1.1
Reagents:
Thionyl chloride
;
3 h, reflux
1.2
Reagents:
Aluminum chloride
Solvents:
Dichloromethane
;
reflux; 3 h, 0 - 5 °C
1.3
Reagents:
Sodium hydroxide
Solvents:
Ethanol
,
Water
;
overnight, reflux

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