[C:1]1([C:7]2[CH:8]=[C:9]([CH:14]=[CH:15][N:16]=2)[C:10]([O:12]C)=[O:11])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[OH-].[Li+:18]>C1COCC1>[C:1]1([C:7]2[CH:8]=[C:9]([CH:14]=[CH:15][N:16]=2)[C:10]([O-:12])=[O:11])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1.[Li+:18]Preparation H1, Step 4: A solution of methyl 2-phenylisonicotinate, N-oxide (397 mg, 1.73 mmol) in THF (6 mL) was treated with 0.5 N aqueous lithium hydroxide (3.65 mL, 1.81 mmol), and the mixture was stirred overnight. The THF was stripped, and the aqueous solution was freeze dried to yield lithium 2-phenylisonicotinate, N-oxide a colorless glass, which was used as-is in the next step.
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