Triethylamine → N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)cyclobutanecarboxamide

HRID 875764

Reaction equation

HRID 875764 reaction equation
[Br:1][C:2]1[C:3]([F:12])=[C:4]2[C:10]([NH2:11])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[CH:13]1([C:17](O)=[O:18])[CH2:16][CH2:15][CH2:14]1.C(N(CC)CC)C.C1N(P(Cl)(N2C(=O)OCC2)=O)C(=O)OC1.O[Li].O>C(Cl)Cl.O>[Br:1][C:2]1[C:3]([F:12])=[C:4]2[C:10]([NH:11][C:17]([CH:13]3[CH2:16][CH2:15][CH2:14]3)=[O:18])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1

Participants

8

Reactant 5

HCID 8471TriethylamineHCID 19494Cyclobutanecarboxylic acidHCID 152842Bis(2-oxo-3-oxazolidinyl)phosphinic chlorideHCID 168937Lithium hydroxide, monohydrateHCID 602052765-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-amine

Product 1

HCID 60205443N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)cyclobutanecarboxamideYield 71.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of 5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-amine (200 mg, 0.869 mmol, Example 1, Step H), cyclobutanecarboxylic acid (218 mg, 2.17 mmol) and triethylamine (606 μL, 4.35 mmol) in CH2Cl2 (10 mL) at room temperature was treated with BOP-Cl (203 mg, 2.17 mmol). The reaction was stirred at room temperature for 42 hours. The reaction mixture was then treated with 2M LiOH.H2O (2 mL) and stirred at room temperature for 18 hours. Water (10 mL) was added to the reaction mixture, and the solid formed was filtered, washed with additional water, and dried to provide N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)cyclobutanecarboxamide (193 mg, 71% yield) as a solid. 1H NMR (400 MHz, (CD3)2SO) δ 12.04 (br s, 1H), 9.33 (s, 1H), 8.33 (d, 1H), 7.57 (s, 1H), 3.29-3.24 (m, 1H), 2.25-2.18 (m, 2H), 2.15-2.08 (m, 2H), 1.98-1.88 (m, 1H), 1.86-1.78 (m, 1H); LCMS (APCI+) m/z 311.9, 314.0 (M+H)+, Retention time=2.96 minutes (Method 2).

Workup

  1. stirringstirred at room temperature for 18 hours
  2. customthe solid formed
  3. filtrationwas filtered
  4. washwashed with additional water
  5. customdried

Sources & evidence

ORD record
ord-2182f53607604313a7162be46f5fb895
Source dataset
uspto-grants-2015_03
Patent number
US08981085B2

Linked notes

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