[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C@H:9]([OH:17])[CH2:10][C@H:11]2[CH2:15][CH2:14][CH2:13][N:12]2[CH3:16])[CH:6]=[CH:7][CH:8]=1.[C:18](OC(=O)C)(=[O:20])[CH3:19]>>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C@H:9]([O:17][C:18](=[O:20])[CH3:19])[CH2:10][C@H:11]2[CH2:15][CH2:14][CH2:13][N:12]2[CH3:16])[CH:6]=[CH:7][CH:8]=1According to the method of working described in Example 28, from 3.0 g of (R*,R*)-1-(3-methoxyphenyl)-2-(1-methyl-2-pyrrolidinyl)-ethanol and 30 ml of acetic acid anhydride there are obtained 1.56 g of the title compound as tough, colourless oil of b.p. 130° at 0.008 mm Hg.
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