1,2,2,2-Tetrachloroethyl carbamates 3 were prepared by the reaction of 1,1,2,2-tetrachloroethyl carbonochloridate with amines. Carbamates 3 were then nitrosated and reacted with amines to yield N-nitrosoureas.
)‐N'‐nitrosocarbamoyl]aminoacidamides and esters as potential antineoplastic substances are reported. N‐[N'‐(2‐chloroethyl)‐N'‐nitrosocarbamoyl]aminoacids (with the exception of the glycine derivative) were prepared by reaction of 2‐chloroethyl isocyanate with the sodium salt of an aminoacid in a heterogenous medium followed by nitrosation with sodium nitrite under acidic conditions. Condensation