2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetic Acid → 2-(4-(1-(4-Chlorobenzyl)-1,6-dihydro-6-oxopyridin-3-yl)phenyl)acetic acid

Beteiligte Stoffe

Reaktionsschritte

According to Scheme 3 Method A: The title compound was prepared according to Example 2 Step 2, from 1-(4-chlorobenzyl)-5-bromopyridin-2(1H)-one (1 eq, 0.67 mmol, 0.20 g, Example 2 Step 1) and 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetic acid (1.5 eq, 1.00 mmol, 0.26 g). Reaction conditions: 4.5 hours at 90° C. The reaction mixture was made acidic then extracted with AcOEt. The organic layer washed with brine, dried over Na2SO4, filtered and concentrated. The residue was purified by chromatography over silicagel (AIT Flashsmart prepacked column 25 g SiO2, AcOEt/MeOH 95/5), yielding the title compound (0.24 g, 100%) as a white solid. LC (XTerra RP18, 3.5 μm, 3.0×50 mm Column): RT=3.53 min; MS m/z (CI) [MH]+=354, 356.

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