1.1
Reagents:
Tripotassium phosphate
Catalysts:
Tetrakis(triphenylphosphine)palladium
Solvents:
1,4-Dioxane
;
rt → 80 °C; 3 d, 80 °C
1.2
Reagents:
Sodium hydroxide
Solvents:
Water
;
reflux
1.3
Reagents:
Hydrochloric acid
Solvents:
Water
;
acidified