[O:1]1[CH2:6][CH2:5][N:4]([CH2:7][CH2:8][C:9]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=2[C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)(O)[CH3:10])[CH2:3][CH2:2]1.C1(S(O)(=O)=O)C=CC=CC=1>C1C=CC=CC=1>[O:1]1[CH2:6][CH2:5][N:4]([CH2:7][CH:8]=[C:9]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=2[C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[CH3:10])[CH2:3][CH2:2]1A mixture of 3.1 g of 1-morpholino-3-p-biphenylylbutan-3-ol, 0.1 g of benzenesulfonic acid and 80 ml of benzene is boiled for 24 hours under a water separator. After working up in the customary manner, 1-morpholino-3-p-biphenylyl-2-butene is obtained.
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