1.1
Reagents:
Potassium
Solvents:
Diethyl ether
,
Ethanol
;
rt → 0 °C; 30 min, 0 °C
1.2
Reagents:
Acetonitrile
Solvents:
Diethyl ether
;
0 °C → rt; 1 h, rt

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