1.1
Solvents:
Tetrahydrofuran
;
< 25 °C; 1 h, < 25 °C
1.2
Reagents:
Acetic acid
Solvents:
Water
;
cooled; 30 min, cooled
1.3
Reagents:
Ammonia
Solvents:
Water
;
10 min

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