methyl E-4-[5-(3-carboxyprop-1-enyl)-1-propylindol-3-ylmethyl]-3-methoxybenzoate → HCID 14882687, compound

HRID 330208Notes

Reaction equation

HRID 330208 reaction equation
[C:1]([CH2:4]/[CH:5]=[CH:6]/[C:7]1[CH:8]=[C:9]2[C:13](=[CH:14][CH:15]=1)[N:12]([CH2:16][CH2:17][CH3:18])[CH:11]=[C:10]2[CH2:19][C:20]1[CH:29]=[CH:28][C:23]([C:24]([O:26][CH3:27])=[O:25])=[CH:22][C:21]=1[O:30][CH3:31])([OH:3])=[O:2]>[Pd].C(OCC)(=O)C.O1CCCC1>[C:1]([CH2:4][CH2:5][CH2:6][C:7]1[CH:8]=[C:9]2[C:13](=[CH:14][CH:15]=1)[N:12]([CH2:16][CH2:17][CH3:18])[CH:11]=[C:10]2[CH2:19][C:20]1[CH:29]=[CH:28][C:23]([C:24]([O:26][CH3:27])=[O:25])=[CH:22][C:21]=1[O:30][CH3:31])([OH:3])=[O:2]

Participants

5

Reactant 1

HCID 67834906methyl E-4-[5-(3-carboxyprop-1-enyl)-1-propylindol-3-ylmethyl]-3-methoxybenzoate

Product 1

HCID 14882687HCID 14882687, compoundYield 80.4%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

Palladium on carbon (1.1 g, 10% w/w) was added to a solution of methyl E-4-[5-(3-carboxyprop-1-enyl)-1-propylindol-3-ylmethyl]-3-methoxybenzoate (10.8 g) in ethyl acetate (300 ml) and tetrahydrofuran (100 ml), and the mixture hydrogenated at atmospheric pressure for 6 hr. The catalyst was removed by filtration through diatomaceous earth, the filter cake washed with ethyl acetate, and the combined filtrate evaporated. The residue was stirred in 1:4 ethyl acetate:hexane (150 ml) and the product isolated by filtration to give methyl 4-[5-(3-carboxypropyl)-1-propylindol-3-ylmethyl]-3-methoxybenzoate (8.72 g, 80%) as an off-white powder; mp 106°-109°; NMR (300 MHz, DMSO-d6): 0.81(t, 3H, CH3), 1.68-1.83(m, 4H), 2.20(t, 2H), 2.61(t, 2H), 3.83(s, 3H, OCH3), 3.91(s, 3H, OCH3), 4.02(m, 4H, NCH2, ArCH2Ar'), 6.92(d, 1H), 7.08(s, 1H), 7.23(m, 2H), 7.32(d, 1H), 7.44(m, 2H).

Workup

  1. customThe catalyst was removed by filtration through diatomaceous earth
  2. washthe filter cake washed with ethyl acetate
  3. customthe combined filtrate evaporated
  4. customhexane (150 ml) and the product isolated by filtration

Sources & evidence

ORD record
ord-ea6f0aa570da4062979958ce1c67aa88
Source dataset
uspto-grants-1990_01
Patent number
US04894386

Reaction notes

Loading…