反应详情

n-Butyllithium (2.5 M in hexanes, 0.22 mL, 0.56 mmol) was added to a solution of 12 (100 mg, 0.50 mmol) in anhydrous THF (790 μL) at 0° C. After 5 minutes, iodine (141 mg, 0.56 mmol) in anhydrous THF (320 μL) was added. After 2 hours at room temperature, the reaction was quenched via dropwise addition of MeOH and the solvent was concentrated. Water (5 mL) was added and the solution was extracted with EtOAc (3×10 mL). Combined organics were washed with saturated aqueous Na2S2O3, saturated aqueous NaCl, dried (Na2SO4), filtered, and concentrated to afford 15 as a brown oil (129 mg, 79%): 1H NMR (CDCl3, 100 MHz) 7.25-7.18 (m, 1H), 6.79-6.71 (m, 2H), 5.27 (s, 2H), 5.18 (s, 2H), 3.54 (s, 3H), 3.50 (s, 3H); IR (film) νmax 2953, 2924, 2853, 1458, 1377 cm−1.

1. waitAfter 2 hours at room temperature
2. customthe reaction was quenched via dropwise addition of MeOH
3. concentrationthe solvent was concentrated
4. additionWater (5 mL) was added
5. extractionthe solution was extracted with EtOAc (3×10 mL)
6. washCombined organics were washed with saturated aqueous Na2S2O3, saturated aqueous NaCl
7. dry with materialdried (Na2SO4)
8. filtrationfiltered
9. concentrationconcentrated