1,3-Cyclohexadiene → 2-(4-Hydroxy-phenyl)-3-methyl-1-{4-[3-(piperidin-1-yl)-propoxy]-benzyl}-1H-indol-5-ol

HRID 2410092Notes

Reaction equation

HRID 2410092 reaction equation
C([O:8][C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[N:14]([CH2:18][C:19]1[CH:24]=[CH:23][C:22]([O:25][CH2:26][CH2:27][CH2:28][N:29]3[CH2:34][CH2:33][CH2:32][CH2:31][CH2:30]3)=[CH:21][CH:20]=1)[C:13]([C:35]1[CH:40]=[CH:39][C:38]([O:41]CC3C=CC=CC=3)=[CH:37][CH:36]=1)=[C:12]2[CH3:49])C1C=CC=CC=1.C1CCC=CC=1>O1CCCC1.C(O)C.[Pd]>[OH:41][C:38]1[CH:39]=[CH:40][C:35]([C:13]2[N:14]([CH2:18][C:19]3[CH:24]=[CH:23][C:22]([O:25][CH2:26][CH2:27][CH2:28][N:29]4[CH2:30][CH2:31][CH2:32][CH2:33][CH2:34]4)=[CH:21][CH:20]=3)[C:15]3[C:11]([C:12]=2[CH3:49])=[CH:10][C:9]([OH:8])=[CH:17][CH:16]=3)=[CH:36][CH:37]=1

Participants

6

Reactant 2

HCID 116051,3-CyclohexadieneHCID 102116765-Benzyloxy-2-(4-benzyloxy-phenyl)-1-(4-(3-piperidin-1-yl-propoxy)-benzyl]-3-methyl-1H-indole

Product 1

HCID 102054602-(4-Hydroxy-phenyl)-3-methyl-1-{4-[3-(piperidin-1-yl)-propoxy]-benzyl}-1H-indol-5-ol

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of 5-Benzyloxy-2-(4-benzyloxy-phenyl)-1-[4-(3-piperidin-1-yl-propoxy)-benzyl]-3-methyl-1H-indole No. 165 (2.35 g) in tetrahydrofuran (25 mL) and ethanol (25 mL) was added to 2.3 g of 10% palladium on carbon. Cyclohexadiene (10 mL) was added and the reaction allowed to stir at room temperature for 18 hours. The catalyst was filtered through celite and the reaction mixture was concentrated and chromatographed on silica gel using dichloromethane/methanol (4:1) to elute the product (0.8 g) as a white foam: Mp=125-130° C.; 1H NMR 9.68 (s, 1H), 8.70 (s, 1H), 7.15 (d, 2H, J=8.6 Hz), 7.05 (d, 1H, J=8.8 Hz), 6.85 (d, 2H, J=8.6 Hz), 6.80 (d, 1H, J=2.4 Hz), 6.74 (d, 4H, J=2.6 Hz), 6.57 (dd, 1H, J=8.6, 2.2 Hz), 5.09 (s, 2H), 3.88 (t, 2H, J=6.4 Hz), 3.60-3.15 (m, 2H), 2.62-2.38 (m, 4H), 2.09 (s, 3H), 1.92-1.78 (m, 2H), 1.55-1.43 (m, 4H), 1.42-1.30 (m, 2H); IR (KBr) 3400 (br), 2900, 1620, 1515 cm−1; MS eI m/z 470.

Workup

  1. filtrationThe catalyst was filtered through celite
  2. concentrationthe reaction mixture was concentrated
  3. customchromatographed on silica gel
  4. washto elute the product (0.8 g) as a white foam

Sources & evidence

ORD record
ord-2ed86bc7b2d44367953526333575dc1f
Source dataset
uspto-grants-2014_08
Patent number
US08815934B2

Reaction notes

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