Acetophenone → Cinnamoylbenzene

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Reaction of Aldehydes with Wang Resin-bound Acetophenones: Each packet of Acetophenone-Wang resin was transferred to a 250 mL PP bottle, to which a solution of NaOMe (51.2 mmol, 20 eq, 0.25 M) in 50% THF-MeOH (205 mL) and an aldehyde (51.2 mmol, 20 eq, 0.25 M) were added sequentially. After shaking at room temperature for 3 days, the packet was washed several times with MeOH (3×80 mL) and alternatively with DMF (80 mL) and MeOH (80 mL) for 3 cycles, followed by washes of DCM (2×80 mL) and MeOH (3×80 mL). The packet was air-dried overnight to afford a resin-bound Chalcone, that varied in color from yellow to dark red depending on the aldehyde used.

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