[Cl:1][C:2]1[CH:11]=[CH:10][C:9]2[CH:8]([OH:12])[CH2:7][CH2:6][CH2:5][C:4]=2[N:3]=1.N1C=CN=C1.[CH3:18][C:19]([Si:22](Cl)([CH3:24])[CH3:23])([CH3:21])[CH3:20]>CN(C=O)C.CCOC(C)=O>[Si:22]([O:12][CH:8]1[CH2:7][CH2:6][CH2:5][C:4]2[N:3]=[C:2]([Cl:1])[CH:11]=[CH:10][C:9]1=2)([C:19]([CH3:21])([CH3:20])[CH3:18])([CH3:24])[CH3:23]A solution of 2-chloro-5,6,7,8-tetrahydroquinolin-5-ol (500 mg, 2.72 mmol) in DMF (10 mL) was treated with imidazole (260 mg, 3.81 mmol). After complete dissolution TBDMS-Cl was added and the resulting mixture was stirred at RT for 16 h. The reaction mixture was diluted with EtOAc (40 mL) and was washed with brine (5×). The organic layer was collected, dried with Na2SO4, filtered, and the solvent was evaporated at reduced pressure yielding the titled compound as an oil. Amount 760 mg. Yield 94%.
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