1.1
Reagents:
Sodium hydroxide
Solvents:
Toluene
,
Water
;
pH 9, 10 - 15 °C
1.2
Reagents:
Sodium methoxide
Solvents:
Toluene
;
3 h, reflux; reflux → 55 °C; 55 - 60 °C
1.3
1 h, 50 - 55 °C; 1 h, 55 - 60 °C
1.4
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 4.0 - 4.5, 0 - 10 °C
2.1
Reagents:
Sodium hydroxide
Solvents:
Water
;
3 h, reflux
2.2
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 9.5 - 11.5, 5 - 10 °C
2.3
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 3.5 - 4.5, 5 - 10 °C
2.4
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 1.3 - 1.6, 5 - 10 °C