copper(l) iodide; triethylamine in N,N-dimethyl acetamide T=110°C; 4 h;

1: 1-phenylimino-1-phenyl-2-butyne With copper(l) iodide in N,N-dimethyl acetamide T=20°C; 0.166667 h; 2: Decanaldehyde With triethylamine in N,N-dimethyl acetamide T=110°C; 10 h; Further stages.;