[C:1]1([C:7]2[C:16]3[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=3[CH2:14][CH:13]3[C:8]=2[CH2:9][CH2:10][NH:11][CH2:12]3)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(=O)([O-])[O-].[Na+].[Na+].[I-].[Na+].[CH:29](Br)([CH3:31])[CH3:30]>CN(C)C=O>[CH:29]([N:11]1[CH2:10][CH2:9][C:8]2[CH:13]([CH2:14][C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=3[C:7]=2[C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[CH2:12]1)([CH3:31])[CH3:30]A mixture of 22.0 g of 1,2,3,4,10,10a-hexahydro-5phenylbenz[g]isoquinoline, 20.0 g of sodium carbonate and 0.2 g of sodium iodide in 180 ml of dimethylformamide are preheated to 50°. 16.5 g of isopropylbromide in 50 ml of dimethylformamide are added dropwise to the suspension over a 2 hour period, the reaction mixture further stirred for 3.5 hours at the same temperature, cooled and poured onto ice/water. The organic substance is extracted with benzene, the extracts washed with water, dried over sodium sulphate and evaporated and the title compound which remains converted to the fumarate form in isopropyl. M.P. 199°-200°.
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