1: 1-hydroxybut-2-yne With sodium hydride in tetrahydrofuran T=0 - 20°C; 2: allyl bromide in tetrahydrofuran T=20°C; 2 h;

1: 1-hydroxybut-2-yne With sodium hydride in N,N-dimethyl-formamide T=0°C; 2 h; Inert atmosphere; 2: allyl halide in N,N-dimethyl-formamide T=0 - 20°C; Inert atmosphere;