Triethylsilane → 1-Chloro-4-iodo-2-(4-methoxybenzyl)benzene

Temperature

70 °C

(2-chloro-5-iodophenyl)(4-methoxyphenyl)methanone (12.0 g, 32.2 mmol) and triethyl silane (9.86 g, 84.8 mmol) were dissolved in acetonitrile (200 mL). To the resulting mixture was added boron trifluoride-diethyl etherate complex (13.7 g, 96.5 mmol) at 0° C. After the completion of dropwise addition, the mixture was warmed up to 70° C., and stirred for 3 hr. Then the mixture was cooled to room temperature. The mixture was quenched with a saturated sodium bicarbonate solution, and extracted with ethyl acetate (200 mL×3). The organic phases were combined, washed with a saturated sodium chloride solution, dried over anhydrous sodium sulphate, and concentrated under a reduced pressure. The resulting crude product was purified with a silica-gel column chromatography (ethyl acetate:petroleum ether=0-1:100) to produce 10.0 g of a product in a yield of 87%.

1. additionAfter the completion of dropwise addition
2. temperatureThen the mixture was cooled to room temperature
3. customThe mixture was quenched with a saturated sodium bicarbonate solution
4. extractionextracted with ethyl acetate (200 mL×3)
5. washwashed with a saturated sodium chloride solution
6. dry with materialdried over anhydrous sodium sulphate
7. concentrationconcentrated under a reduced pressure
8. customThe resulting crude product was purified with a silica-gel column chromatography (ethyl acetate:petroleum ether=0-1:100)

ORD record

ord-4770547da27b4715aa9cef68bff75630

Source dataset

uspto-grants-2016_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09315438B2