1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 86656246, compound

HRID 79060Notes

Reaction equation

HRID 79060 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[C:17]([C:18]([OH:20])=O)=[CH:16][CH:15]=[C:14]3[C:10]=2[CH:11]=[N:12][NH:13]3)=[C:4]([F:21])[CH:3]=1.[CH:22]([O:24][CH2:25][CH2:26][O:27][NH2:28])=[CH2:23].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>CN(C=O)C>[CH:22]([O:24][CH2:25][CH2:26][O:27][NH:28][C:18]([C:17]1[C:9]([NH:8][C:5]2[CH:6]=[CH:7][C:2]([Br:1])=[CH:3][C:4]=2[F:21])=[C:10]2[C:14](=[CH:15][CH:16]=1)[NH:13][N:12]=[CH:11]2)=[O:20])=[CH2:23]

Participants

7

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 21867017O-(2-(Vinyloxy)ethyl)hydroxylamineHCID 670840974-(4-bromo-2-fluorophenylamino)-1H-indazole-5-carboxylic acid

Product 1

HCID 86656246HCID 86656246, compoundYield 67%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 4-(4-bromo-2-fluorophenylamino)-1H-indazole-5-carboxylic acid (115 mg, 0.33 mmol) and O-(2-vinyloxy-ethyl)-hydroxylamine (51 mg, 0.49 mmol) in DMF (3 mL) was added EDCI (69 mg, 0.36 mmol), HOBt (49 mg, 0.36 mmol) and DIPEA (61 μL, 0.36 mmol). The reaction mixture was stirred at room temperature for 4 hours before being concentrated in vacuo. The resultant residue was dissolved in ethyl acetate (10 mL), washed with aqueous saturated sodium bicarbonate solution (10 mL) and the aqueous fraction extracted twice with ethyl acetate (2×10 mL). The combined organic extracts were washed with brine (20 mL), dried (MgSO4) and concentrated in vacuo. The resultant residue was subjected to flash chromatography (Si—SPE, gradient 0-10% methanol in DCM) to yield the title compound as a pale yellow solid (96 mg, 67%). LCMS (Method B): RT=3.43 min, [M−H]−=433/435.

Workup

  1. concentrationbefore being concentrated in vacuo
  2. dissolutionThe resultant residue was dissolved in ethyl acetate (10 mL)
  3. washwashed with aqueous saturated sodium bicarbonate solution (10 mL)
  4. extractionthe aqueous fraction extracted twice with ethyl acetate (2×10 mL)
  5. washThe combined organic extracts were washed with brine (20 mL)
  6. dry with materialdried (MgSO4)
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-59f7cb8a1c1743159947933b2496d8ad
Source dataset
uspto-grants-2014_09
Patent number
US08841462B2

Reaction notes

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