[CH2:1]1[C:10](=[O:11])[CH2:9][C:8]2[C:3](=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH2:2]1.C(N(CC)CC)C.[CH3:19][Si:20](Cl)([CH3:22])[CH3:21]>CN(C)C1C=CN=CC=1.C(Cl)Cl>[CH3:19][Si:20]([CH3:22])([CH3:21])[O:11][C:10]1[CH2:1][CH2:2][C:3]2[C:8](=[CH:7][CH:6]=[CH:5][CH:4]=2)[CH:9]=1Charge an oven dried, nitrogen flushed 100-mL round bottomed flask equipped with a stirring bar with β-tetralone (4.977 grams, 0.0340 moles), triethylamine (6.970 grams, 0.0689 moles), 4-dimethylamino pyridine (0.219 grams,0.0018 moles), trimethylsilyl chloride (7.704 grams, 0.0709 moles) and 30 mL methylene chloride. Stir at RT for 20 hours, filter, wash the solid with 1×20 mL methylene chloride, wash the combined organic layers with 1×5 mL saturated sodium bicarbonate solution, 1×5 mL water, dry over magnesium sulfate, concentrate on a Buchi rotavapor and distill (96°-99° C., 1 Torr) to yield the product as a viscous oil.
Wird geladen…
