potassium carbonate in CS2; water; N,N-dimethyl-formamide

1: 3-lt;di(methylthio)methylenegt;pentan-2,4-dione With sodium sulfide in N,N-dimethyl-formamide T=50°C; 1 h; 2: chloroacetonitrile With potassium carbonate in N,N-dimethyl-formamide T=50°C; 6 h;