1.1
Reagents:
Thionyl chloride
Solvents:
Chloroform
;
cooled; 2 h, reflux
1.2
Reagents:
Sodium carbonate
Solvents:
Water
;
basified
2.1
Solvents:
Acetonitrile
;
6 h, reflux; cooled
2.2
Reagents:
Sulfuric acid
Solvents:
Water
;
35 °C; 6 h, 35 °C
2.3
Reagents:
Sodium hydroxide
Solvents:
Water
;
pH 2, cooled; pH 8.5
2.4
Reagents:
Water
Solvents:
Ethanol
;
reflux; 0.5 h, reflux