1.1
Reagents:
Sodium borohydride
Solvents:
Methanol
;
30 min, cooled; 30 min, cooled
1.2
Reagents:
Hydrochloric acid
Solvents:
Water
;
acidified
1.3
Solvents:
1,4-Dioxane
;
72 h, reflux
1.4
Reagents:
Oxygen
Solvents:
Ethanol
;
48 h, rt

