3-HYDROXYMETHYLINDOLE-1-CARBOXYLIC ACID TERT-BUTYL ESTER Chemical Properties

Boiling point:

396.0±34.0 °C(Predicted)

Density 

1.14±0.1 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

solubility 

Chloroform, Dichloromethane

form 

Solid

pka

14.38±0.10(Predicted)

color 

Light Brown

Safety Information

Hazard Codes 

Xi

HazardClass 

IRRITANT

HS Code 

2933998090

3-HYDROXYMETHYLINDOLE-1-CARBOXYLIC ACID TERT-BUTYL ESTER Usage And Synthesis

Chemical Properties

3-HYDROXYMETHYLINDOLE-1-CARBOXYLIC ACID TERT-BUTYL ESTER is Light Brown Solid

Uses

3-HYDROXYMETHYLINDOLE-1-CARBOXYLIC ACID TERT-BUTYL ESTER can be used in the preparation of arylpiperidinones for treatment of inflammation.

Synthesis

Step 2. To a solution of tert-butyl 3-formyl-1H-indole-1-carboxylate (44 g, 0.17 mol) in anhydrous ethanol (50 mL) was added sodium borohydride (16.6 g, 0.45 mol) in batches at 0 °C. The reaction mixture was stirred at room temperature for 3 hours. Upon completion of the reaction, the mixture was filtered to remove insoluble material. The filtrate was rotary evaporated to remove ethanol. The residue was dissolved in ethyl acetate (100 mL) and water (50 mL) for partitioning. The aqueous layer was further extracted with ethyl acetate (2 x 50 mL). The combined organic layers were washed with saturated saline (50 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure to give tert-butyl 3-(hydroxymethyl)-1H-indole-1-carboxylate (40 g, 95% yield). The product was characterized by 1H NMR (400 MHz, CDCl3): δ 1.59 (s, 9H), 4.77 (s, 2H), 7.19 (t, 1H), 7.25 (t, 1H), 7.51 (s, 1H), 7.57 (d, 1H), 8.06 (d, 1H).

References

[1] Liebigs Annalen der Chemie, 1985, # 2, p. 413 - 417
[2] Journal of Organic Chemistry, 2016, vol. 81, # 4, p. 1723 - 1730
[3] Chemical and Pharmaceutical Bulletin, 2016, vol. 64, # 8, p. 1242 - 1247
[4] Patent: WO2013/148365, 2013, A1. Location in patent: Paragraph 0083
[5] Synthetic Communications, 2000, vol. 30, # 12, p. 2143 - 2159

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