[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[CH2:9][NH:8][CH2:7][CH2:6]2.[C:13](Cl)(=[O:21])[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20].Cl.C(=O)([O-])[O-].[Na+].[Na+]>C(Cl)Cl.O.C(N(CC)CC)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[CH2:9][N:8]([C:13](=[O:21])[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20])[CH2:7][CH2:6]2
4.0 g of 6-methoxy-1,2,3,4-tetrahydroisoquinoline and 3.5 ml of triethylamine in 50 ml of methylene chloride are initially introduced, and a solution of 4.0 g of octanoyl chloride in 10 ml of methylene chloride is added dropwise with stirring and cooling. The mixture is stirred at room temperature for 1 hour, then shaken with 1N hydrochloric acid, sodium carbonate solution and water, and the organic phase is dried over magnesium sulfate and evaporated in a rotary evaporator. The crude product (6.7 g of colorless oil) is reacted further without purification.
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