Veratrole → (2,3-Dimethoxyphenyl)(4-pyridinyl)methanol

Beteiligte Stoffe

Reaktionsschritte

In a 2 L flask, 72 g of veratrole was dissolved in 300 g of toluene and 155.3 g of butyl lithium in toluene were added at temperatures from −10° C. to over 30° C. The mixture was stirred from 1-4 hours at ambient temperature. Then 40 g of 4-pyridinecarboxaldehyde (9) in 180 mL of toluene was added at around ambient temperature. The reaction mixture was stirred from 30 minutes to 5 hours. The solution was then cooled to around 5° C. and quenched with 200 mL of water. The solution was then heated to 40-85° C. and subsequently cooled to −5° C. The product was collected by filtration and washed with 60 g of water and 60 g of toluene. The yield was about 80 g of 4-[1-hydroxy-1-(2,3-dimethoxyphenyl)methyl]pyridine (10).

Herkunft & Nachweise