C([Li])CCC.Br[C:7]1[CH:12]=[CH:11][CH:10]=[C:9]([Br:13])[N:8]=1.C(N(CC1C=CC=CC=1)[C:17](=[O:22])[CH2:18][O:19][CH2:20][CH3:21])C.[BH4-].[Na+]>C1COCC1>[Br:13][C:9]1[N:8]=[C:7]([CH:17]([OH:22])[CH2:18][O:19][CH2:20][CH3:21])[CH:12]=[CH:11][CH:10]=1
To a solution of n-butyllithium (1.6M in hexanes, 4.19 mL, 6.70 mmol) in anhydrous THF (4.0 mL) under nitrogen at −78° C. was added a solution of 2,6-dibromopyridine (1.59 g, 6.71 mmol) in anhydrous THF (9.5 mL) drop-wise over 1 h. The resulting dark green solution was stirred at −78° C. for 15 min and then treated with N-ethyl-2-(ethyloxy)-N-(phenylmethyl)acetamide (1.93 g, 8.70 mmol), washing in with anhydrous THF (1.0 mL). The resulting green solution was stirred at −78° C. for 15 min and was then treated with a solution of AcOH (0.42 mL) in MeOH (7.00 mL) to give a orange solution which was then treated with NaBH4 (0.38 g, 10.04 mmol). This mixture was removed from the cooling bath and allowed to warm to room temperature over 2 h. The mixture was then treated with saturated aqueous. NH4Cl (50 mL) and the products extracted with EtOAc (2×50 mL). The combined organic layer was then washed with brine (100 mL), dried (MgSO4) and the reduced in vacuo to give a yellow oil. Purification by SPE (silica, 20 g cartridge) eluting with cyclohexane:EtOAc (gradient 50:1 to 1:1) afforded the title compound as a white solid (612 mg).
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