[C:1]1([N:7]2[CH:11]=[CH:10][C:9]([CH:12]=[O:13])=[CH:8]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Mg].Br[CH2:16][CH2:17][CH2:18][CH2:19][CH3:20]>>[OH:13][CH:12]([C:9]1[CH:10]=[CH:11][N:7]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)[CH:8]=1)[CH2:16][CH2:17][CH2:18][CH2:19][CH3:20]This compound was synthesized according to the procedure described in Example 3. Thus, starting from 2.2 g of 1-phenylpyrrole-3-aldehyde, 1.2 g of magnesium and 3.8 g of 1-bromopentane, 3 g of pure product was obtained as an oil.
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