1: With borane-THF in tetrahydrofuran 16 h; Heating / reflux; 2: With sodium hydroxide in water 1 h;

1: With sodium tetrahydroborate; iodine in tetrahydrofuran T=-10 - 70°C; 4 h; 2: With methanol in tetrahydrofuran T=0 - 65°C; 0.5 h; Product distribution / selectivity;

Stage #1: With  dimethylsulfide borane complex in  tetrahydrofuran 6 h;  Heating / reflux; Stage #2: With  methanol in  tetrahydrofuran 2 h;  Heating / reflux; Stage #3: With  hydrogenchloride in  water T=0°C;  Product distribution / selectivity;  Show Experimental Procedure