solution of NH 4 Cl (500 mL) was added dropwise through the dropping funnel. The mixture was extracted with cyclohexane (3 x 300 mL). The combined organic layers were dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was dried while stirring under high vacuum for 3 h to remove parts of the excess benzaldehyde. The crude product was purified by column chromatography (SiO 2 , EtOAc:pentane/1:9). After purification, remaining traces of benzaldehyde were removed by stirring under high vacuum at 40 °C over night to afford cinnamoyl phloroglucinol 6 (20.9 g, 48.2 mmol, 94%) as an orange, viscous oil.