1.1
Reagents:
Potassium carbonate
Solvents:
1,4-Dioxane
,
Water
;
0 °C; 0 °C → rt; 10 h, rt
1.2
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 2, 0 °C
1.3
Reagents:
Triethylamine
,
Ethyl chloroformate
Solvents:
Tetrahydrofuran
;
-15 °C; 1 h, -15 °C
1.4
Reagents:
Ammonia
Solvents:
Water
;
-15 °C; -15 °C → rt; 10 h, rt; rt → 60 °C; 1 h, 60 °C

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