1.1
Reagents:
Triethylamine
,
Hydrazine hydrate (1:1)
Solvents:
Ethanol
;
18 h, rt → 50 °C; cooled
1.2
Reagents:
Triethylamine
,
Iodine
Solvents:
Tetrahydrofuran
;
0 °C; 1 h, rt
1.3
Reagents:
Sodium bicarbonate
,
Sodium thiosulfate
Solvents:
Water
;
rt

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