Pyridine → HCID 10029488, compound

HRID 720006Notes

Reaction equation

HRID 720006 reaction equation
C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.BrN1C(=O)CCC1=O.[Cl:28][C:29]1[CH:30]=[C:31]([C@@H:39]([CH2:43][CH:44]2[CH2:48][CH2:47][CH2:46][CH2:45]2)[C:40]([OH:42])=O)[CH:32]=[CH:33][C:34]=1[S:35]([CH3:38])(=[O:37])=[O:36].[NH2:49][C:50]1[N:51]=[CH:52][C:53]([C:56]2[S:60][C:59]([C:61]#[N:62])=[CH:58][CH:57]=2)=[N:54][CH:55]=1.N1C=CC=CC=1>C(Cl)Cl>[Cl:28][C:29]1[CH:30]=[C:31]([C@@H:39]([CH2:43][CH:44]2[CH2:48][CH2:47][CH2:46][CH2:45]2)[C:40]([NH:49][C:50]2[CH:55]=[N:54][C:53]([C:56]3[S:60][C:59]([C:61]#[N:62])=[CH:58][CH:57]=3)=[CH:52][N:51]=2)=[O:42])[CH:32]=[CH:33][C:34]=1[S:35]([CH3:38])(=[O:36])=[O:37]

Participants

7

Reactant 5

HCID 1049PyridineHCID 11776TriphenylphosphineHCID 67184N-bromobutanimideHCID 12067655(R)-2-(3-Chloro-4-(methylsulfonyl)phenyl)-3-cyclopentylpropanoic acidHCID 21897346HCID 21897346, compound

Product 1

HCID 10029488HCID 10029488, compoundYield 56%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

A solution of triphenylphosphine (50.0 mg, 0.191 mmol) in methylene chloride (2 mL) cooled to 0° C. was treated with N-bromosuccinimide (35.0 mg, 0.197 mmol). The reaction mixture was stirred at 0° C. for 5 min and then treated with 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-propionic acid (prepared as in Example 1, 51.0 mg, 0.154 mmol). The reaction mixture was allowed to warm to 25° C. over 15 min. The reaction mixture was then treated with 5-(5-amino-pyrazin-2-yl)-thiophene-2-carbonitrile (47.0 mg, 0.232 mmol) followed by pyridine (30.0 uL, 0.371 mmol). The resulting reaction mixture was stirred at 25° C. for 2 h. The reaction mixture was then diluted with methylene chloride and washed with a dilute aqueous hydrochloric acid solution. The aqueous layer was extracted with methylene chloride. The combined organic layers were washed with a saturated aqueous sodium bicarbonate solution and water, dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo. Biotage chromatography (FLASH, 40S, Silica, 1/1 hexanes/ethyl acetate) afforded 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-N-[5-(5-cyano-thiophen-2-yl)-pyrazin-2-yl]-3-cyclopentyl-propionamide (44.4 mg, 55.9%) as a yellow foam: mp 101–107° C. (foam to gel); (ES)+-HRMS m/e calcd for C24H23ClN4O3S2 (M+H)+515.0973, found 515.0974.

Workup

  1. temperatureto warm to 25° C. over 15 min
  2. customThe resulting reaction mixture
  3. stirringwas stirred at 25° C. for 2 h
  4. washwashed with a dilute aqueous hydrochloric acid solution
  5. extractionThe aqueous layer was extracted with methylene chloride
  6. washThe combined organic layers were washed with a saturated aqueous sodium bicarbonate solution and water
  7. dry with materialdried over anhydrous sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-0e1b3bbc96a1428fa5ea4f990f2f2e13
Source dataset
uspto-grants-2006_11
Patent number
US07132425B2

Reaction notes

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