Synthesis and Biological Evaluation of the N-Acyl-N′- solanesylpiperazine Derivatives;

N,N-dichloroethyl amine hydrogen chloride salt was reacted with phthalic anhydride, the resulting 2-{\[bis (2-chloroethyl) amino\] carbonyl} benzoic acid was then reacted with solanesylamine or solanesylpiperazine to give the two target compounds in the presence of dicyclohexylcarbodiimide.

Five novel piperazine derivatives,1,4-di(dithiocarbamate acteate)piperazine were synthesized as ashless and non-phosphorus environmentally friendly lubricating oil additives.

Six piperazine derivatives,1,4-di(dithiocarbamate acteate)piperazines,named 2a,2b,2c,2d,2e,2f,were synthesized from the reaction of piperazine with carbon disulfide and chloroacetate,whose structures and thermal stability were determined by 1H NMR,13C NMR,IR,UV-Vis,MS,elemental analysis and thermogravimetric apparatus,respectively.