Structure of 169674-02-6
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 169674-02-6 |
Formula : | C8H5ClFN |
M.W : | 169.58 |
SMILES Code : | FC1=C(Cl)C2=C(NC=C2)C=C1 |
MDL No. : | MFCD12924664 |
InChI Key : | TUYZSKJQXNCPLN-UHFFFAOYSA-N |
Pubchem ID : | 11607987 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80.1% | With tetrabutyl ammonium fluoride; In tetrahydrofuran; at 20℃; for 0.5h; | A solution of tetrabutylammonium fluoride hydrate (1.9 g, 7.38 mmol) and compound 2 (1.2 g, 3.69 mmol) in THF (30 mL) was stirred for 30 min at room temperature. The mixture was diluted with diethyl ether (30 mL), washed with brine (30 mL), dried with sodium sulfate, filtered, and concentrated in vacuo. Purification by column chromatography (PE/EA=50:1) provided compound 3 (0.5 g, 80.1%) as a brown oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; tetrabutylammomium bromide; In dichloromethane; ammonia; ethylene dibromide; | d) A solution of 130 mg of <strong>[169674-02-6]4-chloro-5-fluoroindole</strong> in 3.7 ml of 1,2-dibromoethane was treated with 3.7 ml of 28% NaOH and 7.7 mg of tetrabutylammonium bromide. The mixture was stirred at 50 for 5 hours. The phases were separated and the aqueous phase was s extracted with toluene. The combined organic phases were washed with water and dried over sodium sulfate. The solvent was distilled off and the residue was chromatographed over 15 g of silica gel with hexane-ethyl acetate (5:1). There was obtained a yellow oil which was suspended in 30 ml of liquid ammonia and stirred in an autoclave at 80 for 16 hours. After evaporation of the ammonia the residue was taken up in dichloromethane and washed with water and saturated sodium chloride solution. The organic phase was dried over sodium sulfate and the solvent was distilled off. The residue was chromatographed over 15 g of silica gel with ethyl acetate-methanol (5:1). There were obtained 110 mg of a yellow oil which was dissolved in 16 ml of ether, treated with 60 mg (0.5 mmol) of fumaric acid and stirred for 2 days. The crystals were filtered off and dried. There were obtained 150 mg (59%) of 2-(4-chloro-5-fluoro-indol-1-yl)-ethylamine fumarate (1:1) with m.p. 200-201 (dec.) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
c) A metal bath was heated to 300-320. 4.8 g of 4-chloro-5-fluoroindole-2-carboxylic acid were introduced under argon and, after three minutes, the metal bath was removed. The reaction mixture was distilled in a bulb-tube at 0.15 mbar and 75 bath temperature. There were obtained 3.15 g (83%) of 4-chloro-5-fluoroindole as white crystals with m.p. 41-43. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In tetrahydrofuran; water; | a) A suspension of 0.11 g of sodium hydride dispersion in 15 ml of tetrahydrofuran was treated with 0.5 g of <strong>[169674-02-6]4-chloro-5-fluoroindole</strong> at 0 and stirred at this temperature for 1 hour. After the addition of 0.4 ml of (S)-methyloxirane the reaction mixture was stirred at s room temperature for 48 hours and subsequently treated with water. The mixture was diluted with ether, washed with water and with saturated sodium chloride solution and the organic phase was dried over sodium sulfate. After removal of the solvent the residue was chromatographed over 30 g of silica gel with toluene-ethyl acetate (33:1). There was obtained 0.53 g (78.9%) of (S)-1-(4-chloro-5-fluoro-indol-1-yl)-propan-2-ol as a yellow oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In tetrahydrofuran; water; | a) A suspension of 0.11 g of sodium hydride dispersion in 15 ml of tetrahydrofuran was treated with 0.5 g of <strong>[169674-02-6]4-chloro-5-fluoroindole</strong> at 0 and stirred at this temperature for 1 hour. After the addition of 0.4 ml of (R)-methyloxirane the reaction mixture was stirred at room temperature for 48 hours and subsequently treated with water. The mixture was diluted with ether, washed with water and with saturated sodium chloride solution and the organic phase was dried over sodium sulfate. After removal of the solvent the residue was chromatographed over 30 g of silica gel with toluene-ethyl acetate (33:1). There was obtained 0.5 g (74.5%) of (R)-1-(4-chloro-5-fluoro-indol-1-yl)-propan-2-ol as a yellow oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
4-chloro-5-fluoro-1 H-pyrrolo[2,3-b]pyridine (500 mg, 2.931 mmol) in dioxane (12 ml.) was warmed to 40 C until a solution resulted. 4M HCI in dioxane solution (800 muIota_, 3.224 mmol) was added dropwise. The reaction mixture was cooled to room temperature and filtered. The solid was washed with diethyl ether and dried. It was then suspended in acetonitrile (10 ml.) and treated with sodium iodide (2.63 g, 17.55 mmol). The reaction mixture was heated at 80 C overnight. After cooling to room temperature, reaction mixture was treated with 1 N sodium hydroxide solution until it was basic. It was then extracted with ethyl acetate and washed with water. The combined organic layers were washed with saturated aqueous sodium chloride solution, dried, filtered and concentrated under reduced pressure to afford 5-fluoro-4-iodo-1 H-indole. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
69% | With trichlorophosphate; at 0 - 40℃; for 1.5h; | POCl3 (2.2 g, 14.5 mmol) was added dropwise to a solution of compound 3 (1.69 g, 10 mmol) in DMF (15 mL) at 0 C. The resulting mixture was stirred at 0 C. for 0.5 h, and additional DMF (5 mL) was added. The reaction mixture was stirred at 40 C. for 1 h. After it was cooled to rt, ice water (3 mL) was added and aqueous sodium hydroxide (4 M) was added to adjust pH to 11. The mixture was heated to reflux for 0.5 h. After it was cooled to rt, the mixture was extracted with ethyl acetate (2×50 mL). The combined organic layers were washed with brine, dried with sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by column chromatography (PE/EA=10:1) to provide the aldehyde (1.35 g, 69%) as a yellow solid. |
A1483178 [85462-61-9]
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