反应详情

温度

-70 °C

367 ml of NaHMDS (2M in THF) are added to 250 ml of THF and the mixture is cooled to −70° C. 54 g of (4-methoxyphenyl)acetic acid are then added; the mixture is left stirring for 2 hours and then 49 g of methyl 2,4-dichlorobenzoate are added. The reaction mixture is allowed to return to 10° C. and poured onto 2 liters of ice-cold HCl (2N), and the product is extracted with ether. After drying with a saturated sodium bicarbonate solution and then a saturated NaCl solution, drying the organic phase and evaporating, the product crystallizes from heptane; 32 g of the expected compound are obtained.

1. waitthe mixture is left
2. customto return to 10° C.
3. extractionthe product is extracted with ether
4. dry with materialAfter drying with a saturated sodium bicarbonate solution
5. dry with materiala saturated NaCl solution, drying the organic phase
6. customevaporating
7. customthe product crystallizes from heptane