1H-imidazole; 4-(N,N-dimethlyamino)pyridine in dichloromethane T=20°C; 0.5 h; Title compound not separated from byproducts;

1: (2R,3R,4R)-5-(benzyloxy)-2,4-dimethyl-1,3-pentanediol; tert-butylchlorodiphenylsilane With 1H-imidazole; 4-(N,N-dimethlyamino)pyridine in dichloromethane T=20°C; 0.5 h; 2: methyl iodide With tetra-(n-butyl)ammonium iodide; sodium hydride in tetrahydrofuran T=60°C; 16 h; Title compound not separated from byproducts;