Abstract The reaction of dithiocarbamate salts with α‐haloketones is extended to (i) dithiocarbamate salts with bis(α‐haloketones), (ii) bis(dithiocarbamate salts) with α‐haloketones, and (iii) bis(dithiocarbamate salts) with bis(α‐haloketones). Both (i) and (ii) give bis([3H]‐thiazole‐2thiazole‐2‐thiones) in high yields, and (iii) gives the corresponding polymers which are described and characterized.