反应详情

A solution of N-trifluoroacetyl-2-iodo-5-methoxyphenethylamine (23.8 g, 63.8 mmol) in toluene (425 mL) was sequentially treated with K2CO3 (12.4 g, 89.8 mmol), KOH (11.6 g, 207 mmol), n-Bu4NBr (2.2 g, 6.9 mmol) and allyl bromide (10.7 g, 89.8 mmol). The mixture was stirred at 80 C for 3.5 hours, cooled to 20 C, acidified with 10% aqueous HCl, separated and the aqueous phase extracted with ether (500 mL). The combined organic phases were washed with brine (200 mL), dried with Na2SO4 and concentrated to give 20.5 g of a brown oil. 1H NMR (400 MHz, CDCl3), mixture of rotamers d 7.67 (m, 1H), 6.80 (m, 1H), 6.57 (m, 1H), 5.9-5.6 (bm, 1H), 5.27 (m, 2H), 4.11 (d, J=6 Hz, 0.5H), 3.85 (d, J=6 Hz, 0.5H), 3.77 (m, 3H), 3.55 (m, 2H), 3.00 (m, 2H). MS calculated for C14H15F3INO2+H: 414, observed: 414.

1. temperaturecooled to 20 C
2. customseparated
3. extractionthe aqueous phase extracted with ether (500 mL)
4. washThe combined organic phases were washed with brine (200 mL)
5. dry with materialdried with Na2SO4
6. concentrationconcentrated