1.1
Reagents:
Sodium borohydride
Solvents:
Methanol
,
Tetrahydrofuran
;
30 min, 0 - 5 °C
1.2
Reagents:
Acetic acid
;
0 - 5 °C; 10 - 15 min, rt
1.3
Reagents:
Sodium hydroxide
Solvents:
Methanol
,
Water
;
8 h, 60 °C
1.4
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 3, rt