Pyridine → (2-Butyl-5-methylsulfanylamino-benzofuran-3-yl)-[4-(3-dibutylamino-propoxy)-phenyl]-methanone

Temperature

0 °C

4.78 g of (5-amino-2-butyl-benzofuran-3-yl)-[4-(3-dibutylamino-propoxy)-phenyl]-methanone (III) (0.01 mol, 1 eq) and 35 mL of pyridine were placed into a flask. The mixture was cooled down to 0° C. and 0.99 g of methanesulfenyl chloride (II) (0.012 mol, 1.2 eq; freshly prepared as described in the above mentioned literature) was added in 10 min. The mixture was stirred at 0° C. for 3 hours and then heated to room temperature and stirred for 6 hours. The mixture was poured into 100 mL of water. The product was extracted with 50 mL of dichloromethane. The organic phase was washed with 30 mL of water. The solvent was evaporated and the product was purified by column chromatography (column: spheric silica (60 Å); eluent: toluene:ethyl acetate=70:30) to obtain 2.2 g of compound (IV) (42%) as a light yellow oil.

1. customfreshly prepared
2. additionwas added in 10 min
3. temperatureheated to room temperature
4. stirringstirred for 6 hours
5. extractionThe product was extracted with 50 mL of dichloromethane
6. washThe organic phase was washed with 30 mL of water
7. customThe solvent was evaporated
8. customthe product was purified by column chromatography (column: spheric silica (60 Å); eluent: toluene:ethyl acetate=70:30)

ORD record

ord-c4fb2175e4de4421b23f3a162ca82f8c

Source dataset

uspto-grants-2016_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09249119B2