抄録
S-Esters of β-mercaptothiohydrocinnamic acid were prepared by the addition of hydrogen sulfide to the S-esters of thiocinnamic acid. S-Methyl, -ethyl, -isopropyl, -butyl, -isopentyl, -dodecyl, -phenyl, and-benzyl esters were prepared and their chelating ability with metals was tested. They formed stable chelates with copper and nickel, and the ratio of ligand to the metal was 1 : 1 in copper chelate and 2 : 1 in nickel, chelate. Cobalt chelate was stable only in the organic solvent, with the ratio of 3 : 1. S-Isopentyl β-mercaptothiohydrocinnamate was very sensitive with nickel and recognizable limit of nickel by this compound was 0.05γ/0.05 cc.
