Triphenylphosphine → HCID 50991565, compound

HRID 220410Notes

Reaction equation

HRID 220410 reaction equation
[CH:1]1([N:4]([CH:25]2[CH2:27][CH2:26]2)[C:5]([C:7]2[N:22]([CH2:23][CH3:24])[C:10]3=[N:11][C:12]([N:19]=[C:20]=S)=[C:13]4[N:17]=[CH:16][N:15]([CH3:18])[C:14]4=[C:9]3[CH:8]=2)=[O:6])[CH2:3][CH2:2]1.[N:28]([CH2:31][C:32](=[O:34])[CH3:33])=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCOCC1.C(OCC)(=O)C>[CH:1]1([N:4]([CH:25]2[CH2:27][CH2:26]2)[C:5]([C:7]2[N:22]([CH2:23][CH3:24])[C:10]3=[N:11][C:12]([NH:19][C:20]4[O:34][C:32]([CH3:33])=[CH:31][N:28]=4)=[C:13]4[N:17]=[CH:16][N:15]([CH3:18])[C:14]4=[C:9]3[CH:8]=2)=[O:6])[CH2:3][CH2:2]1

Participants

6

Reactant 3

HCID 11776TriphenylphosphineHCID 11636791HCID 11636791, compoundHCID 58180531Imidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxamide, N,N-dicyclopropyl-6-ethyl-1,6-dihydro-4-isothiocyanato-1-methyl-

Product 1

HCID 50991565HCID 50991565, compoundYield 25%

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

To a solution of N,N-dicyclopropyl-6-ethyl-4-isothiocyanato-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxamide (example 121B, 45.7 mg, 0.120 mmol) in dioxane (343 μL) was added 1-azidopropan-2-one (14.28 mg, 0.144 mmol) and triphenylphosphine (37.8 mg, 0.144 mmol). The contents of the flask were immersed into a preheated oil bath for 35 min and cooled to room temperature. The residue was diluted with ethyl acetate and quenched with saturated aqueous sodium bicarbonate. The aqueous layer was extracted with ethyl acetate. The combined organics were washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The crude residue was purified by flash chromatography on an Isco 12 g column eluting with 1-10% MeOH/CH2Cl2. The pale yellow solid was taken up in MeOH and further purified by preparative HPLC. N,N-Dicyclopropyl-6-ethyl-1-methyl-4-(5-methyloxazol-2-ylamino)-1,6-dihydro imidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxamide was isolated (10 mg, 25% yield) as a white solid.

Workup

  1. customquenched with saturated aqueous sodium bicarbonate
  2. extractionThe aqueous layer was extracted with ethyl acetate
  3. washThe combined organics were washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude residue was purified by flash chromatography on an Isco 12 g column
  8. washeluting with 1-10% MeOH/CH2Cl2
  9. customfurther purified by preparative HPLC

Sources & evidence

ORD record
ord-7380872267db4540a9e77da87938bb1b
Source dataset
uspto-grants-2012_06
Patent number
US08202881B2

Reaction notes

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