucleophiles has been studied. Peculiarities of the ch
emical behaviour of alpha-nitro-beta,beta-dichlorovinylic and beta-nit
ro-alpha,beta-dichlorovinylic groups have been revealed in S(N)Vin pro
cesses.