1: With sodium tetrahydroborate; methanesulfonic acid in dimethyl-ether; isopropyl alcohol T=0 - 10°C; 12.5 h; 2: With triethanolamine in dimethyl-ether; isobutyramide; isopropyl alcohol T=0 - 20°C; 2.91667 h; 3: With water in dimethyl-ether; isobutyramide; isopropyl alcohol T=10 - 20°C;