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Chemical Structure| 526-55-6 Chemical Structure| 526-55-6
Chemical Structure| 526-55-6

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3-(2-Hydroxyethyl)indole is an aromatic alcohol participate in many biological reactions.

Synonyms: Indole-3-ethanol; IEA; NSC 3884

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Product Details of Tryptophol

CAS No. :526-55-6
Formula : C10H11NO
M.W : 161.20
SMILES Code : OCCC1=CNC2=CC=CC=C21
Synonyms :
Indole-3-ethanol; IEA; NSC 3884
MDL No. :MFCD00005659
InChI Key :MBBOMCVGYCRMEA-UHFFFAOYSA-N
Pubchem ID :10685

Safety of Tryptophol

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H317
Precautionary Statements:P280

Application In Synthesis of Tryptophol

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 526-55-6 ]

[ 526-55-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 18372-22-0 ]
  • [ 526-55-6 ]
YieldReaction ConditionsOperation in experiment
80% With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 70℃; for 5h;Inert atmosphere; In a three-necked flask, 47 mL lithium aluminum hydride (4.44 g, 117 mmol, 2.5 mol/L THF solution) was injected under Nitrogen at 0 C. 10.15 g (50 mmol) 1 was dissolved in 36 mL of dry THF. The above solution was added dropwise for a period of 1 h, then heated to 70 C for 4 hours. The reaction was complete and quenched by the Fisher treatment for a suspension. The suspension was filtered and the filter cake washed with ethyl acetate. The combined organic layer was wash with brine, dry over Na2SO4 and concentrated in vacuum. The residue was purified by flash silica gel column chromatography(ethyl acetate / petroleum ether, 25%) to obtain a white solid 2 (6.44 g, 80% yield).
80% With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 70℃; for 5h;Inert atmosphere; In a three-necked flask, under nitrogen protection, inject 47mL lithium aluminum hydride (4.44g, 117mmol, 2.5mol/L THF solution), place it at 0, and dissolve 10.15g (50mmol) yellow solid 1 in 36mL THF , Added dropwise to the above solution for 1 hour, then heated to 70C to keep the reaction for 4 hours, the reaction was complete, the reaction was quenched by Fieser treatment, the resulting suspension was filtered, the filter cake was washed with ethyl acetate, saturated salt The filtrate was washed with water, the organic layer was separated, concentrated, and finally purified by silica gel column chromatography to obtain 6.44 g of white solid 2 with a yield of 80%.
With sodium borohydrid; In isopropyl alcohol; EXAMPLE 1 3-(2-Hydroxyethyl)indole A vigorously-stirred mixture of isopropanol (3 1), methyl 3- indolylglyoxylate (305 g) and sodium borohydride (125 g) was warmed to 40 - 50 and held at that temperature until the initial exothermic reaction was complete. The mixture was then heated to reflux for 4 hours, cooled and diluted with water (5 l). After acidification with hydrochloric acid the product was extracted into dichloromethane. The separated extract was washed with sodium carbonate solution to remove 3-indolylacetic acid and then with water. Evaporation of the solvent gave the crude product as a brown oil. This was distilled at 0.5 - 1 mm pressure (vapour temperature 160 - 190) and crystallized from toluene (1 l) to give the title compound as white to pale brown crystals m.p. 57 - 59. Yield 170 g. (70% of theory).
1.3 g With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 20℃; for 4h;Inert atmosphere; To a solution of indole (10.0 mmol, 1.0 equiv) in dry Et2O (50 mL) was added dropwise oxalyl chloride (2.7 mL, 30.0 mmol, 3.0 equiv) at 0 C. Then the ice bath was removed and the resulting yellow slurry was stirred for 6 h at room temperature. The reaction mixture was then cooled to 0 C and quenched with MeOH (2.0 mL, 50.0 mmol, 5.0 equiv). The crude precipitate was collected by filtration and was washed with cold Et2O. The solid 3 was dried under vacuum and useddirectly for the next step without further purification.A solution of compound 3 in THF (20 mL) was added dropwise to a suspension of LiAlH4 (1.5 g, 4.0equiv) in THF (40 mL) at 0 C. The reaction mixture was stirred for 4 h at room temperature and quenched with H2O (1.5 mL), 10% aqueous NaOH (3.0 mL), and H2O (4.5 mL) slowly at 0 C. Thereaction mixture was then filtered and the filtrate was extracted with EtOAc. The combined organic layerswere dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude mixture was purified by flash column chromatography on silica gel (petroleum ether:EtOAc, v/v = 1:1) to give tryptophol 5 (1.3 g, 80% for two steps) as a yellow solid. NMR data were in consistent with those reported.15

  • 2
  • [ 2346-26-1 ]
  • [ 526-55-6 ]
  • 3-(2-(1H-indol-3-yl)ethyl)oxazolidine-2,4-dione [ No CAS ]
 

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