1-(4-Chlorobenzyl)-6-oxo-1,6-dihydropyridine-3-carbaldehyde → 1-(4-chlorobenzyl)-5-(hydroxy(3-methoxyphenyl)methyl)pyridin-2(1H)-one

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Reaction Steps

According to Scheme 7 Method B: A solution of 3-methoxybenzylmagnesium bromide (1.2 eq, 1.00 mmol, 1.00 mL) was added dropwise to a solution of 1-(4-chlorobenzyl)-1,6-dihydro-6-oxopyridine-3-carbaldehyde (1 eq, 1.21 mmol, 0.30 g, Example 10 Step 1) in THF (15 mL) at −78° C. under a nitrogen atmosphere. The reaction mixture was stirred for 14 hours at room temperature. The resulting mixture was poured onto ice and extracted with CH2Cl2. The organic layer was dried over MgSO4, filtered and evaporated. Purification by flash chromatography (AIT Flashsmart prepacked column 25 g SiO2, CH2Cl2/AcOEt 80/20 to 70/30) afford 1-(4-chlorobenzyl)-5-(hydroxy(3-methoxyphenyl)methyl)pyridin-2(1H)-one (0.64 mmol, 0.28 g, 64%) as a yellow semi-solid.

Provenance & Evidence