in various solvent(s) Heating;

1: para-nitro iodo-benzene; 3-hydroxy-3-phenyl-prop-1-yne With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine in tetrahydrofuran Sonogashira coupling; 16 h; Heating; 2: 1,2-diamino-benzene With triethylamine in tetrahydrofuran 24 h; Heating;

[C4Py][HSO4] in ethyl acetate T=80°C; 1.5 h;

aluminum oxide T=80°C; 3 h;

hydrogenchloride in methanol Heating;