Trifluoroacetic acid → 2-Pyridinamine, 5-[[5-chloro-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-3-yl]methyl]-

HRID 1024286Notes

Reaction equation

HRID 1024286 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][C:5]([CH:8]([C:10]2[C:18]3[C:13](=[N:14][CH:15]=[C:16]([Cl:19])[CH:17]=3)[N:12]([S:20]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)(=[O:22])=[O:21])[CH:11]=2)O)=[CH:4][CH:3]=1.C([SiH](CC)CC)C.FC(F)(F)C(O)=O>ClCCl>[C:23]1([S:20]([N:12]2[C:13]3=[N:14][CH:15]=[C:16]([Cl:19])[CH:17]=[C:18]3[C:10]([CH2:8][C:5]3[CH:4]=[CH:3][C:2]([NH2:1])=[N:7][CH:6]=3)=[CH:11]2)(=[O:22])=[O:21])[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 57619405alpha-(6-Amino-3-pyridinyl)-5-chloro-1-(phenylsulfonyl)-1H-pyrrolo(2,3-b)pyridine-3-methanol

Product 1

HCID 576192232-Pyridinamine, 5-[[5-chloro-1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridin-3-yl]methyl]-Yield 73%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To (6-amino-pyridin-3-yl)-(1-benzenesulfonyl-5-chloro-1H-pyrrolo[2,3-b]pyridin-3-yl)-methanol (598, 1.00 g, 0.00241 mol) in dichloromethane (25.0 mL) were added triethylsilane (3.00 mL, 0.0188 mol) and trifluoroacetic acid (1.50 mL, 0.0195 mol). The reaction was stirred at room temperature overnight, then concentrated, poured into aqueous potassium carbonate, and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 20% to 100% ethyl acetate in hexane to give the desired compound (599, 0.70 g, 73%).

Workup

  1. concentrationconcentrated
  2. additionpoured into aqueous potassium carbonate
  3. extractionextracted with ethyl acetate
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated
  7. custompurified by silica gel column chromatography
  8. washeluting with 20% to 100% ethyl acetate in hexane

Sources & evidence

ORD record
ord-d914d42095684b19930f5f681f82bb54
Source dataset
uspto-grants-2014_05
Patent number
US08722702B2

Reaction notes

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