1: 1-methyl-1H-pyrazole With n-butyllithium in tetrahydrofuran T=0 - 20°C; 1 h; 2: 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane in tetrahydrofuran T=-78 - 0°C; 1.25 h;