p. 2219 - 2222
(1982)(Z)-1-acetoxy-2-methyl-4-chloro-but-2-ene
(Z)-1-acetoxy-2-methyl-4-(N,N-di-n-butylamino)-but-2-ene
(Z)-4-(3-carbethoxy-but-2-enyl)-1,2-diphenyl-3,5-pyrazolidinedione
(Z)-4-(3-acetoxymethyl-but-2-enyl)-1,2-diphenyl-3,5-pyrazolidinedione
sodium salt of 1,2-diphenyl-3,5-dioxopyrazolidine