反应条件
1: 2,6-Dibromopyridine With n-butyllithium in tetrahydrofuran; diethyl ether; hexane T=-78°C; 0.0833333 h; 2: N,N-dimethyl-formamide in tetrahydrofuran; diethyl ether; hexane T=-78 - -50°C; 0.166667 h; 3: With sodium tetrahydroborate in tetrahydrofuran; methanol; diethyl ether; hexane T=20°C;
