Diisopropylethylamine → HCID 9863301, compound

HRID 398500Notes

Reaction equation

HRID 398500 reaction equation
[CH:1]1([CH2:6][CH:7]([C:11]2[CH:16]=[CH:15][C:14]([Cl:17])=[C:13]([Cl:18])[CH:12]=2)[C:8]([OH:10])=O)[CH2:5][CH2:4][CH2:3][CH2:2]1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.C(N(CC)C(C)C)(C)C.S(O)(O)(=O)=O.[NH2:60][C:61]1[NH:62][CH:63]=[CH:64][N:65]=1>CN(C)C=O>[CH:1]1([CH2:6][CH:7]([C:11]2[CH:16]=[CH:15][C:14]([Cl:17])=[C:13]([Cl:18])[CH:12]=2)[C:8]([NH:60][C:61]2[NH:62][CH:63]=[CH:64][N:65]=2)=[O:10])[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 135136Bis(2-amino-1H-imidazole) sulphateHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 27627253-cyclopentyl-2-(3,4-dichlorophenyl)propanoic Acid

Product 1

HCID 9863301HCID 9863301, compoundYield 33%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 3-cyclopentyl-2-(3,4-dichlorophenyl)-propionic acid (prepared as in Example 38A, 200 mg, 0.70 mmol), benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate (310 mg, 0.70 mmol), N,N-diisopropylethylamine (244 μL, 1.40 mmol), and 2-aminoimidazole sulfate (140 mg, 1.05 mmol) in dry N,N-dimethylformamide (5 mL) was stirred at 25° C. under nitrogen for 15 h. The reaction mixture was partitioned between water and ethyl acetate. The organic layer was washed sequentially with a 1N aqueous hydrochloric acid solution, water, and a saturated aqueous sodium chloride solution. The organic layer was dried over magnesium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, 1/3 hexanes/ethyl acetate) afforded 3-cyclopentyl-2-(3,4-dichlorophenyl)-N-(1H-imidazol-2-yl)-propionamide (81.4 mg, 33%) as a white solid: mp 58-60° C.; EI-HRMS m/e calcd for C17H19Cl2N3O (M+) 351.0905, found 351.0901.

Workup

  1. customThe reaction mixture was partitioned between water and ethyl acetate
  2. washThe organic layer was washed sequentially with a 1N aqueous hydrochloric acid solution, water
  3. dry with materialThe organic layer was dried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-a8138af4a09c4418b010c5155d5f2a69
Source dataset
uspto-grants-2003_08
Patent number
US06610846B1

Reaction notes

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