反应详情

3.4 ml of LDA (lithium diisopropylamide) 1M in THF (3.4 mmol) are added under nitrogen to a solution of p-tert-butylacetophenone (500 mg, 2.8 mmol) in THF (15 ml) at −78° C. The mixture is stirred for 1 h before 5 ml of a THF solution of p-methoxybenzaldehyde (425 mg, 3.1 mmol) are added. The reaction is allowed to reach -400C over the course of 1 h. A cold aqueous solution of NH4Cl 1N is subsequently added to the reaction mixture. The resultant mixture is partitioned between water (30 ml) and dichloromethane (30 ml). The resultant aqueous phase is subsequently extracted with dichloromethane (2×30 ml). The combined organic phases are dried over MgSO4. Removal of the solvent gives 3-(4-methoxyphenyl)-3-hydroxy-1-(4-tert-butylphenyl)propan-1-one.

1. additionare added
2. customover the course of 1 h
3. customThe resultant mixture is partitioned between water (30 ml) and dichloromethane (30 ml)
4. extractionThe resultant aqueous phase is subsequently extracted with dichloromethane (2×30 ml)
5. dry with materialThe combined organic phases are dried over MgSO4
6. customRemoval of the solvent