1: 3-iodopyridine N-oxide With isopropylmagnesium chloride lithium chloride complex in tetrahydrofuran T=-40°C; Inert atmosphere; 2: benzaldehyde in tetrahydrofuran T=-40°C; Inert atmosphere; 3: With water; ammonium chloride in tetrahydrofuran

water T=30°C; 86 h; baker's yeast;